| Portsmouth Rhode Island Weather Almanac |
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| Tuesday,
August 17, 2021 |
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| Partly
Cloudy, Light Winds and Cooler |
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| Climate Normal
Period |
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Climate Record Period |
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| 1991- 2020 |
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1893 - 2021 |
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August 17, 2021 |
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Record |
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Record |
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| Observed Daily Data |
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2021 |
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2020 |
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Norm |
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Depart |
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Highest |
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Lowest |
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| Maximum Temperature |
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79 |
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79 |
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78 |
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+1 |
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91 |
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in |
2002 |
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65 |
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in |
1909 |
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| Minimum
Temperature |
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64 |
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62 |
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64 |
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+0 |
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74 |
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in |
1955 |
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52 |
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in |
1981 |
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| Average Temperature |
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72 |
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71 |
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71 |
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+1 |
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81 |
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in |
2002 |
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61 |
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in |
1909 |
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| Month Avg Max Temperature |
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80.8 |
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83.5 |
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79.2 |
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+1.6 |
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85.5 |
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in |
1944 |
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72.1 |
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in |
1964 |
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| Month Avg
Min Temperature |
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65.5 |
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68.4 |
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64.5 |
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+1.0 |
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71.6 |
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in |
1988 |
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55.7 |
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in |
1964 |
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| Month Average Temperature |
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73.5 |
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76.2 |
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71.8 |
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+1.6 |
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78.4 |
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in |
1988 |
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64.2 |
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in |
1964 |
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| HDD |
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0 |
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0 |
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0 |
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+0 |
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4 |
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in |
1909 |
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0 |
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in |
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| Month HDD |
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0 |
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0 |
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0 |
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+0 |
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24 |
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in |
1964 |
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0 |
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in |
2021 |
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| Season HDD |
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9 |
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0 |
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3 |
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+6 |
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34 |
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in |
1914 |
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0 |
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in |
2020 |
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| CDD |
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7 |
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6 |
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7 |
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+0 |
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16 |
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in |
2002 |
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0 |
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in |
2000 |
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| Month CDD |
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144 |
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190 |
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126 |
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+18 |
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227 |
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in |
1988 |
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11 |
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in |
1964 |
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| Year CDD |
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534 |
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654 |
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454 |
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+80 |
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654 |
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in |
2020 |
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208 |
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in |
1902 |
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| Maximum Dew Point |
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68 |
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65 |
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68 |
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+0 |
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76 |
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in |
2010 |
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51 |
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in |
1981 |
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| Minimum
Dew Point |
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61 |
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60 |
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59 |
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+2 |
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72 |
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in |
1955 |
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43 |
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in |
1961 |
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| Average Dew Point |
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65 |
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63 |
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64 |
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+1 |
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74 |
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in |
1955 |
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49 |
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in |
1981 |
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| Month Avg Max Dew Point |
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70.8 |
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72.1 |
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68.7 |
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+2.1 |
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74.1 |
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in |
2018 |
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57.5 |
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in |
1964 |
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| Month Avg
Min Dew Point |
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62.4 |
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64.3 |
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60.7 |
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+1.6 |
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67.9 |
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in |
2018 |
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46.9 |
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in |
1964 |
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| Month Average Dew Point |
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66.6 |
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68.2 |
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64.6 |
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+1.9 |
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71.0 |
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in |
2018 |
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52.2 |
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in |
1964 |
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| Precipitation |
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.00 |
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.02 |
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.12 |
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-.12 |
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1.65 |
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in |
1909 |
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| One Hour |
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.00 |
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.02 |
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.90 |
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in |
1997 |
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| Hourly Rate |
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.00 |
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.00 |
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2.35 |
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in |
2010 |
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| Month Precipitation |
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4.02 |
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.80 |
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2.03 |
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+1.99 |
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7.57 |
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in |
1946 |
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.07 |
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in |
1940 |
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| Year Precipitation |
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26.85 |
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23.18 |
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27.68 |
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-.83 |
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43.87 |
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in |
1983 |
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15.70 |
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in |
1957 |
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| Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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| Snow Depth |
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#N/A |
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#N/A |
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#N/A |
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in |
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| Month Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
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| Season Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
#N/A |
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August
17, 2021 |
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|
Record |
Record |
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| Observed Daily Data |
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2021 |
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2020 |
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Norm |
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Depart |
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Highest |
Lowest |
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| Maximum Humidity |
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96% |
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94% |
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93% |
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+3% |
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100% |
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in |
2003 |
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77% |
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in |
1980 |
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| Minimum
Humidity |
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64% |
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57% |
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60% |
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+4% |
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95% |
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in |
1998 |
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30% |
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in |
2007 |
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| Average Humidity |
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80% |
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76% |
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76% |
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+4% |
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98% |
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in |
1998 |
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55% |
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in |
1980 |
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| Maximum Barometer |
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30.24 |
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29.90 |
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30.04 |
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+00.20 |
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30.37 |
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in |
1947 |
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29.71 |
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in |
1952 |
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| Minimum
Barometer |
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30.19 |
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29.84 |
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29.86 |
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+00.33 |
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30.20 |
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in |
1994 |
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29.44 |
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in |
1977 |
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| Average Barometer |
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30.22 |
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29.87 |
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29.95 |
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+00.27 |
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30.25 |
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in |
1994 |
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29.65 |
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in |
1958 |
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| Average Wind |
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4.1 |
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6.2 |
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5.8 |
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-1.7 |
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12.8 |
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in |
1969 |
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1.7 |
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in |
1964 |
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| Direction |
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SW |
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NNE |
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SSW |
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WSW |
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SSE |
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| High Wind Gust |
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18 |
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25 |
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20 |
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-2 |
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35 |
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in |
1981 |
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10 |
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in |
2004 |
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| Direction |
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S |
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NNE |
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SSW |
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NNW |
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SSE |
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| High Heat
Index |
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81 |
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79 |
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81 |
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+0 |
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98 |
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in |
2002 |
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| Low Wind Chill |
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#N/A |
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in |
#N/A |
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| Maximum Water Temp |
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75.2 |
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66.8 |
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72.0 |
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+3.2 |
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75.5 |
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in |
2016 |
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66.8 |
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in |
2020 |
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| Minimum
Water Temp |
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72.1 |
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64.9 |
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68.9 |
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+3.2 |
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73.6 |
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in |
2018 |
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64.9 |
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in |
2020 |
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| Average Water Temp |
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73.7 |
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65.9 |
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70.5 |
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+3.2 |
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74.4 |
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in |
2018 |
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65.9 |
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in |
2020 |
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| Sunrise/ AM Twilight |
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5:57:19 AM |
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5:27:53 AM |
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| Sunset /
PM Twilight |
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7:40:51 PM |
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8:10:16 PM |
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| Length Of Day |
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13:43:32 |
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| Special Conditions |
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Fog |
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| Comments |
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| Hour-by-Hour Weather For August 17, 2021 |
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| Climate Weather for August 17 |
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| Weather History For August 17 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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