| Portsmouth Rhode Island Weather Almanac |
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| Saturday,
August 21, 2021 |
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| Mostly
Cloudy & Fog early, Partly Cloudy Day to Mostly Pm, Light Winds,
Continued Warm and Muggy |
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Climate Normal Period |
Climate
Record Period |
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1991 - 2020 |
1893 -
2021 |
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August 21, 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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84 |
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80 |
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78 |
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+6 |
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92 |
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in |
1955 |
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64 |
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in |
1956 |
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| Minimum
Temperature |
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70 |
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63 |
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63 |
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+7 |
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74 |
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in |
2009 |
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50 |
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in |
1913 |
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| Average Temperature |
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77 |
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72 |
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71 |
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+6 |
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82 |
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in |
1955 |
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60 |
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in |
1956 |
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| Month Avg Max Temperature |
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81.0 |
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83.0 |
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79.0 |
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+2.0 |
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84.6 |
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in |
1937 |
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72.6 |
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in |
1964 |
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| Month Avg Min Temperature |
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66.4 |
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67.3 |
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64.3 |
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+2.1 |
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69.5 |
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in |
2018 |
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55.9 |
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in |
1964 |
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| Month Average
Temperature |
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74.0 |
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75.3 |
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71.7 |
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+2.3 |
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76.9 |
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in |
1937 |
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64.6 |
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in |
1964 |
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| High
Heat Index |
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91 |
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83 |
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79 |
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+12 |
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100 |
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in |
1955 |
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| Low Wind Chill |
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#N/A |
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in |
#N/A |
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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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5 |
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in |
1956 |
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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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26 |
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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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12 |
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7 |
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6 |
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+6 |
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17 |
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in |
1955 |
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0 |
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in |
2007 |
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| Month CDD |
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188 |
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217 |
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151 |
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+37 |
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250 |
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in |
1937 |
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17 |
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in |
1964 |
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| Year CDD |
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578 |
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681 |
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479 |
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+99 |
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681 |
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in |
2020 |
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210 |
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in |
1902 |
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| Maximum Dew Point |
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76 |
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69 |
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68 |
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+8 |
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77 |
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in |
2009 |
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46 |
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in |
1969 |
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| Minimum
Dew Point |
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69 |
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61 |
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59 |
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+10 |
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73 |
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in |
2009 |
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38 |
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in |
1982 |
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| Average Dew Point |
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73 |
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65 |
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63 |
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+10 |
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75 |
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in |
2009 |
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43 |
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in |
1969 |
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| Month Avg Max Dew Point |
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71.5 |
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71.0 |
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68.6 |
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+3.0 |
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73.1 |
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in |
2018 |
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57.9 |
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in |
1964 |
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| Month Avg
Min Dew Point |
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63.4 |
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63.2 |
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60.4 |
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+3.0 |
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66.9 |
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in |
2018 |
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47.4 |
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in |
1964 |
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| Month Average Dew Point |
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67.5 |
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67.1 |
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64.4 |
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+3.0 |
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70.0 |
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in |
2018 |
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52.6 |
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in |
1964 |
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| Precipitation |
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.00 |
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.00 |
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.12 |
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-.12 |
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1.97 |
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in |
1997 |
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| One Hour |
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.00 |
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.00 |
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.88 |
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in |
1994 |
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| Hourly Rate |
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.00 |
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.00 |
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2.17 |
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in |
2004 |
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| Month Precipitation |
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4.21 |
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1.06 |
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2.51 |
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+1.70 |
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9.62 |
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in |
1946 |
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.16 |
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in |
1993 |
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| Year Precipitation |
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27.04 |
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23.44 |
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28.16 |
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-1.12 |
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43.94 |
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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
21, 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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98% |
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93% |
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92% |
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+6% |
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100% |
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in |
2004 |
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58% |
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in |
1983 |
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| Minimum
Humidity |
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73% |
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65% |
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59% |
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+14% |
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95% |
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in |
1961 |
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29% |
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in |
1987 |
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| Average Humidity |
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86% |
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79% |
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76% |
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+10% |
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98% |
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in |
1961 |
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48% |
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in |
1983 |
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| Maximum Barometer |
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29.97 |
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30.01 |
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30.08 |
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-00.11 |
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30.40 |
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in |
1926 |
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29.82 |
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in |
1955 |
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| Minimum
Barometer |
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29.90 |
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29.87 |
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29.88 |
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+00.02 |
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30.21 |
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in |
2000 |
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29.54 |
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in |
1988 |
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| Average Barometer |
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29.94 |
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29.94 |
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29.98 |
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-00.05 |
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30.27 |
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in |
1974 |
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29.72 |
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in |
1971 |
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| Average Wind |
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4.3 |
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7.0 |
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5.6 |
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-1.3 |
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14.0 |
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in |
1980 |
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1.6 |
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in |
1965 |
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| Direction |
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S |
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SW |
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SSW |
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NE |
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SE |
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| High Wind Gust |
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15 |
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31 |
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20 |
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-5 |
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46 |
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in |
1997 |
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10 |
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in |
1998 |
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| Direction |
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S |
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SW |
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S |
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ESE |
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W |
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| Maximum Water Temp |
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74.7 |
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66.4 |
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71.3 |
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+3.4 |
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78.1 |
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in |
2003 |
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66.4 |
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in |
2020 |
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| Minimum
Water Temp |
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71.2 |
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64.2 |
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68.5 |
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+2.7 |
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72.7 |
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in |
2011 |
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64.1 |
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in |
2008 |
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| Average Water Temp |
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73.0 |
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65.3 |
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69.9 |
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+3.0 |
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73.8 |
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in |
2011 |
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65.3 |
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in |
2020 |
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| Sunrise/ AM Twilight |
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6:01:24 AM |
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5:32:18 AM |
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| Sunset /
PM Twilight |
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7:34:50 PM |
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8:03:56 PM |
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| Length Of Day |
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13:33:26 |
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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 21, 2021 |
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| Climate Weather for August 21 |
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| Weather History For August 21 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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