| Portsmouth Rhode Island Weather Almanac |
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| Saturday,
September 11, 2021 |
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| Clear and
Very Pleasant, Breezy Afternoon |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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September 11, 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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75 |
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73 |
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73 |
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+2 |
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90 |
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in |
1983 |
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61 |
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in |
1918 |
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| Minimum
Temperature |
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53 |
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56 |
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59 |
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-6 |
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71 |
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in |
1931 |
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42 |
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in |
1980 |
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| Average Temperature |
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64 |
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65 |
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66 |
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-2 |
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81 |
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in |
1931 |
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54 |
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in |
1917 |
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| Month Avg Max Temperature |
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75.6 |
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78.6 |
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75.0 |
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+0.6 |
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85.2 |
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in |
1983 |
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68.5 |
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in |
1917 |
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| Month Avg
Min Temperature |
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60.7 |
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63.5 |
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60.1 |
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+0.6 |
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67.1 |
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in |
1959 |
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51.4 |
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in |
1893 |
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| Month Average Temperature |
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68.5 |
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71.3 |
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67.5 |
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+0.9 |
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75.1 |
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in |
1983 |
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61.9 |
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in |
1994 |
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| High Heat
Index |
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74 |
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76 |
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75 |
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-1 |
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98 |
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in |
1989 |
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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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1 |
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0 |
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1 |
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+0 |
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11 |
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in |
1917 |
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0 |
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in |
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| Month HDD |
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1 |
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0 |
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11 |
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-10 |
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41 |
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in |
1994 |
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0 |
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in |
2020 |
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| Season HDD |
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10 |
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0 |
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18 |
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-8 |
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73 |
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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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0 |
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0 |
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3 |
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-3 |
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16 |
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in |
1931 |
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0 |
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in |
2021 |
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| Month CDD |
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39 |
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69 |
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39 |
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+0 |
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111 |
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in |
1983 |
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0 |
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in |
1893 |
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| Year CDD |
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722 |
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835 |
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576 |
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+146 |
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835 |
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in |
2020 |
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279 |
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in |
1902 |
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| Maximum Dew Point |
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62 |
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72 |
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64 |
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-2 |
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76 |
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in |
2013 |
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41 |
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in |
1967 |
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| Minimum
Dew Point |
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50 |
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53 |
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54 |
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-4 |
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66 |
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in |
2013 |
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34 |
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in |
1995 |
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| Average Dew Point |
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56 |
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63 |
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59 |
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-3 |
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71 |
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in |
2013 |
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39 |
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in |
1967 |
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| Month Avg Max Dew Point |
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66.0 |
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68.8 |
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64.8 |
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+1.2 |
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70.4 |
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in |
1961 |
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55.4 |
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in |
1984 |
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| Month Avg
Min Dew Point |
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56.8 |
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58.6 |
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55.6 |
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+1.2 |
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63.3 |
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in |
1961 |
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44.2 |
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in |
1967 |
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| Month Average Dew Point |
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61.6 |
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63.9 |
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60.2 |
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+1.5 |
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66.8 |
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in |
1961 |
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50.3 |
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in |
1984 |
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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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4.37 |
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in |
1954 |
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| One Hour |
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.00 |
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.00 |
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.91 |
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in |
1954 |
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| Hourly Rate |
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.00 |
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.00 |
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2.59 |
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in |
2009 |
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| Month Precipitation |
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7.60 |
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.66 |
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1.26 |
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+6.34 |
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7.60 |
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in |
2021 |
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.00 |
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in |
1983 |
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| Year Precipitation |
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36.70 |
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24.69 |
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30.54 |
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+6.16 |
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46.33 |
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in |
1998 |
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17.36 |
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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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September
11, 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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92% |
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97% |
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91% |
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+1% |
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100% |
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in |
2018 |
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74% |
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in |
1988 |
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| Minimum
Humidity |
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52% |
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72% |
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56% |
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-4% |
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93% |
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in |
2007 |
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26% |
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in |
1980 |
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| Average Humidity |
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72% |
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85% |
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74% |
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-2% |
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97% |
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in |
1950 |
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50% |
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in |
1980 |
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| Maximum Barometer |
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30.18 |
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30.28 |
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30.11 |
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+00.07 |
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30.44 |
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in |
1967 |
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29.64 |
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in |
2002 |
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| Minimum
Barometer |
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30.02 |
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30.05 |
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29.87 |
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+00.15 |
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30.32 |
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in |
2008 |
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28.66 |
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in |
1954 |
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| Average Barometer |
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30.10 |
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30.17 |
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29.99 |
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+00.11 |
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30.36 |
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in |
2008 |
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29.22 |
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in |
1954 |
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| Average Wind |
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5.9 |
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6.7 |
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7.1 |
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-1.2 |
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22.2 |
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in |
1954 |
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1.9 |
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in |
1989 |
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| Direction |
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NW |
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NE |
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NW |
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NNE |
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NE |
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| High Wind Gust |
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25 |
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23 |
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23 |
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+2 |
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98 |
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in |
1954 |
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11 |
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in |
2017 |
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| Direction |
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WSW |
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NNE |
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NW |
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NW |
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WNW |
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| Maximum Water Temp |
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70.3 |
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71.2 |
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69.2 |
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+1.1 |
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71.8 |
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in |
2016 |
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65.9 |
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in |
2017 |
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| Minimum
Water Temp |
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68.7 |
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68.9 |
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67.0 |
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+1.7 |
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70.0 |
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in |
2016 |
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64.2 |
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in |
2017 |
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| Average Water Temp |
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69.5 |
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70.1 |
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68.1 |
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+1.4 |
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70.9 |
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in |
2016 |
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65.1 |
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in |
2017 |
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| Sunrise/ AM Twilight |
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6:20:38 AM |
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5:54:07 AM |
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| Sunset /
PM Twilight |
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7:02:49 PM |
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7:29:19 PM |
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| Length Of Day |
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12:42:11 |
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| Special Conditions |
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None |
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| Comments |
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| Hour-by-Hour Weather For September 11, 2021 |
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| Climate Weather for September 11 |
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| Weather History For September 11 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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