| Portsmouth Rhode Island Weather Almanac |
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| Monday,
September 18, 2023 |
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| Cloudy,
Moderate/Heavy Rain and Fog, Cooler |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2023 |
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September 18, 2023 |
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Record |
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Record |
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| Observed Daily Data |
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2023 |
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2022 |
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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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66 |
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78 |
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71 |
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-5 |
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84 |
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in |
1914 |
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58 |
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in |
1996 |
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| Minimum
Temperature |
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63 |
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63 |
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57 |
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+6 |
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68 |
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in |
2016 |
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41 |
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in |
1990 |
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| Average Temperature |
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65 |
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71 |
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64 |
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+1 |
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74 |
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in |
2016 |
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52 |
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in |
1990 |
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| Month Avg Max Temperature |
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79.4 |
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75.4 |
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73.9 |
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+5.4 |
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80.9 |
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in |
1983 |
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68.4 |
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in |
1917 |
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| Month
Avg Min Temperature |
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64.6 |
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59.7 |
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59.1 |
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+5.4 |
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64.6 |
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in |
2023 |
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52.8 |
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in |
1975 |
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| Month Average
Temperature |
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72.2 |
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67.7 |
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66.5 |
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+5.7 |
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72.4 |
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in |
1961 |
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61.4 |
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in |
1963 |
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| High
Heat Index |
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67 |
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80 |
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72 |
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-5 |
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89 |
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in |
1992 |
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| Low Wind
Chill |
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36 |
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in |
1990 |
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| Heating Degree Days |
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0 |
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0 |
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3 |
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-3 |
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13 |
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in |
1990 |
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0 |
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in |
2023 |
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| Month Heating DD |
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5 |
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12 |
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26 |
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-21 |
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85 |
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in |
1913 |
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0 |
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in |
2015 |
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| Season
Heating DD |
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5 |
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12 |
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26 |
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-21 |
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97 |
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in |
1913 |
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0 |
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in |
2015 |
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| Cooling Degree Days |
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0 |
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6 |
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1 |
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-1 |
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9 |
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in |
2016 |
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0 |
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in |
2023 |
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| Month Cooling DD |
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135 |
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61 |
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53 |
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+82 |
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148 |
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in |
1961 |
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7 |
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in |
1975 |
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| Year Cooling DD |
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707 |
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772 |
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590 |
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+117 |
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840 |
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in |
2020 |
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280 |
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in |
1902 |
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| Maximum Dew Point |
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66 |
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70 |
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62 |
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+4 |
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73 |
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in |
2018 |
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41 |
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in |
1990 |
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| Minimum
Dew Point |
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60 |
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59 |
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52 |
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+8 |
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67 |
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in |
2018 |
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32 |
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in |
1959 |
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| Average Dew Point |
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63 |
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65 |
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57 |
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+6 |
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70 |
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in |
2018 |
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37 |
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in |
1990 |
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| Month Avg Max Dew Point |
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70.7 |
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64.9 |
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64.1 |
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+6.6 |
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70.7 |
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in |
2023 |
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55.2 |
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in |
1975 |
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| Month
Avg Min Dew Point |
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62.4 |
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55.5 |
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54.6 |
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+7.8 |
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62.4 |
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in |
2023 |
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44.4 |
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in |
1984 |
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| Month Average Dew Point |
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66.7 |
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60.6 |
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59.3 |
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+7.4 |
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66.7 |
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in |
2023 |
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49.9 |
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in |
1984 |
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| Precipitation |
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1.37 |
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.00 |
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.14 |
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+1.23 |
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2.85 |
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in |
1936 |
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| One Hour
Rain |
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.26 |
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.00 |
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.69 |
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in |
2004 |
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| Half
Hour Rain |
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.26 |
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.00 |
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.43 |
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in |
2018 |
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| Hourly Rain Rate |
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.53 |
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.00 |
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3.49 |
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in |
2018 |
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| Month Precipitation |
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3.85 |
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3.23 |
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2.19 |
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+1.66 |
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8.56 |
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in |
2021 |
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.06 |
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in |
1946 |
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| Year Precipitation |
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39.47 |
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28.65 |
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31.47 |
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+8.00 |
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46.35 |
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in |
1998 |
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17.53 |
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in |
1957 |
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| Snow |
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| Snow Depth |
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| Month Snow |
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| Season Snow |
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0.0 |
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0.0 |
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0.0 |
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+0.0 |
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0.0 |
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in |
1996 |
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0.0 |
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in |
1998 |
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September 18, 2023 |
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|
Record |
Record |
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| Observed Daily Data |
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2023 |
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2022 |
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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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99% |
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97% |
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94% |
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+5% |
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100% |
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in |
2018 |
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78% |
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in |
1968 |
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| Minimum
Humidity |
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87% |
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68% |
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61% |
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+26% |
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96% |
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in |
1993 |
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35% |
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in |
1968 |
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| Average Humidity |
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93% |
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83% |
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78% |
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+15% |
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98% |
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in |
1993 |
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57% |
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in |
1968 |
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| Maximum Barometer |
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29.93 |
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30.17 |
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30.14 |
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-00.21 |
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30.65 |
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in |
1947 |
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29.66 |
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in |
1996 |
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| Minimum
Barometer |
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29.62 |
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29.93 |
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29.92 |
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-00.30 |
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30.39 |
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in |
1985 |
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29.38 |
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in |
1996 |
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| Average Barometer |
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29.78 |
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30.05 |
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30.03 |
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-00.26 |
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30.42 |
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in |
2011 |
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29.52 |
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in |
1996 |
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| Average
Wind |
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7.4 |
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7.5 |
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6.1 |
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+1.3 |
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14.0 |
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in |
2004 |
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1.2 |
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in |
2001 |
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| Direction |
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SE |
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SSW |
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NNE |
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N |
NW |
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| High
Wind Gust |
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29 |
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29 |
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21 |
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+8 |
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38 |
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in |
2004 |
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10 |
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in |
1951 |
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| Direction |
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WNW |
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SSW |
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SSW |
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N |
SW |
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| Maximum Water Temp |
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71.1 |
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70.9 |
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68.2 |
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+2.9 |
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71.2 |
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in |
2015 |
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64.0 |
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in |
1996 |
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| Minimum
Water Temp |
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68.7 |
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69.5 |
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66.1 |
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+2.6 |
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69.6 |
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in |
2018 |
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62.6 |
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in |
2013 |
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| Average Water Temp |
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69.9 |
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70.2 |
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67.2 |
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+2.7 |
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70.3 |
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in |
2018 |
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63.5 |
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in |
1996 |
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| Sunrise/ AM Twilight |
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6:28:10 AM |
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6:01:26 AM |
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| Sunset /
PM Twilight |
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6:49:33 PM |
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7:17:01 PM |
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| Length Of Day |
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12:21:23 |
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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 September 18, 2023 |
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| Climate Weather for September 18 |
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| Weather History For September 18 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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