| Portsmouth Rhode Island
Weather Almanac |
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| Saturday, September 12, 2020 |
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| Clear and Cooler |
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| Climate
Normal Period |
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Climate Record Period |
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| 1981- 2010 |
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1893 - 2020 |
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September
12, 2020 |
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Record |
Record |
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| Observed Daily Data |
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Observed |
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2019 |
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Normal |
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Depart |
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Highest |
Lowest |
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| Maximum Temperature |
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73 |
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69 |
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73 |
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+0 |
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87 |
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in |
1961 |
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60 |
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in |
1950 |
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| Minimum
Temperature |
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52 |
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55 |
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58 |
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-6 |
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71 |
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in |
1947 |
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45 |
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in |
1985 |
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| Average Temperature |
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63 |
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62 |
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65 |
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-2 |
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79 |
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in |
1961 |
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54 |
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in |
1967 |
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| Precipitation |
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.00 |
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.48 |
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.13 |
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-.13 |
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1.19 |
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in |
1960 |
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| One Hour |
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.00 |
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.33 |
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.34 |
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in |
1960 |
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| Snow |
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#N/A |
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0.0 |
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0.0 |
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#N/A |
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0.0 |
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in |
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| Snow Depth |
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#N/A |
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0 |
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0 |
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in |
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| HDD |
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2 |
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3 |
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2 |
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+0 |
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11 |
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in |
1967 |
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0 |
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in |
2018 |
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| CDD |
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0 |
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0 |
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2 |
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-2 |
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14 |
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in |
1961 |
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0 |
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in |
2020 |
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| Maximum Dew Point |
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55 |
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68 |
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61 |
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-6 |
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73 |
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in |
2018 |
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45 |
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in |
1985 |
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| Minimum
Dew Point |
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49 |
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52 |
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52 |
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-3 |
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69 |
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in |
1961 |
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34 |
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in |
2004 |
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| Average Dew Point |
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52 |
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60 |
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56 |
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-4 |
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70 |
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in |
1971 |
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42 |
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in |
1985 |
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| Maximum Humidity |
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95% |
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96% |
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90% |
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+5% |
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100% |
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in |
2018 |
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74% |
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in |
2002 |
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| Minimum
Humidity |
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45% |
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80% |
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56% |
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-11% |
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94% |
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in |
2018 |
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23% |
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in |
2004 |
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| Average Humidity |
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70% |
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88% |
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73% |
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-3% |
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97% |
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in |
2018 |
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55% |
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in |
2002 |
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| Maximum Barometer |
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30.35 |
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30.30 |
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30.13 |
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+00.22 |
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30.52 |
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in |
1966 |
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29.77 |
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in |
1968 |
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| Minimum
Barometer |
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30.27 |
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30.00 |
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29.89 |
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+00.38 |
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30.30 |
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in |
2003 |
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28.66 |
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in |
1960 |
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| Average Barometer |
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30.31 |
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30.15 |
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30.01 |
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+00.30 |
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30.34 |
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in |
2012 |
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29.29 |
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in |
1960 |
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| Average Wind |
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4.5 |
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9.0 |
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6.4 |
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-1.9 |
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22.8 |
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in |
1960 |
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1.9 |
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in |
1990 |
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| Direction |
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ENE |
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NNE |
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SSW |
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SSE |
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SSE |
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| High Wind Gust |
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20 |
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26 |
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22 |
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-2 |
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81 |
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in |
1960 |
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11 |
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in |
1990 |
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| Direction |
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NE |
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NNE |
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SSW |
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SSE |
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SSW |
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| High
Heat Index |
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72 |
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72 |
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74 |
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-2 |
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92 |
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in |
1952 |
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| 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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69.8 |
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69.6 |
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69.1 |
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+0.7 |
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72.3 |
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in |
2005 |
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65.1 |
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in |
2006 |
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| Minimum
Water Temp |
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67.8 |
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68.5 |
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67.1 |
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+0.7 |
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70.0 |
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in |
1999 |
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63.3 |
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in |
2006 |
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| Average Water Temp |
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68.8 |
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69.1 |
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68.1 |
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+0.7 |
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70.6 |
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in |
1999 |
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64.2 |
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in |
2006 |
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| Sunrise/ AM Twilight |
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6:23:54 AM |
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5:56:07 AM |
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| Sunset
/ PM Twilight |
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6:58:11 PM |
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7:25:58 PM |
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| Length Of Day |
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12:34:17 |
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| Special Conditions |
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None |
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| Comments |
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September
12, 2020 |
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|
Record |
Record |
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| Month-to-Date Summary |
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Observed |
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2019 |
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Normal |
Depart |
Highest |
Lowest |
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| Avg Maximum Temperature |
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78.2 |
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74.9 |
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74.4 |
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+3.8 |
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85.2 |
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in |
1983 |
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68.4 |
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in |
1917 |
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| Avg
Minimum Temperature |
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62.5 |
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58.9 |
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59.3 |
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+3.2 |
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66.8 |
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in |
1961 |
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51.2 |
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in |
1893 |
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| Average Temperature |
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70.6 |
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67.1 |
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66.9 |
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+3.7 |
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75.3 |
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in |
1961 |
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61.9 |
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in |
1994 |
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| Total
Precipitation |
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.66 |
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.56 |
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1.56 |
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-.90 |
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5.17 |
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in |
1905 |
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T |
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in |
2005 |
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| Total 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 |
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0.0 |
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in |
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| Total
HDD |
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2 |
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8 |
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15 |
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-13 |
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46 |
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in |
1917 |
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0 |
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in |
2015 |
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| Total CDD |
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69 |
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33 |
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40 |
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+29 |
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124 |
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in |
1961 |
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0 |
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in |
1893 |
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| Avg Maximum Dew Point |
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67.7 |
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65.1 |
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62.4 |
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+5.3 |
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70.4 |
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in |
1961 |
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55.8 |
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in |
1984 |
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| Avg
Minimum Dew Point |
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57.8 |
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55.3 |
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53.4 |
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+4.4 |
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63.8 |
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in |
1961 |
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43.9 |
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in |
1967 |
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| Average Dew Point |
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62.9 |
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60.4 |
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57.9 |
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+5.0 |
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67.1 |
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in |
1961 |
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50.0 |
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in |
1967 |
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September 12, 2020 |
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Record |
Record |
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| Year-to-Date Summary |
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Observed |
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2019 |
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Normal |
Depart |
Highest |
Lowest |
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| Total Precipitation |
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24.69 |
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38.39 |
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33.18 |
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-8.49 |
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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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| Total
Snow (since Jul 1 20) |
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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 |
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0.0 |
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in |
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| Total HDD (since Jul 1
20) |
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2 |
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8 |
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24 |
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-22 |
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46 |
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in |
1917 |
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0 |
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in |
2015 |
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| Total
CDD (since Jan 1) |
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835 |
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691 |
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538 |
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+297 |
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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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| Hour-by-Hour Weather For September 12, 2020 |
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| Climate Weather for September 12 |
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| Weather History For September 12 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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