| Portsmouth Rhode Island
Weather Almanac |
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| Friday, September 11, 2020 |
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| Mostly Cloudy early, Cloudy Day to Clear PM, Seasonal
Temperatures |
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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
11, 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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79 |
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73 |
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+0 |
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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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56 |
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66 |
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58 |
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-2 |
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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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65 |
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73 |
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65 |
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+0 |
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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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| Precipitation |
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.00 |
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.00 |
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.13 |
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-.13 |
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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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| 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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0 |
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0 |
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2 |
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-2 |
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11 |
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in |
1917 |
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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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8 |
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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 |
2020 |
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| Maximum Dew Point |
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72 |
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70 |
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61 |
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+11 |
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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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53 |
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63 |
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52 |
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+1 |
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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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63 |
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67 |
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57 |
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+6 |
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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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| Maximum Humidity |
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97% |
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95% |
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91% |
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+6% |
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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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72% |
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73% |
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56% |
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+16% |
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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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85% |
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84% |
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74% |
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+11% |
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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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30.28 |
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30.26 |
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30.11 |
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+00.17 |
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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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30.05 |
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30.03 |
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29.86 |
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+00.19 |
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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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30.17 |
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30.15 |
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29.98 |
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+00.18 |
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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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6.7 |
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8.8 |
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7.1 |
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-0.4 |
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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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NE |
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SSW |
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SSW |
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NNE |
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NE |
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| High Wind Gust |
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23 |
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24 |
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23 |
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-0 |
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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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NNE |
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SSW |
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NW |
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NW |
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WNW |
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| High Heat
Index |
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76 |
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82 |
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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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| 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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71.2 |
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69.7 |
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69.2 |
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+2.0 |
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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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68.9 |
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68.6 |
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66.9 |
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+2.0 |
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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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70.1 |
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69.2 |
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68.1 |
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+2.0 |
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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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6:22:53 AM |
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5:55:05 AM |
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| Sunset /
PM Twilight |
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6:59:54 PM |
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7:27:43 PM |
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| Length Of Day |
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12:37:01 |
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| Special Conditions |
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None |
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| Comments |
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September
11, 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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78.6 |
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75.5 |
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74.5 |
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+4.1 |
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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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| Avg
Minimum Temperature |
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63.5 |
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59.3 |
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59.5 |
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+4.0 |
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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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| Average Temperature |
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71.3 |
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67.5 |
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67.0 |
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+4.3 |
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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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| Total
Precipitation |
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.66 |
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.08 |
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1.43 |
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-.77 |
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4.86 |
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in |
1924 |
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.00 |
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in |
1983 |
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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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0 |
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5 |
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13 |
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-13 |
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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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| Total CDD |
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69 |
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33 |
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38 |
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+31 |
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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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| Avg Maximum Dew Point |
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68.8 |
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64.8 |
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62.5 |
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+6.3 |
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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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| Avg
Minimum Dew Point |
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58.6 |
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55.5 |
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53.6 |
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+5.1 |
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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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| Average Dew Point |
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63.9 |
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60.5 |
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58.1 |
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+5.9 |
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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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September 11, 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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37.91 |
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33.05 |
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-8.36 |
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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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0 |
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5 |
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22 |
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-22 |
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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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| Total CDD
(since Jan 1) |
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835 |
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691 |
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536 |
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+299 |
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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 11, 2020 |
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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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