| Portsmouth Rhode Island
Weather Almanac |
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| Wednesday, September 30, 2020 |
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| Cloudy, Rain and Fog AM, Partly Cloudy Day to Clear PM,
Continued Warm and Very Windy |
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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
30, 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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67 |
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68 |
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+5 |
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81 |
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in |
1922 |
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51 |
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in |
1992 |
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| Minimum
Temperature |
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62 |
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53 |
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52 |
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+10 |
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66 |
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in |
2010 |
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35 |
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in |
1951 |
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| Average Temperature |
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68 |
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60 |
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60 |
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+8 |
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72 |
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in |
1959 |
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45 |
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in |
1992 |
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| Precipitation |
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.30 |
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.00 |
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.12 |
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+.18 |
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1.84 |
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in |
2015 |
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| One Hour |
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.20 |
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.00 |
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.84 |
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in |
2015 |
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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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5 |
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6 |
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-6 |
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20 |
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in |
1992 |
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0 |
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in |
2020 |
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| CDD |
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3 |
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0 |
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1 |
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+2 |
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7 |
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in |
1959 |
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0 |
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in |
2019 |
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| Maximum Dew Point |
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70 |
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52 |
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57 |
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+14 |
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72 |
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in |
2015 |
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31 |
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in |
1981 |
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| Minimum
Dew Point |
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53 |
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45 |
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47 |
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+6 |
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65 |
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in |
2010 |
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20 |
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in |
1981 |
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| Average Dew Point |
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62 |
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49 |
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52 |
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+10 |
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68 |
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in |
2010 |
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26 |
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in |
1981 |
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| Maximum Humidity |
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97% |
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87% |
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93% |
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+4% |
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100% |
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in |
2010 |
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67% |
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in |
1981 |
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| Minimum
Humidity |
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55% |
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52% |
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58% |
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-3% |
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93% |
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in |
2014 |
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25% |
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in |
1981 |
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| Average Humidity |
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76% |
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70% |
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75% |
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+1% |
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95% |
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in |
2014 |
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46% |
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in |
1981 |
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| Maximum Barometer |
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29.89 |
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30.37 |
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30.13 |
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-00.24 |
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30.59 |
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in |
1945 |
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29.53 |
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in |
1997 |
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| Minimum
Barometer |
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29.52 |
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30.25 |
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29.91 |
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-00.39 |
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30.38 |
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in |
2007 |
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29.29 |
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in |
1972 |
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| Average Barometer |
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29.71 |
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30.31 |
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30.02 |
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-00.31 |
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30.46 |
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in |
2007 |
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29.43 |
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in |
1997 |
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| Average Wind |
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13.7 |
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6.5 |
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6.7 |
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+7.0 |
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18.7 |
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in |
2001 |
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2.5 |
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in |
2008 |
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| Direction |
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SW |
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N |
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SW |
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NNE |
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SE |
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| High Wind Gust |
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51 |
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19 |
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22 |
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+29 |
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51 |
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in |
2020 |
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11 |
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in |
1970 |
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| Direction |
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S |
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NNE |
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S |
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S |
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WNW |
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| High
Heat Index |
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74 |
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66 |
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67 |
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+7 |
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81 |
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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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67.3 |
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67.2 |
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65.7 |
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+1.6 |
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68.5 |
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in |
2015 |
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62.0 |
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in |
2010 |
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| Minimum
Water Temp |
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66.4 |
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65.8 |
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64.1 |
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+2.3 |
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67.5 |
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in |
2015 |
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60.3 |
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in |
2001 |
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| Average Water Temp |
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66.9 |
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66.5 |
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64.9 |
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+1.9 |
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68.0 |
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in |
2015 |
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61.3 |
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in |
2001 |
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| Sunrise/ AM Twilight |
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6:42:23 AM |
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6:14:52 AM |
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| Sunset
/ PM Twilight |
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6:27:12 PM |
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6:54:43 PM |
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| Length Of Day |
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11:44:49 |
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| Special Conditions |
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Fog |
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| Comments |
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September
30, 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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74.5 |
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74.6 |
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71.8 |
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+2.7 |
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77.8 |
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in |
1961 |
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67.6 |
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in |
1963 |
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| Avg
Minimum Temperature |
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57.9 |
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56.7 |
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56.4 |
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+1.5 |
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62.2 |
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in |
1961 |
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51.7 |
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in |
1956 |
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| Average Temperature |
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66.5 |
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65.8 |
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64.1 |
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+2.4 |
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70.2 |
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in |
1961 |
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60.2 |
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in |
1963 |
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| Total
Precipitation |
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1.23 |
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1.57 |
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3.87 |
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-2.64 |
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10.67 |
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in |
1961 |
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.31 |
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in |
1959 |
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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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56 |
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40 |
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80 |
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-24 |
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181 |
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in |
1956 |
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12 |
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in |
1921 |
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| Total CDD |
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101 |
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65 |
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60 |
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+41 |
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186 |
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in |
1961 |
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7 |
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in |
1893 |
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| Avg Maximum Dew Point |
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62.7 |
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63.0 |
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60.1 |
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+2.6 |
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66.8 |
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in |
2018 |
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54.6 |
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in |
1984 |
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| Avg
Minimum Dew Point |
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51.4 |
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52.5 |
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51.0 |
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+0.5 |
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57.6 |
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in |
2018 |
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44.1 |
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in |
1984 |
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| Average Dew Point |
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57.3 |
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58.0 |
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55.5 |
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+1.8 |
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62.5 |
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in |
2018 |
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49.4 |
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in |
1984 |
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September 30, 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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25.26 |
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39.40 |
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35.51 |
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-10.25 |
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48.49 |
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in |
1998 |
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17.64 |
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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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56 |
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40 |
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89 |
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-33 |
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181 |
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in |
1956 |
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12 |
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in |
1921 |
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| Total
CDD (since Jan 1 20) |
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867 |
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723 |
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558 |
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+309 |
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867 |
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in |
2020 |
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288 |
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in |
1902 |
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| Hour-by-Hour Weather For September 30, 2020 |
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| Climate Weather for September 30 |
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| Weather History For September 30 |
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| Weather Calendar |
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