| Portsmouth Rhode Island
Weather Almanac |
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| Tuesday, September 29, 2020 |
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| Cloudy & Dense Fog early, Mostly Cloudy Day to Cloudy PM,
Continued Warm and Muggy |
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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
29, 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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74 |
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76 |
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68 |
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+6 |
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80 |
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in |
1952 |
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55 |
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in |
1936 |
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| Minimum
Temperature |
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64 |
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55 |
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52 |
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+12 |
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66 |
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in |
2015 |
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35 |
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in |
1957 |
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| Average Temperature |
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69 |
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66 |
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60 |
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+9 |
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73 |
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in |
1959 |
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46 |
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in |
1914 |
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| Precipitation |
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T |
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.00 |
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.13 |
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.00 |
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2.82 |
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in |
2004 |
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| One Hour |
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T |
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.00 |
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.58 |
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in |
1974 |
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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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6 |
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-6 |
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19 |
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in |
1914 |
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0 |
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in |
2020 |
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| CDD |
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4 |
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1 |
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1 |
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+3 |
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8 |
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in |
1959 |
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0 |
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in |
2018 |
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| Maximum Dew Point |
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70 |
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67 |
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57 |
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+13 |
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71 |
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in |
2015 |
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33 |
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in |
1981 |
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| Minimum
Dew Point |
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63 |
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49 |
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47 |
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+16 |
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66 |
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in |
1959 |
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26 |
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in |
1981 |
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| Average Dew Point |
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67 |
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58 |
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52 |
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+15 |
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68 |
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in |
2015 |
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30 |
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in |
1981 |
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| Maximum Humidity |
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98% |
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94% |
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92% |
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+6% |
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100% |
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in |
2006 |
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68% |
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in |
1981 |
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| Minimum
Humidity |
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82% |
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56% |
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59% |
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+23% |
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92% |
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in |
2011 |
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29% |
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in |
1957 |
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| Average Humidity |
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90% |
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75% |
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75% |
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+15% |
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95% |
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in |
2012 |
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49% |
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in |
1957 |
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| Maximum Barometer |
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29.97 |
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30.32 |
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30.13 |
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-00.16 |
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30.57 |
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in |
1988 |
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29.61 |
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in |
1966 |
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| Minimum
Barometer |
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29.77 |
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30.07 |
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29.88 |
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-00.11 |
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30.30 |
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in |
2000 |
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29.18 |
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in |
1963 |
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| Average Barometer |
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29.87 |
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30.20 |
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30.01 |
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-00.14 |
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30.39 |
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in |
1988 |
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29.49 |
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in |
1997 |
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| Average Wind |
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6.4 |
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7.0 |
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6.6 |
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-0.2 |
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16.5 |
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in |
2001 |
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3.0 |
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in |
1965 |
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| Direction |
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S |
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N |
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N |
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NNE |
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NNW |
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| High Wind Gust |
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22 |
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24 |
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23 |
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-1 |
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38 |
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in |
1989 |
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13 |
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in |
2018 |
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| Direction |
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SSE |
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N |
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NNE |
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SW |
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NW |
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| High
Heat Index |
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75 |
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76 |
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68 |
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+7 |
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82 |
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in |
1959 |
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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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67.4 |
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66.0 |
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+1.3 |
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68.9 |
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in |
2015 |
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63.0 |
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in |
2010 |
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| Minimum
Water Temp |
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66.2 |
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66.1 |
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64.5 |
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+1.7 |
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67.5 |
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in |
2003 |
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60.0 |
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in |
2004 |
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| Average Water Temp |
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66.8 |
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66.8 |
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65.3 |
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+1.5 |
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68.1 |
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in |
2003 |
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61.7 |
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in |
2000 |
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| Sunrise/ AM Twilight |
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6:41:20 AM |
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6:13:49 AM |
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| Sunset
/ PM Twilight |
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6:28:54 PM |
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6:56:24 PM |
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| Length Of Day |
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11:47:34 |
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| Special Conditions |
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Dense Fog |
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| Comments |
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September
29, 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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74.6 |
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74.8 |
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71.9 |
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+2.6 |
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78.2 |
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in |
1961 |
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67.7 |
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in |
1963 |
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| Avg
Minimum Temperature |
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57.8 |
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56.8 |
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56.6 |
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+1.2 |
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62.8 |
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in |
1961 |
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52.0 |
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in |
1956 |
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| Average Temperature |
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66.4 |
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66.0 |
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64.3 |
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+2.2 |
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70.7 |
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in |
1961 |
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60.3 |
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in |
1963 |
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| Total
Precipitation |
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.93 |
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1.57 |
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3.77 |
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-2.84 |
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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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35 |
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74 |
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-18 |
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172 |
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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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98 |
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65 |
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59 |
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+39 |
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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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62.4 |
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63.3 |
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60.2 |
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+2.2 |
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67.2 |
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in |
2018 |
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54.8 |
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in |
1966 |
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| Avg
Minimum Dew Point |
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51.4 |
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52.8 |
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51.1 |
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+0.3 |
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57.9 |
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in |
2018 |
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44.2 |
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in |
1984 |
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| Average Dew Point |
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57.1 |
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58.3 |
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55.7 |
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+1.5 |
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62.9 |
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in |
2018 |
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49.6 |
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in |
1984 |
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September 29, 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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24.96 |
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39.40 |
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35.39 |
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-10.43 |
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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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35 |
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83 |
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-27 |
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172 |
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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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864 |
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723 |
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557 |
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+307 |
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864 |
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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 29, 2020 |
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| Climate Weather for September 29 |
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| Weather History For September 29 |
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| Weather Calendar |
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