| Portsmouth Rhode Island
Weather Almanac |
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| Friday, September 4, 2020 |
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| Mostly Cloudy, Light Rain & Fog early then Clear, Hot and
Lower Humidity |
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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
4, 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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87 |
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79 |
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75 |
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+12 |
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89 |
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in |
1937 |
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63 |
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in |
1997 |
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| Minimum
Temperature |
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66 |
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63 |
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60 |
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+6 |
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73 |
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in |
1959 |
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49 |
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in |
1976 |
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| Average Temperature |
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77 |
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71 |
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68 |
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+9 |
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80 |
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in |
2018 |
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58 |
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in |
1997 |
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| Precipitation |
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.08 |
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.00 |
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.13 |
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-.05 |
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2.02 |
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in |
1905 |
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| One Hour |
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.08 |
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.00 |
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.55 |
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in |
1970 |
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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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1 |
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-1 |
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7 |
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in |
1997 |
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0 |
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in |
2020 |
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| CDD |
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12 |
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6 |
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4 |
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+8 |
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15 |
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in |
2018 |
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0 |
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in |
1997 |
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| Maximum Dew Point |
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71 |
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72 |
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63 |
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+8 |
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75 |
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in |
1993 |
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48 |
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in |
1997 |
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| Minimum
Dew Point |
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54 |
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61 |
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54 |
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-0 |
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68 |
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in |
1961 |
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40 |
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in |
1989 |
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| Average Dew Point |
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63 |
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67 |
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59 |
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+4 |
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71 |
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in |
2018 |
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45 |
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in |
1989 |
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| Maximum Humidity |
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96% |
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96% |
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92% |
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+4% |
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100% |
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in |
2003 |
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72% |
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in |
1983 |
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| Minimum
Humidity |
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45% |
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76% |
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58% |
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-13% |
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93% |
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in |
2003 |
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34% |
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in |
2007 |
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| Average Humidity |
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71% |
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86% |
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75% |
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-5% |
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97% |
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in |
2003 |
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59% |
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in |
1983 |
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| Maximum Barometer |
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30.00 |
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30.07 |
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30.09 |
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-00.09 |
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30.63 |
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in |
1989 |
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29.70 |
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in |
1957 |
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| Minimum
Barometer |
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29.73 |
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29.88 |
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29.89 |
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-00.16 |
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30.24 |
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in |
1965 |
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29.30 |
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in |
2010 |
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| Average Barometer |
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29.87 |
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29.98 |
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29.99 |
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-00.12 |
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30.42 |
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in |
1989 |
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29.53 |
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in |
2010 |
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| Average Wind |
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4.9 |
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7.3 |
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5.8 |
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-0.9 |
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12.1 |
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in |
1972 |
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1.3 |
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in |
1969 |
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| Direction |
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NW |
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SSW |
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S |
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WNW |
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ESE |
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| High Wind Gust |
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17 |
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24 |
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21 |
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-4 |
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37 |
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in |
1988 |
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11 |
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in |
1969 |
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| Direction |
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SW |
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SSW |
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SSW |
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SSE |
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S |
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| High
Heat Index |
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91 |
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83 |
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78 |
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+13 |
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99 |
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in |
1973 |
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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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71.1 |
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70.6 |
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70.4 |
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+0.7 |
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73.7 |
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in |
2018 |
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65.7 |
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in |
2017 |
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| Minimum
Water Temp |
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68.4 |
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68.7 |
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67.9 |
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+0.5 |
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71.4 |
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in |
2018 |
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63.4 |
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in |
2017 |
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| Average Water Temp |
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69.8 |
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69.7 |
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69.2 |
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+0.6 |
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72.6 |
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in |
2018 |
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64.6 |
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in |
2017 |
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| Sunrise/ AM Twilight |
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6:15:49 AM |
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5:47:42 AM |
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| Sunset /
PM Twilight |
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7:11:50 PM |
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7:39:57 PM |
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| Length Of Day |
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12:56:01 |
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| Special Conditions |
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Fog |
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| Comments |
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September
4, 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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79.3 |
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77.8 |
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75.5 |
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+3.8 |
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89.0 |
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in |
1929 |
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67.3 |
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in |
2003 |
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| Avg
Minimum Temperature |
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64.8 |
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60.5 |
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60.5 |
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+4.3 |
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72.5 |
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in |
1959 |
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51.5 |
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in |
1967 |
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| Average Temperature |
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72.0 |
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69.1 |
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68.0 |
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+4.0 |
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78.9 |
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in |
1898 |
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60.6 |
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in |
2017 |
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| Total
Precipitation |
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.39 |
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.00 |
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.52 |
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-.13 |
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4.15 |
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in |
1905 |
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.00 |
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in |
2019 |
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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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0 |
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4 |
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-4 |
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18 |
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in |
2017 |
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0 |
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in |
2020 |
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| Total CDD |
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29 |
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17 |
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16 |
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+13 |
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57 |
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in |
1898 |
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0 |
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in |
1986 |
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| Avg Maximum Dew Point |
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70.3 |
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67.5 |
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63.6 |
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+6.7 |
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74.3 |
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in |
1959 |
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54.3 |
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in |
1975 |
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| Avg
Minimum Dew Point |
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58.5 |
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58.0 |
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54.5 |
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+4.0 |
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70.5 |
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in |
1959 |
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41.8 |
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in |
1967 |
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| Average Dew Point |
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64.4 |
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62.8 |
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59.1 |
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+5.3 |
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72.4 |
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in |
1959 |
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48.6 |
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in |
1967 |
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September 4, 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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24.42 |
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37.83 |
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32.14 |
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-7.72 |
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45.30 |
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in |
1998 |
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16.55 |
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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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0 |
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13 |
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-13 |
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18 |
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in |
2017 |
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0 |
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in |
2020 |
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| Total CDD
(since Jan 1) |
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795 |
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675 |
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514 |
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+281 |
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795 |
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in |
2020 |
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272 |
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in |
1902 |
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| Hour-by-Hour Weather For September 4, 2020 |
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| Climate Weather for September 4 |
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| Weather History For September 4 |
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| Weather Calendar |
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