Portsmouth Rhode Island Weather Almanac
Monday, February 1, 2021
Cloudy, Moderate/Heavy Snow and Fog, Some Mixing Late, Windy and Warmer
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    February 1, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   35   40   37   -2   57   in 2012   14   in 1971  
Minimum Temperature   24   33   23   +1   43   in 2016   -5   in 1920  
Average Temperature   30   37   31   -1   49   in 2016   8   in 1920  
 Month Avg Max Temperature   35.0   40.0   37.0   -2.0   57.0   in 2012   14.0   in 1971  
Month Avg Min Temperature   24.0   33.0   23.0   +1.0   43.0   in 2016   -5.0   in 1920  
Month Average Temperature   30.0   37.0   31.0   -1.0   49.0   in 2016   8.0   in 1920  
Precipitation   .67   .21   .11   +.56   1.92   in 1915            
One Hour   .00   .10           .63   in 1982            
Hourly Rate   .00   .15           1.15   in 2008            
Month Precipitation   .67   .21   .11   +.56   1.92   in 1915   .00   in 2019  
Year Precipitation   2.63   2.25   3.78   -1.15   12.07   in 1979   .93   in 1955  
Snow   4.4   0.0   0.3   +4.1   10.9   in 1898            
Month Snow   4.4   0.0   0.3   +4.1   10.9   in 1898   0.0   in 2020  
Season Snow   16.1   12.2   17.4   -1.3   46.0   in 2005   0.8   in 2007  
Snow Depth   1   0           22   in 2005            
HDD   35   28   34   +1   57   in 1920   16   in 2016  
Month HDD   35   28   34   +1   57   in 1920   16   in 2016  
Season HDD   2696   2793   2953   -257   3820   in 1918   2307   in 2016  
CDD   0   0   0   +0   0   in   0   in    
Month CDD   0   0   0   +0   0   in     0   in    
Year CDD   0   0   0   +0   0   in     0   in    
Maximum Dew Point   34   36   27   +7   56   in 1951   -5   in 1971  
Minimum Dew Point   18   31   11   +7   36   in 2012   -21   in 1961  
Average  Dew Point   26   34   19   +7   42   in 1988   -10   in 1961  
 Month Avg Max Dew Point   34.0   36.0   27.0   +7.0   56.0   in 1951   -5.0   in 1971  
Month Avg Min Dew Point   18.0   31.0   11.0   +7.0   36.0   in 2012   -21.0   in 1961  
Month Average Dew Point   26.0   34.0   19.0   +7.0   41.5   in 1988   -9.5   in 1961  
    February 1, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   98%   95%   82%   +16%   100%   in 2003   45%   in 1980  
Minimum Humidity   77%   84%   53%   +24%   94%   in 1951   18%   in 1991  
Average Humidity   88%   90%   67%   +20%   97%   in 1951   38%   in 1991  
Maximum Barometer   30.22   30.18   30.19   +00.03   30.86   in 1973   29.40   in 1979  
Minimum Barometer   29.56   29.62   29.84   -00.28   30.45   in 1973   29.13   in 1958  
Average Barometer   29.89   29.90   30.02   -00.13   30.66   in 1973   29.27   in 1979  
Average Wind   13.0   3.4   7.8   +5.2   18.2   in 1953   1.9   in 2005  
Direction   NE   NNW   NNW       WNW         NNW        
High Wind Gust   43   12   26   +17   52   in 1953   8   in 2005  
Direction   NNE   NNW   NW       NNW         NW        
High Heat Index                                      
Wind Chill   17   30   12   +5             -14   in 1980  
Maximum Water Temp   40.3   36.7   38.3   +2.0   44.4   in 2012   31.8   in 2019  
Minimum Water Temp   37.4   35.4   36.4   +1.0   42.9   in 2012   29.1   in 2019  
Average Water Temp   38.9   36.1   37.3   +1.5   43.7   in 2012   30.5   in 2019  
Sunrise/ AM Twilight   6:55:32 AM   6:26:24 AM            
Sunset / PM Twilight   5:02:22 PM   5:31:30 PM            
Length Of Day   10:06:50                          
Special Conditions   Dense Fog, Sleet                          
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Portsmouth Rhode Island Weather Almanac
Tuesday, February 2, 2021
Cloudy, Light Snow/Rain Mix and Fog early, Windy and Warmer
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    February 2, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   39   42   37   +2   53   in 1951   15   in 1971  
Minimum Temperature   32   35   23   +9   37   in 2014   -2   in 1961  
Average Temperature   36   39   31   +5   45   in 1933   8   in 1961  
 Month Avg Max Temperature   37.0   41.0   37.0   +0.0   54.5   in 1951   14.5   in 1971  
Month Avg Min Temperature   28.0   34.0   23.0   +5.0   37.5   in 2016   1.0   in 1961  
Month Average Temperature   32.5   37.5   31.0   +1.5   45.5   in 2016   9.0   in 1971  
Precipitation   .04   .00   .11   -.07   1.09   in 1999            
One Hour   .02   .00           .38   in 1976            
Hourly Rate   .00   .00           .56   in 2011            
Month Precipitation   .71   .21   .22   +.49   2.32   in 1915   .00   in 2019  
Year Precipitation   2.67   2.25   3.89   -1.22   12.07   in 1979   1.00   in 1955  
Snow   T   0.0   0.3   -0.3   4.5   in 1895            
Month Snow   4.4   0.0   0.6   +3.8   10.9   in 1898   0.0   in 2020  
Season Snow   16.1   12.2   17.7   -1.6   46.0   in 2005   1.5   in 1989  
Snow Depth   4   0           24   in 1898            
HDD   29   26   34   -5   57   in 1961   20   in 1933  
Month HDD   64   54   68   -4   111   in 1971   39   in 2016  
Season HDD   2725   2819   2987   -262   3869   in 1918   2330   in 2016  
CDD   0   0   0   +0   0   in   0   in    
Month CDD   0   0   0   +0   0   in     0   in    
Year CDD   0   0   0   +0   0   in     0   in    
Maximum Dew Point   37   35   28   +9   51   in 1973   -6   in 1971  
Minimum Dew Point   28   27   12   +16   35   in 2014   -24   in 1961  
Average  Dew Point   33   31   20   +13   39   in 1973   -13   in 1961  
 Month Avg Max Dew Point   35.5   35.5   27.5   +8.0   52.5   in 1951   -5.5   in 1971  
Month Avg Min Dew Point   23.0   29.0   11.5   +11.5   33.0   in 1988   -22.5   in 1961  
Month Average Dew Point   29.3   32.3   20.0   +9.3   40.0   in 1988   -11.0   in 1961  
    February 2, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   93%   86%   +10%   100%   in 2014   43%   in 1980  
Minimum Humidity   84%   57%   55%   +29%   92%   in 1973   13%   in 1992  
Average Humidity   90%   75%   70%   +20%   96%   in 1973   34%   in 1975  
Maximum Barometer   29.56   29.62   30.16   -00.60   30.61   in 1956   29.24   in 1958  
Minimum Barometer   29.29   29.45   29.81   -00.52   30.44   in 2005   28.86   in 1976  
Average Barometer   29.43   29.54   29.98   -00.56   30.50   in 2005   29.16   in 1976  
Average Wind   13.5   4.7   8.3   +5.2   18.0   in 1976   2.1   in 1994  
Direction   NNE   NNW   WNW       W         SE        
High Wind Gust   40   15   26   +14   50   in 1976   11   in 1998  
Direction   NNE   NNW   NW       WNW         SW        
High Heat Index                                      
Wind Chill   24   31   12   +12             -22   in 1961  
Maximum Water Temp   41.0   36.7   38.8   +2.2   43.9   in 2012   35.2   in 2019  
Minimum Water Temp   38.8   35.8   36.8   +2.0   42.8   in 2012   30.4   in 2019  
Average Water Temp   39.9   36.3   37.8   +2.1   43.4   in 2012   32.8   in 2019  
Sunrise/ AM Twilight   6:54:29 AM   6:25:25 AM            
Sunset / PM Twilight   5:03:38 PM   5:32:42 PM            
Length Of Day   10:09:09                          
Special Conditions   Fog, Sleet                              
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