Portsmouth Rhode Island Weather Almanac
Thursday, February 4, 2021
Cloudy and Light Snow Flurries early, Partly Cloudy Day to Clear PM and Mild
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    February 4, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   40   48   38   +2   58   in 1991   13   in 1996  
Minimum Temperature   29   35   24   +5   42   in 2016   -1   in 1918  
Average Temperature   35   42   31   +4   48   in 2016   9   in 1996  
 Month Avg Max Temperature   37.5   44.3   37.5   +0.0   53.8   in 2016   19.3   in 1971  
Month Avg Min Temperature   28.8   33.3   23.5   +5.3   38.5   in 2016   4.5   in 1971  
Month Average Temperature   33.1   38.8   31.0   +2.1   46.1   in 2016   11.9   in 1971  
Precipitation   T   .00   .11   .00   2.46   in 1961            
One Hour   .00   .00           .30   in 1995            
Hourly Rate   .00   .00           1.06   in 2006            
Month Precipitation   .71   .21   .44   +.27   3.16   in 1970   .00   in 2019  
Year Precipitation   2.67   2.25   4.11   -1.44   12.07   in 1979   1.00   in 1955  
Snow   T   0.0   0.3   -0.3   17.9   in 1961            
Month Snow   4.4   0.0   1.2   +3.2   17.9   in 1961   0.0   in 2020  
Season Snow   16.1   12.2   18.3   -2.2   51.0   in 1996   1.5   in 1989  
Snow Depth   2   0           24   in 1898            
HDD   30   23   34   -4   56   in 1996   17   in 2016  
Month HDD   126   103   136   -10   211   in 1971   75   in 2016  
Season HDD   2787   2868   3055   -268   3958   in 1918   2366   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   26   41   29   -3   53   in 2016   -5   in 1996  
Minimum Dew Point   23   31   12   +11   41   in 1984   -15   in 1978  
Average  Dew Point   25   36   21   +4   46   in 2016   -10   in 1978  
 Month Avg Max Dew Point   31.8   37.0   28.0   +3.8   46.3   in 2016   1.3   in 1971  
Month Avg Min Dew Point   23.3   29.3   11.8   +11.5   32.8   in 2016   -11.3   in 1980  
Month Average Dew Point   27.5   33.1   21.0   +6.5   39.5   in 2016   -3.6   in 1980  
    February 4, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   77%   92%   83%   -6%   100%   in 2018   50%   in 1981  
Minimum Humidity   56%   70%   51%   +5%   94%   in 1984   22%   in 2007  
Average Humidity   67%   81%   67%   -1%   97%   in 1984   37%   in 2007  
Maximum Barometer   29.87   29.91   30.15   -00.28   30.75   in 1975   29.50   in 1954  
Minimum Barometer   29.57   29.73   29.77   -00.20   30.45   in 1963   28.72   in 1995  
Average Barometer   29.72   29.82   29.96   -00.24   30.58   in 1975   29.39   in 1972  
Average Wind   7.4   3.5   8.1   -0.7   21.8   in 1961   1.4   in 1966  
Direction   NW   ENE   NW       NE         ENE        
High Wind Gust   23   13   26   -3   55   in 1972   9   in 1966  
Direction   NW   ENE   NW       SSE         E        
High Heat Index                                      
Wind Chill   23   31   12   +11             -16   in 1978  
Maximum Water Temp   40.5   36.9   38.5   +2.0   44.1   in 2016   35.6   in 2018  
Minimum Water Temp   39.7   36.0   37.0   +2.7   43.0   in 2016   32.6   in 2018  
Average Water Temp   40.1   36.5   37.8   +2.3   43.6   in 2016   34.1   in 2018  
Sunrise/ AM Twilight   6:52:18 AM   6:23:22 AM            
Sunset / PM Twilight   5:06:10 PM   5:35:05 PM            
Length Of Day   10:13:52                          
Special Conditions   None                              
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