Portsmouth Rhode Island Weather Almanac
Friday, January 15, 2021
Cloudy, Fog and Haze early, Mostly Cloudy Day to Cloudy PM and Continued Very Warm
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    January 15, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   45   49   38   +7   61   in 1932   11   in 2004  
Minimum Temperature   35   33   24   +11   51   in 1995   -9   in 1957  
Average Temperature   40   41   31   +9   54   in 1995   3   in 2004  
 Month Avg Max Temperature   40.9   45.0   39.0   +2.0   48.5   in 2007   23.9   in 1981  
Month Avg Min Temperature   29.7   33.6   25.1   +4.6   36.9   in 2007   7.3   in 1981  
Month Average Temperature   35.3   39.3   32.0   +3.3   42.7   in 2007   15.6   in 1981  
Precipitation   .00   .01   .12   -.12   1.93   in 1936            
One Hour   .00   .01           .36   in 2006            
Hourly Rate   .00   .00           .91   in 2006            
Month Precipitation   .45   .76   1.82   -1.37   6.72   in 1979   .12   in 1984  
Year Precipitation   .45   .76   1.82   -1.37   6.72   in 1979   .12   in 1984  
Snow   0.0   0.0   0.3   -0.3   8.5   in 1912            
Month Snow   0.3   1.5   4.5   -4.2   25.8   in 1996   0.0   in 2007  
Season Snow   8.3   9.9   11.6   -3.3   41.6   in 1996   0.2   in 1914  
Snow Depth   0   0           14   in 1923            
HDD   25   24   34   -9   62   in 2004   11   in 1995  
Month HDD   442   382   494   -52   737   in 1981   333   in 2007  
Season HDD   2090   2262   2362   -272   3089   in 1918   1780   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   36   41   30   +6   54   in 1995   -6   in 1986  
Minimum Dew Point   30   28   14   +16   48   in 1995   -28   in 1957  
Average  Dew Point   33   35   22   +11   51   in 1995   -16   in 1957  
 Month Avg Max Dew Point   27.3   32.4   31.5   -4.2   39.2   in 1950   10.1   in 1981  
Month Avg Min Dew Point   23.1   26.2   15.6   +7.5   27.9   in 2007   -8.8   in 1981  
Month Average Dew Point   25.3   32.5   23.6   +1.7   35.8   in 2007   0.6   in 1981  
Maximum Humidity   95%   96%   86%   +9%   100%   in 2014   48%   in 1992  
Minimum Humidity   63%   52%   56%   +7%   92%   in 2007   21%   in 1992  
Average Humidity   79%   74%   71%   +8%   96%   in 2007   35%   in 1992  
Maximum Barometer   30.09   30.14   30.23   -00.14   30.72   in 2005   29.41   in 1956  
Minimum Barometer   29.88   30.06   29.90   -00.02   30.50   in 2018   28.98   in 1951  
Average Barometer   29.99   30.10   30.06   -00.07   30.60   in 2018   29.29   in 2006  
Average Wind   5.4   5.5   8.0   -2.6   20.2   in 2006   1.8   in 1953  
Direction   NNE   WNW   WNW       N         NNW        
High Wind Gust   17   22   24   -7   52   in 1962   11   in 2007  
Direction   ESE   WNW   WNW       S         NNE        
High Heat Index                                      
Wind Chill   30   33   13   +18             -34   in 2004  
Maximum Water Temp   43.9   39.7   40.7   +3.2   48.9   in 2007   35.0   in 2018  
Minimum Water Temp   43.5   38.1   37.9   +5.6   47.1   in 2007   31.8   in 2018  
Average Water Temp   43.7   38.9   39.2   +4.5   48.0   in 2007   33.4   in 2018  
Sunrise/ AM Twilight   7:08:38 AM   6:38:18 AM            
Sunset / PM Twilight   4:41:28 PM   5:11:48 PM            
Length Of Day   9:32:50                          
Special Conditions   Fog, Haze                              
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