Portsmouth Rhode Island Weather Almanac
Saturday, January 23, 2021
Mostly Cloudy early, Partly Cloudy Day to Clear PM, Windy and Colder
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    January 23, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   33   45   37   -4   56   in 1974   15   in 2003  
Minimum Temperature   19   25   23   -4   44   in 1906   -5   in 1976  
Average Temperature   26   35   30   -4   50   in 1906   5   in 1976  
 Month Avg Max Temperature   41.3   42.4   38.3   +3.0   45.8   in 1913   27.3   in 1893  
Month Avg Min Temperature   29.0   29.0   24.4   +4.6   32.4   in 1932   10.4   in 1981  
Month Average Temperature   35.4   36.0   31.4   +4.0   38.9   in 1932   19.4   in 1981  
Precipitation   .00   .00   .12   -.12   1.85   in 1992            
One Hour   .00   .00           .42   in 2018            
Hourly Rate   .00   .00           1.82   in 2018            
Month Precipitation   1.59   1.38   2.78   -1.19   9.13   in 1979   .51   in 1984  
Year Precipitation   1.59   1.38   2.78   -1.19   9.13   in 1979   .51   in 1984  
Snow   0.0   0.0   0.4   -0.4   15.5   in 2005            
Month Snow   0.3   3.8   7.2   -6.9   31.4   in 2005   0.0   in 1986  
Season Snow   8.3   12.2   14.3   -6.0   43.6   in 2005   0.5   in 1928  
Snow Depth   0   0           13   in 1961            
HDD   39   30   35   +4   60   in 1976   15   in 1906  
Month HDD   681   668   774   -93   1049   in 1981   600   in 1932  
Season HDD   2329   2548   2640   -311   3423   in 1918   2060   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   23   31   28   -5   55   in 1973   -6   in 1976  
Minimum Dew Point   6   19   12   -6   39   in 2018   -26   in 1976  
Average  Dew Point   15   25   20   -5   46   in 2018   -16   in 1976  
 Month Avg Max Dew Point   26.5   32.4   30.7   -4.1   36.5   in 1950   13.5   in 1981  
Month Avg Min Dew Point   21.5   19.5   14.6   +6.8   24.6   in 1995   -4.5   in 1981  
Month Average Dew Point   24.1   27.2   22.7   +1.4   31.7   in 1995   4.5   in 1981  
Maximum Humidity   68%   86%   88%   -20%   100%   in 2018   53%   in 1976  
Minimum Humidity   41%   47%   55%   -14%   90%   in 1999   19%   in 1962  
Average Humidity   55%   67%   72%   -17%   95%   in 1999   43%   in 1976  
Maximum Barometer   29.99   30.42   30.22   -00.23   30.64   in 1984   29.56   in 1980  
Minimum Barometer   29.80   30.33   29.83   -00.03   30.42   in 1984   28.68   in 1987  
Average Barometer   29.90   30.38   30.02   -00.13   30.53   in 1984   29.20   in 1987  
Average Wind   13.5   3.3   8.7   +4.8   25.5   in 1957   2.3   in 2001  
Direction   NW   SSW   W       SSW         S        
High Wind Gust   34   13   28   +6   61   in 1957   12   in 1950  
Direction   NNW   SSW   WNW       S         WSW        
High Heat Index                                      
Wind Chill   5   25   12   -7             -32   in 1976  
Maximum Water Temp   40.6   38.2   39.1   +1.5   45.5   in 2007   34.3   in 2014  
Minimum Water Temp   38.8   35.2   36.7   +2.1   43.5   in 2007   31.5   in 2003  
Average Water Temp   39.7   36.7   37.9   +1.8   44.5   in 2007   33.5   in 2014  
Sunrise/ AM Twilight   7:03:39 AM   6:33:52 AM            
Sunset / PM Twilight   4:51:04 PM   5:20:51 PM            
Length Of Day   9:47:25                          
Special Conditions   None                              
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