Portsmouth Rhode Island Weather Almanac
Friday, January 22, 2021
Partly Cloudy and Much Warmer
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    January 22, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   45   37   37   +8   53   in 1959   14   in 2000  
Minimum Temperature   31   16   23   +8   41   in 1906   -1   in 2005  
Average Temperature   38   27   30   +8   46   in 2017   8   in 1970  
 Month Avg Max Temperature   41.7   42.3   38.3   +3.3   45.7   in 1937   27.0   in 1893  
Month Avg Min Temperature   29.5   29.2   24.5   +5.0   32.5   in 1932   9.7   in 1981  
Month Average Temperature   35.8   36.0   31.4   +4.4   39.0   in 1937   18.7   in 1981  
Precipitation   .00   .00   .12   -.12   1.07   in 1987            
One Hour   .00   .00           .32   in 1958            
Hourly Rate   .00   .00           .04   in 2008            
Month Precipitation   1.59   1.38   2.66   -1.07   9.13   in 1979   .51   in 1984  
Year Precipitation   1.59   1.38   2.66   -1.07   9.13   in 1979   .51   in 1984  
Snow   0.0   0.0   0.4   -0.4   8.5   in 1976            
Month Snow   0.3   3.8   6.8   -6.5   25.8   in 1996   0.0   in 1986  
Season Snow   8.3   12.2   13.9   -5.6   41.6   in 1996   0.5   in 1928  
Snow Depth   0   0           14   in 1961            
HDD   27   38   35   -8   57   in 1970   19   in 2017  
Month HDD   642   638   739   -97   1018   in 1981   573   in 1937  
Season HDD   2290   2518   2605   -315   3378   in 1918   2024   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   31   23   29   +2   53   in 1959   -7   in 2000  
Minimum Dew Point   22   6   12   +10   38   in 2017   -17   in 1970  
Average  Dew Point   27   15   21   +6   43   in 2017   -12   in 1970  
 Month Avg Max Dew Point   27.1   32.4   30.8   -3.7   36.3   in 1950   13.1   in 1981  
Month Avg Min Dew Point   22.2   19.5   14.8   +7.4   24.6   in 1995   -5.4   in 1981  
Month Average Dew Point   24.7   27.3   22.8   +2.0   31.9   in 1995   3.9   in 1981  
Maximum Humidity   83%   80%   82%   +1%   100%   in 2017   48%   in 2000  
Minimum Humidity   49%   47%   52%   -3%   90%   in 1993   25%   in 2003  
Average Humidity   66%   64%   67%   -1%   95%   in 1993   37%   in 2000  
Maximum Barometer   29.80   30.47   30.25   -00.45   30.75   in 1982   29.56   in 1985  
Minimum Barometer   29.57   30.39   29.94   -00.37   30.53   in 1984   29.02   in 1979  
Average Barometer   29.69   30.43   30.10   -00.41   30.59   in 1984   29.31   in 1979  
Average Wind   5.9   2.4   7.9   -2.0   20.0   in 1959   1.1   in 1955  
Direction   WNW   NW   NW       SSW         WSW        
High Wind Gust   21   11   26   -5   63   in 1959   10   in 1983  
Direction   NW   NW   NW       SSW         S        
High Heat Index                                      
Wind Chill   25   12   10   +15             -24   in 1970  
Maximum Water Temp   41.2   38.3   38.8   +2.4   46.6   in 2007   34.3   in 2003  
Minimum Water Temp   39.6   35.3   36.5   +3.1   42.1   in 2007   30.4   in 2019  
Average Water Temp   40.4   36.8   37.6   +2.8   44.3   in 2007   32.8   in 2019  
Sunrise/ AM Twilight   7:04:23 AM   6:34:32 AM            
Sunset / PM Twilight   4:49:50 PM   5:19:41 PM            
Length Of Day   9:45:27                          
Special Conditions   None                              
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