Portsmouth Rhode Island Weather Almanac
Wednesday, January 6, 2021
Cloudy, Light Snow and Fog early, Partly Cloudy Day to Cloudy PM, Windy and Warmer
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    January 6, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   42   37   39   +3   57   in 2007   9   in 1896  
Minimum Temperature   31   26   26   +5   52   in 2007   -4   in 1896  
Average Temperature   37   32   33   +4   55   in 2007   3   in 1896  
 Month Avg Max Temperature   40.5   43.2   39.9   +0.6   52.7   in 2000   18.5   in 1918  
Month Avg Min Temperature   30.8   34.3   26.0   +4.8   40.0   in 2007   4.5   in 1904  
Month Average Temperature   35.7   38.8   33.0   +2.7   46.2   in 2007   11.9   in 1918  
Precipitation   .03   T   .12   -.09   1.97   in 1929            
One Hour   .00   .00           .32   in 1962            
Hourly Rate   .00   .00           1.86   in 2007            
Month Precipitation   .45   .38   .72   -.27   3.54   in 1919   .00   in 1946  
Year Precipitation   .45   .38   .72   -.27   3.54   in 1919   .00   in 1946  
Snow   0.3   T   0.3   +0.0   3.2   in 2017            
Month Snow   0.3   T   1.8   -1.5   12.5   in 2018   0.0   in 2019  
Season Snow   8.3   8.4   8.9   -0.6   32.1   in 1905   T   in 2000  
Snow Depth   T   0           16   in 1948            
HDD   28   33   32   -4   62   in 1896   10   in 2007  
Month HDD   175   156   192   -17   317   in 1918   112   in 2007  
Season HDD   1823   2036   2061   -238   2764   in 1918   1523   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   30   33   32   -2   57   in 2007   -3   in 1959  
Minimum Dew Point   23   20   16   +7   42   in 2007   -22   in 1959  
Average  Dew Point   27   27   24   +3   50   in 2007   -13   in 1959  
 Month Avg Max Dew Point   30.2   32.4   32.4   -2.3   45.0   in 1950   13.5   in 1981  
Month Avg Min Dew Point   25.5   28.2   16.8   +8.8   33.2   in 1950   -11.3   in 1981  
Month Average Dew Point   28.0   33.9   24.6   +3.4   40.6   in 2007   1.1   in 1981  
Maximum Humidity   93%   90%   89%   +4%   100%   in 2014   43%   in 1959  
Minimum Humidity   57%   67%   57%   -0%   97%   in 1998   22%   in 2016  
Average Humidity   75%   79%   73%   +2%   99%   in 1998   34%   in 1959  
Maximum Barometer   29.92   29.98   30.12   -00.20   30.68   in 2000   29.62   in 1954  
Minimum Barometer   29.83   29.89   29.83   +00.00   30.37   in 2016   28.86   in 1931  
Average Barometer   29.88   29.94   29.97   -00.10   30.53   in 2000   29.53   in 1954  
Average Wind   9.5   2.5   7.3   +2.2   21.7   in 1959   1.2   in 1984  
Direction   NNW   W   WNW       WNW         SSE        
High Wind Gust   22   12   25   -3   52   in 1959   12   in 2020  
Direction   NNW   W   WNW       WNW         W        
High Heat Index                                      
Wind Chill   23   25   16   +7             -21   in 1996  
Maximum Water Temp   43.3   39.1   41.8   +1.5   51.3   in 2007   31.0   in 2018  
Minimum Water Temp   42.8   37.2   39.7   +3.1   50.2   in 2007   29.2   in 2018  
Average Water Temp   43.1   38.2   40.7   +2.3   50.7   in 2007   30.1   in 2018  
Sunrise/ AM Twilight   7:11:27 AM   6:40:35 AM            
Sunset / PM Twilight   4:31:43 PM   5:02:35 PM            
Length Of Day   9:20:16                          
Special Conditions   Fog                                  
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