Portsmouth Rhode Island Weather Almanac
Thursday, January 28, 2021
Mostly Cloudy Morning, Cloudy Day with Snow Flurries & Fog, Clearing PM, Windy and Colder
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    January 28, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   32   43   37   -5   56   in 1974   15   in 1925  
Minimum Temperature   17   34   23   -6   40   in 2018   -1   in 1935  
Average Temperature   25   39   30   -5   46   in 2002   10   in 1925  
 Month Avg Max Temperature   40.0   43.4   38.0   +2.1   45.7   in 1913   28.0   in 2004  
Month Avg Min Temperature   27.8   29.9   24.1   +3.6   32.5   in 1932   12.1   in 1982  
Month Average Temperature   34.1   36.9   31.0   +3.1   39.0   in 1932   21.5   in 1970  
Precipitation   T   .00   .11   -.11   1.44   in 1976            
One Hour   .00   .00           .42   in 2009            
Hourly Rate   .00   .00           3.33   in 2009            
Month Precipitation   1.96   2.03   3.34   -1.38   12.04   in 1979   .78   in 1955  
Year Precipitation   1.96   2.03   3.34   -1.38   12.04   in 1979   .78   in 1955  
Snow   T   0.0   0.3   -0.3   13.7   in 1897            
Month Snow   3.7   3.8   9.1   -5.4   33.8   in 2005   T   in 1950  
Season Snow   11.7   12.2   16.2   -4.5   46.0   in 2005   0.8   in 2007  
Snow Depth   2   0           27   in 2005            
HDD   40   26   35   +5   55   in 1925   19   in 2002  
Month HDD   864   787   951   -87   1217   in 1970   727   in 1932  
Season HDD   2512   2667   2815   -303   3640   in 1918   2215   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    
    January 28, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Dew Point   28   30   27   +1   52   in 1976   -1   in 1971  
Minimum Dew Point   5   23   11   -6   37   in 2018   -11   in 2003  
Average  Dew Point   17   27   19   -2   42   in 2018   -6   in 1971  
 Month Avg Max Dew Point   24.7   32.4   30.2   -5.5   37.3   in 1950   15.3   in 1981  
Month Avg Min Dew Point   19.5   20.9   14.1   +5.4   23.6   in 2017   -1.6   in 1982  
Month Average Dew Point   22.2   28.2   22.1   +0.1   30.1   in 2006   7.1   in 1981  
Maximum Humidity   89%   75%   82%   +7%   100%   in 2018   44%   in 1962  
Minimum Humidity   56%   54%   49%   +7%   92%   in 1952   22%   in 1990  
Average Humidity   73%   65%   66%   +7%   94%   in 1973   37%   in 2014  
Maximum Barometer   30.01   29.87   30.18   -00.17   30.85   in 1937   29.22   in 1979  
Minimum Barometer   29.89   29.65   29.84   +00.05   30.56   in 2005   28.96   in 1979  
Average Barometer   29.95   29.76   30.00   -00.05   30.65   in 2005   29.09   in 1979  
Average Wind   11.2   9.5   8.3   +2.9   22.7   in 1966   2.1   in 2011  
Direction   NNW   NW   WNW       WNW         WNW        
High Wind Gust   46   23   27   +19   52   in 1966   13   in 2016  
Direction   NNW   NNW   WNW       WNW         SSE        
High Heat Index                                      
Wind Chill   0   27   13   -13             -18   in 2003  
Maximum Water Temp   41.9   37.5   38.8   +3.1   44.8   in 2007   34.5   in 2005  
Minimum Water Temp   40.3   36.2   36.6   +3.7   43.3   in 2012   30.4   in 2005  
Average Water Temp   41.1   36.9   37.7   +3.4   43.8   in 2012   32.5   in 2005  
Sunrise/ AM Twilight   6:59:27 AM   6:30:01 AM            
Sunset / PM Twilight   4:57:18 PM   5:26:44 PM            
Length Of Day   9:57:51                          
Special Conditions   Fog                                  
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