Portsmouth Rhode Island Weather Almanac  
Tuesday, June 20, 2023  
Partly Cloudy, Light Winds and Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    June 20, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   69   76   75   -6   92   in 1931   58   in 1958  
Minimum Temperature   54   53   59   -5   67   in 1949   46   in 1956  
Average Temperature   62   65   67   -5   79   in 1931   55   in 1905  
 Month Avg Max Temperature   71.2   73.8   72.3   -1.1   78.2   in 1925   64.9   in 1907  
Month Avg Min Temperature   54.5   57.3   56.2   -1.7   59.4   in 1899   49.9   in 1907  
Month Average Temperature   63.1   65.7   64.3   -1.3   68.8   in 1925   57.5   in 1907  
High Heat Index   69   75           96   in 1931            
Low Wind Chill                             45   in 1956  
Heating Degree Days   3   0   1   +2   10   in 1905   0   in 2022  
Month Heating DD   58   23   43   +15   159   in 1907   3   in 1899  
Season Heating DD   4780   5008   5471   -691   6615   in 1905   4433   in 1932  
Cooling Degree Days   0   0   3   -3   14   in 1931   0   in 2023  
Month Cooling DD   19   37   37   -18   92   in 1925   0   in 1965  
Year Cooling DD   28   60   48   -20   101   in 2001   1   in 1948  
Maximum Dew Point   60   55   64   -4   74   in 1995   49   in 1970  
Minimum Dew Point   53   45   55   -2   63   in 2010   37   in 2014  
Average  Dew Point   57   50   59   -2   67   in 2020   45   in 1970  
 Month Avg Max Dew Point   60.6   61.6   61.4   -0.8   65.3   in 1996   53.2   in 1965  
Month Avg Min Dew Point   52.3   52.3   51.5   +0.8   55.0   in 2010   43.1   in 1958  
Month Average Dew Point   56.4   56.9   56.3   +0.1   60.0   in 1996   48.6   in 1965  
Precipitation   .00   .00   .12   -.12   1.48   in 1981            
One Hour Rain   .00   .00           .51   in 1968            
Hourly Rain Rate   .00   .00           2.04   in 2006            
Month Precipitation   1.23   2.71   2.37   -1.14   8.90   in 1982   .01   in 1949  
Year Precipitation   21.90   21.91   21.41   +.49   38.24   in 1998   12.67   in 1957  
Snow                                      
Snow Depth                                      
Month Snow                                      
Season Snow   9.1   34.7   33.5   -24.4   84.1   in 1996   5.0   in 1998  
    June 20, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   97%   91%   92%   +5%   100%   in 2019   54%   in 1954  
Minimum Humidity   72%   35%   58%   +14%   93%   in 2019   28%   in 2014  
Average Humidity   85%   63%   75%   +10%   97%   in 2019   43%   in 1954  
Maximum Barometer   30.29   30.09   30.01   +00.28   30.55   in 2002   29.67   in 1959  
Minimum Barometer   30.18   29.98   29.81   +00.37   30.45   in 2002   29.39   in 1985  
Average Barometer   30.24   30.04   29.91   +00.32   30.50   in 2002   29.62   in 1959  
Average Wind   4.7   5.8   5.9   -1.2   14.0   in 1967   1.6   in 1998  
Direction   SSE   NW   SSW       NNE SSE
High Wind Gust   18   20   22   -4   39   in 1967   10   in 1998  
Direction   S   WNW   SW       NNE ENE
Maximum Water Temp   65.1   63.7   65.7   -0.6   70.3   in 2007   61.8   in 2003  
Minimum Water Temp   63.3   62.2   61.9   +1.4   67.2   in 2007   57.4   in 2003  
Average Water Temp   64.2   63.0   63.8   +0.4   68.8   in 2007   59.6   in 2003  
Sunrise/ AM Twilight   5:10:55 AM   4:37:34 AM            
Sunset / PM Twilight   8:22:23 PM   8:56:35 PM            
Length Of Day   15:11:28                          
Special Conditions   None                              
Comments      
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