Portsmouth Rhode Island Weather Almanac
Sunday, May 31, 2020
Partly Cloudy early, Clear Day to Partly Cloudy PM, Windy, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    May 31, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   69   78   70   -1   90   in 1895   57   in 1912    
Minimum Temperature   53   55   52   +1   67   in 1987   37   in 1961    
Average Temperature   61   67   61   +0   78   in 1929   50   in 1961    
Precipitation   .00   .03   .11   -.11   4.87   in 1984              
One Hour   .00   .02           .57   in 1984              
Snow   0.0   0.0   0.0   +0.0   0.0   in                
Snow Depth   0   0               in              
HDD   4   0   4   +0   15   in 1961   0   in 2016    
CDD   0   2   1   -1   13   in 1929              
Maximum Dew Point   55   66   57   -2   70   in 2013   38   in 1967    
Minimum Dew Point   34   54   48   -14   61   in 2016   27   in 1967    
Average  Dew Point   45   60   52   -7   65   in 2016   33   in 1967    
Maximum Humidity   73%   98%   92%   -19%   100%   in 2018   43%   in 1954    
Minimum Humidity   33%   60%   57%   -24%   95%   in 1984   23%   in 1954    
Average Humidity   53%   79%   75%   -22%   98%   in 1984   33%   in 1954    
Maximum Barometer   30.14   29.84   30.02   +00.12   30.48   in 1902   29.70   in 2003    
Minimum Barometer   29.85   29.63   29.80   +00.05   30.14   in 1957   29.40   in 1991    
Average Barometer   30.00   29.74   29.91   +00.08   30.20   in 1957   29.62   in 1983    
Average Wind   12.4   6.4   5.8   +6.6   12.4   in 2020   1.8   in 1991    
Direction   NW   SE   SE       NW         SSE          
High Wind Gust   24   20   21   +3   33   in 1962   13   in 2017    
Direction   #N/A   S   SE       SW         SSE          
High Heat Index       80           95   in 1929              
Wind Chill                             36   in 1961    
Maximum Water Temp   54.1   57.2   60.6   -6.5   66.7   in 2007   54.1   in 2020    
Minimum Water Temp   50.2   52.5   56.5   -6.3   62.1   in 2012   50.2   in 2020    
Average Water Temp   52.2   54.9   58.6   -6.5   63.8   in 2012   52.2   in 2020    
Sunrise/ AM Twilight   5:13:33 AM   4:40:23 AM            
Sunset / PM Twilight   8:12:45 PM   8:45:55 PM            
Length Of Day   14:59:12                          
Special Conditions   None                                  
Comments      
    May 31, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   65.4   63.8   64.8   +0.6   71.4   in 1991   57.7   in 1917  
Avg Minimum Temperature   47.1   48.2   47.9   -0.8   52.8   in 2012   42.0   in 1967  
Average Temperature   56.5   56.0   56.3   +0.2   60.7   in 1991   50.6   in 1967  
Total Precipitation   3.01   4.25   3.59   -.58   9.19   in 1948   .35   in 2015  
Total Snow   0.0   0.0   T   +0.0   1.7   in 1977   0.0   in    
Total HDD   271   280   269   +2   445   in 1967   169   in 2010  
Total CDD   8   10   9   -1   46   in 1991   0   in 2008  
Avg Maximum Dew Point   52.4   54.0   52.0   +0.4   58.1   in 2012   42.0   in 1967  
Avg Minimum Dew Point   39.2   43.2   40.6   -1.3   49.0   in 2012   31.1   in 1967  
Average  Dew Point   46.0   48.6   46.3   -0.2   53.7   in 2012   36.5   in 1967  
    May 31, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   19.21   21.91   20.63   -1.42   35.75   in 1983   11.62   in 1905  
Total Snow (since Jul 1 19)   12.9   21.1   31.8   -18.9   84.1   in 1996   5.0   in 1998  
Total HDD (since Jul 1 19)   5092   5490   5603   -511   #N/A   in #N/A   #N/A   in #N/A  
Total CDD (since Jan 1)   8   10   9   -1.0   #N/A   in #N/A   #N/A   in 2008  
                             
Hour-by-Hour Weather For May 31, 2020  
Climate Weather for May 31  
Weather History For May 31  
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