Portsmouth Rhode Island Weather Almanac
Monday, May 4, 2020
Cloudy and Light Rain early, Partly Cloudy Day to Mostly Cloudy PM, Windy and Continued Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    May 4, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   73   62   61   +12   87   in 2001   50   in 1987    
Minimum Temperature   50   52   45   +5   58   in 2001   33   in 1964    
Average Temperature   62   57   53   +9   73   in 2001   42   in 1911    
Precipitation   .05   .14   .13   -.08   2.41   in 1893              
One Hour   .04   .06           .42   in 1987              
Snow   0.0   0.0   0.0   +0.0   0.0   in                
Snow Depth   0   0               in              
HDD   3   8   12   -9   23   in 1911   0   in 2010    
CDD   0   0   0   +0   8   in 2001              
Maximum Dew Point   52   58   48   +4   62   in 2018   23   in 1986    
Minimum Dew Point   35   49   35   -0   50   in 2018   15   in 1986    
Average  Dew Point   44   54   42   +2   56   in 2018   19   in 1986    
Maximum Humidity   86%   98%   87%   -1%   100%   in 2015   54%   in 1967    
Minimum Humidity   27%   82%   48%   -21%   92%   in 2012   16%   in 1980    
Average Humidity   57%   90%   68%   -11%   96%   in 2012   40%   in 1952    
Maximum Barometer   29.76   29.99   30.05   -00.29   30.55   in 1990   29.61   in 1983    
Minimum Barometer   29.58   29.85   29.82   -00.24   30.29   in 1993   29.12   in 1984    
Average Barometer   29.67   29.92   29.93   -00.26   30.36   in 1993   29.39   in 1984    
Average Wind   9.8   3.8   7.0   +2.8   15.2   in 1981   2.4   in 2009    
Direction   NW   ESE   SSW       NNE         SSE          
High Wind Gust   30   15   24   +6   46   in 2014   13   in 2012    
Direction   NNW   NNE   SSW       W         S          
High Heat Index                   86   in 2001              
Wind Chill                             26   in 1986    
Maximum Water Temp   46.4   47.5   51.9   -5.5   58.6   in 2007   46.4   in 2020    
Minimum Water Temp   42.6   45.0   48.7   -6.1   52.3   in 1998   42.6   in 2020    
Average Water Temp   44.5   46.3   50.3   -5.8   54.7   in 2007   44.5   in 2020    
Sunrise/ AM Twilight   5:36:33 AM   5:06:02 AM            
Sunset / PM Twilight   7:47:17 PM   8:17:48 PM            
Length Of Day   14:10:44                          
Special Conditions   None                                  
Comments      
    May 4, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   68.0   57.8   60.8   +7.3   83.8   in 2001   51.3   in 1920  
Avg Minimum Temperature   50.0   45.8   44.5   +5.5   54.5   in 2001   34.8   in 1964  
Average Temperature   59.0   51.8   52.5   +6.5   69.1   in 2001   45.1   in 1917  
Total Precipitation   .95   .81   .53   +.42   2.92   in 1900   .00   in 2015  
Total Snow   0.0   0.0   T   +0.0   T   in 1995   0.0   in    
Total HDD   23   52   49   -26   78   in 1917   1   in 2001  
Total CDD   0   0   0   +0   19   in 2001   0   in    
Avg Maximum Dew Point   54.5   52.0   47.7   +6.9   58.3   in 2010   28.3   in 1952  
Avg Minimum Dew Point   40.5   42.3   34.7   +5.8   47.5   in 2010   16.8   in 1974  
Average  Dew Point   47.5   47.1   41.2   +6.3   52.9   in 2010   25.3   in 1957  
    May 4, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   17.15   18.47   17.57   -.42   31.53   in 1983   9.77   in 1927  
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)   4844   5262   5383   -539   6309   in 1904   4348   in 2012  
Total CDD (since Jan 1)   0   0   0   +0.0   19   in 2001   0   in 2020  
                             
Hour-by-Hour Weather For May 4, 2020  
Climate Weather for May 4  
Weather History For May 4  
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