Portsmouth Rhode Island Weather Almanac
Saturday, May 30, 2020
Dense Fog AM, Partly Cloudy Day to Clear PM, Very Warm and Muggy
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    May 30, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   80   60   69   +11   90   in 1931   53   in 1996    
Minimum Temperature   59   49   51   +8   66   in 1929   39   in 1970    
Average Temperature   70   55   61   +9   76   in 1942   49   in 1996    
Precipitation   .01   .21   .11   -.10   1.12   in 2016              
One Hour   .01   .09           .44   in 1991              
Snow   0.0   0.0   0.0   +0.0   0.0   in                
Snow Depth   0   0               in              
HDD   0   10   4   -4   16   in 1996   0   in 2015    
CDD   5   0   1   +4   11   in 1942              
Maximum Dew Point   68   56   57   +11   71   in 2011   40   in 1967    
Minimum Dew Point   55   48   47   +8   61   in 2012   27   in 1961    
Average  Dew Point   62   52   52   +10   66   in 2011   35   in 1967    
Maximum Humidity   98%   98%   92%   +6%   100%   in 2017   64%   in 1993    
Minimum Humidity   59%   81%   57%   +2%   96%   in 2016   24%   in 1993    
Average Humidity   79%   90%   75%   +4%   98%   in 2016   44%   in 1993    
Maximum Barometer   29.93   29.84   30.04   -00.11   30.55   in 1970   29.64   in 2003    
Minimum Barometer   29.81   29.68   29.83   -00.02   30.34   in 1970   29.30   in 1990    
Average Barometer   29.87   29.76   29.94   -00.07   30.45   in 1970   29.56   in 1990    
Average Wind   5.8   5.3   5.7   +0.1   13.0   in 1984   2.2   in 2012    
Direction   SSW   S   SSE       SSE         WSW          
High Wind Gust   18   18   20   -2   39   in 1909   11   in 2012    
Direction   SSW   S   SSE       NW         WSW          
High Heat Index                   94   in 1942              
Wind Chill                             39   in 1996    
Maximum Water Temp   55.2   55.6   60.1   -4.9   68.4   in 2007   55.2   in 2020    
Minimum Water Temp   52.0   52.9   55.9   -3.9   61.5   in 2012   51.3   in 2005    
Average Water Temp   53.6   54.3   58.0   -4.4   64.9   in 2007   53.6   in 2020    
Sunrise/ AM Twilight   5:14:00 AM   4:40:55 AM            
Sunset / PM Twilight   8:11:59 PM   8:45:05 PM            
Length Of Day   14:57:59                          
Special Conditions   Dense Fog                              
Comments      
    May 30, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   65.3   63.3   64.6   +0.6   71.4   in 1991   57.4   in 1917  
Avg Minimum Temperature   46.9   47.9   47.7   -0.9   52.6   in 2012   41.9   in 1967  
Average Temperature   56.4   55.6   56.2   +0.2   60.5   in 1991   50.5   in 1967  
Total Precipitation   3.01   4.22   3.48   -.47   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   267   280   265   +2   435   in 1967   168   in 1993  
Total CDD   8   8   8   +0   45   in 1991   0   in 2008  
Avg Maximum Dew Point   52.3   53.6   51.8   +0.5   57.9   in 2012   42.1   in 1967  
Avg Minimum Dew Point   39.4   42.8   40.3   -0.9   48.9   in 2012   31.2   in 1967  
Average  Dew Point   46.1   48.2   46.0   +0.0   53.5   in 2012   36.7   in 1967  
    May 30, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   19.21   21.88   20.52   -1.31   35.73   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)   5088   5490   5599   -511   6523   in 1905   4475   in 2012  
Total CDD (since Jan 1)   8   8   8   +0.0   45   in 1991   0   in 2008  
                             
Hour-by-Hour Weather For May 30, 2020  
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Portsmouth Rhode Island Weather Almanac
Friday, May 15, 2020
0
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020   PASTE VALUES
    May 15, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   71   78   70   +1   84   in 1900   50   in 1916    
Minimum Temperature   50   55   52   -2   57   in 2012   38   in 1986    
Average Temperature   61   67   61   +0   68   in 1976   46   in 1947    
Precipitation   .42   .03   .11   +.31   1.53   in 1938              
One Hour   .15   .02           .56   in 1978              
Snow   0.0   0.0   0.0   +0.0   0.0   in                
Snow Depth   0   0               in              
HDD   4   0   4   +0   19   in 1947   0   in 1976    
CDD   0   2   1   -1   3   in 1976              
Maximum Dew Point   61   66   57   +4   64   in 2004   35   in 2002    
Minimum Dew Point   46   54   48   -2   55   in 2014   24   in 1971    
Average  Dew Point   54   60   52   +2   59   in 2014   31   in 1971    
Maximum Humidity   95%   98%   92%   +3%   100%   in 2018   59%   in 2000    
Minimum Humidity   64%   60%   57%   +7%   94%   in 1953   25%   in 1994    
Average Humidity   80%   79%   75%   +5%   96%   in 1953   46%   in 2000    
Maximum Barometer   30.11   29.84   30.02   +00.09   30.53   in 1971   29.61   in 1960    
Minimum Barometer   29.81   29.63   29.80   +00.01   30.32   in 1999   29.40   in 2017    
Average Barometer   29.96   29.74   29.91   +00.05   30.38   in 1999   29.58   in 1960    
Average Wind   7.4   6.4   5.8   +1.6   14.3   in 2002   2.2   in 1962    
Direction   SSW   SE   SE       WNW         SSE          
High Wind Gust   20   20   21   -1   40   in 2002   9   in 1998    
Direction   SSE   S   SE       WNW         SSE          
High Heat Index       80           83   in 1900              
Wind Chill                             37   in 1985    
Maximum Water Temp   49.8   57.2   60.6   -10.8   59.9   in 2007   49.5   in 2019    
Minimum Water Temp   45.1   52.5   56.5   -11.4   56.6   in 2012   45.1   in 2020    
Average Water Temp   47.5   54.9   58.6   -11.2   58.0   in 2007   47.5   in 2020    
Sunrise/ AM Twilight   5:24:39 AM   4:52:59 AM            
Sunset / PM Twilight   7:58:37 PM   8:30:17 PM            
Length Of Day   14:33:58                          
Special Conditions   None                                  
Comments      
    May 15, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   61.5   63.8   64.8   -3.3   71.3   in 2001   52.4   in 1917  
Avg Minimum Temperature   43.1   48.2   47.9   -4.7   50.4   in 1930   39.8   in 1967  
Average Temperature   52.3   56.0   56.3   -4.0   60.3   in 1930   46.1   in 1917  
Total Precipitation   1.95   4.25   3.59   -1.64   6.16   in 2006   .01   in 2015  
Total Snow   0.0   0.0   T   +0.0   1.7   in 1977   0.0   in    
Total HDD   186   280   269   -83   280   in 1917   79   in 1930  
Total CDD   0   10   9   -9   27   in 2001   0   in    
Avg Maximum Dew Point   46.6   54.0   52.0   -5.4   55.7   in 2004   40.3   in 1966  
Avg Minimum Dew Point   31.9   43.2   40.6   -8.7   45.7   in 1998   27.5   in 1966  
Average  Dew Point   39.2   48.6   46.3   -7.0   49.9   in 1998   33.9   in 1966  
    May 15, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   18.15   21.91   20.63   -2.48   32.13   in 1983   10.56   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)   5007   5490   5603   -596   6395   in 1905   4437   in 2012  
Total CDD (since Jan 1)   0   10   9   -9.0   27   in 2001   0   in 2020  
                             
Hour-by-Hour Weather For May 31, 2020  
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