Portsmouth Rhode Island Weather Almanac
Thursday, September 24, 2020
Clear early, Partly Cloudy Day to Mostly Cloudy PM, Warmer
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    September 24, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   77   77   69   +8   82   in 2017   55   in 1992  
Minimum Temperature   56   61   54   +2   67   in 2011   39   in 1953  
Average Temperature   67   69   62   +5   73   in 1984   48   in 1992  
Precipitation   .00   .46   .13   -.13   2.26   in 1975            
One Hour   .00   .40           .40   in 2019            
Snow   #N/A   0.0   0.0   #N/A   0.0   in              
Snow Depth   #N/A   0           0   in            
HDD   0   0   4   -4   17   in 1992   0   in 2020  
CDD   2   4   1   +1   8   in 1984   0   in 2018  
Maximum Dew Point   61   67   58   +3   72   in 2011   37   in 1950  
Minimum Dew Point   52   55   49   +3   66   in 2011   26   in 1963  
Average  Dew Point   57   61   53   +4   69   in 2011   33   in 1963  
Maximum Humidity   88%   96%   91%   -3%   100%   in 2017   70%   in 1950  
Minimum Humidity   52%   54%   56%   -4%   98%   in 1973   32%   in 1963  
Average Humidity   70%   75%   73%   -3%   99%   in 1973   55%   in 1988  
Maximum Barometer   30.01   29.83   30.15   -00.14   30.61   in 1953   29.69   in 1966  
Minimum Barometer   29.87   29.69   29.94   -00.07   30.41   in 2008   29.43   in 1987  
Average Barometer   29.94   29.76   30.05   -00.11   30.49   in 2014   29.59   in 1964  
Average Wind   5.0   7.8   6.1   -1.1   13.0   in 1966   1.8   in 2004  
Direction   SW   WNW   WNW       W         SE        
High Wind Gust   17   20   21   -4   39   in 1931   10   in 2017  
Direction   SW   SSW   NNE       NW         NNE        
High Heat Index   77   77   69   +8   84   in 1984            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   66.2   68.1   67.1   -0.9   69.2   in 2016   63.8   in 2013  
Minimum Water Temp   64.6   66.6   65.2   -0.6   67.6   in 2016   61.9   in 1997  
Average Water Temp   65.4   67.4   66.1   -0.7   68.4   in 2016   62.9   in 1997  
Sunrise/ AM Twilight   6:36:08 AM   6:08:37 AM            
Sunset / PM Twilight   6:37:27 PM   7:04:59 PM            
Length Of Day   12:01:19                          
Special Conditions   None                                  
Comments   Last thunderstorm for this date occurred in 1956  
    September 24, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.3   74.9   72.7   +1.6   79.6   in 1983   67.7   in 1963  
Avg Minimum Temperature   56.8   57.1   57.4   -0.6   63.4   in 1961   52.1   in 1962  
Average Temperature   65.9   66.2   65.0   +0.8   71.5   in 1961   60.6   in 1963  
Total Precipitation   .66   1.10   3.12   -2.46   9.58   in 1960   .31   in 1959  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   56   33   49   +7   118   in 1963   5   in 2015  
Total CDD   77   61   54   +23   170   in 1961   7   in 1893  
Avg Maximum Dew Point   61.3   63.3   60.9   +0.4   67.3   in 2018   55.5   in 1984  
Avg Minimum Dew Point   49.4   53.2   51.8   -2.4   59.0   in 1961   44.8   in 1984  
Average  Dew Point   55.5   58.5   56.3   -0.8   63.3   in 2018   50.2   in 1984  
    September 24, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.69   38.93   34.74   -10.05   48.03   in 1998   17.64   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 20)   56   33   58   -2   118   in 1963   5   in 2015  
Total CDD (since Jan 1)   843   719   552   +291   843   in 2020   283   in 1902  
                             
Hour-by-Hour Weather For September 24, 2020  
Climate Weather for September 24  
Weather History For September 24  
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