Portsmouth Rhode Island Weather Almanac  
Tuesday, September 26, 2023  
Cloudy, Light Rain AM,  to Partly Cloudy PM, Continued Windy and Cool  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    September 26, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   59   70   69   -10   86   in 1920   55   in 2000  
Minimum Temperature   48   59   55   -7   69   in 2018   41   in 1956  
Average Temperature   54   65   62   -8   76   in 1930   50   in 1956  
 Month Avg Max Temperature   75.5   73.5   72.7   +2.7   78.8   in 1961   67.3   in 1963  
Month Avg Min Temperature   61.7   58.3   58.0   +3.7   63.6   in 1961   52.1   in 1962  
Month Average Temperature   68.8   66.1   65.3   +3.5   71.3   in 1961   60.2   in 1963  
High Heat Index   59   71   70   -11   91   in 1958            
Low Wind Chill   47                         37   in 1956  
Heating Degree Days   11   0   4   +7   15   in 1956   0   in 2022  
Month Heating DD   36   37   53   -17   143   in 1956   2   in 2021  
Season Heating DD   36   37   53   -17   174   in 1956   2   in 2021  
Cooling Degree Days   0   0   1   -1   11   in 1930   0   in 2023  
Month Cooling DD   136   66   62   +74   180   in 1961   7   in 1893  
Year Cooling DD   708   777   599   +109   850   in 2020   283   in 1902  
Maximum Dew Point   57   65   61   -4   74   in 2018   40   in 1966  
Minimum Dew Point   47   58   50   -3   69   in 2018   14   in 1957  
Average  Dew Point   52   62   55   -3   72   in 2018   31   in 1957  
 Month Avg Max Dew Point   67.5   64.0   63.2   +4.3   67.7   in 2018   55.2   in 1966  
Month Avg Min Dew Point   59.4   54.1   53.5   +5.9   59.4   in 2023   44.9   in 1967  
Month Average Dew Point   63.7   59.3   58.3   +5.3   63.7   in 2023   50.3   in 1967  
Precipitation   .04   .38   .14   -.10   2.53   in 2008            
One Hour Rain   .03   .26           .98   in 1992            
Half Hour Rain   .02   .20           .29   in 2008            
Hourly Rain Rate   .02   6.70           6.70   in 2022            
Month Precipitation   5.31   4.39   3.24   +2.07   10.67   in 1961   .31   in 1959  
Year Precipitation   40.93   29.81   32.52   +8.41   48.03   in 1998   17.64   in 1957  
Snow                                      
Snow Depth                                      
Month Snow                                      
Season Snow   0.0   0.0   0.0   +0.0   0.0   in 1996   0.0   in 1998  
    September 26, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   97%   99%   94%   +3%   100%   in 2018   74%   in 1987  
Minimum Humidity   81%   72%   60%   +21%   93%   in 1975   24%   in 1957  
Average Humidity   89%   86%   77%   +12%   96%   in 1975   53%   in 1951  
Maximum Barometer   30.37   29.79   30.15   +00.22   30.57   in 1925   29.79   in 2022  
Minimum Barometer   30.25   29.57   29.91   +00.34   30.35   in 2015   29.30   in 1991  
Average Barometer   30.31   29.68   30.03   +00.28   30.42   in 2015   29.57   in 1991  
Average Wind   11.3   7.3   5.9   +5.4   13.4   in 2000   2.1   in 2011  
Direction   NE   SSW   SSW       NE SW
High Wind Gust   23   29   21   +2   38   in 1984   10   in 1971  
Direction   NE   S   S       WNW SW
Maximum Water Temp   67.1   71.2   66.9   +0.2   71.2   in 2021   63.7   in 1996  
Minimum Water Temp   65.8   70.2   65.1   +0.7   70.2   in 2021   61.7   in 2000  
Average Water Temp   66.5   70.7   66.0   +0.4   70.7   in 2021   62.9   in 1996  
Sunrise/ AM Twilight   6:36:23 AM   6:09:45 AM            
Sunset / PM Twilight   6:35:43 PM   7:03:06 PM            
Length Of Day   11:59:20                          
Special Conditions   None                                  
Comments   Remnants Of TS Ophelia  
Hour-by-Hour Weather For September 26, 2023            
Climate Weather for September 26            
Weather History For September 26            
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