Portsmouth Rhode Island Weather Almanac  
Monday, August 7, 2023  
Partly Cloudy early, Cloudy, Light Rain Day to Mostly Cloudy PM, Continued Cool  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 7, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   75   87   79   -4   92   in 1931   67   in 1928  
Minimum Temperature   65   74   65   +0   74   in 2022   52   in 1957  
Average Temperature   70   81   72   -2   81   in 2022   62   in 2004  
 Month Avg Max Temperature   77.9   85.0   79.7   -1.9   87.0   in 1955   71.1   in 1903  
Month Avg Min Temperature   62.3   70.7   65.0   -2.7   71.4   in 1988   55.4   in 1964  
Month Average Temperature   70.3   78.1   72.0   -1.7   78.1   in 2022   64.3   in 1964  
High Heat Index   77   98   81   -4   104   in 1931            
Low Wind Chill                                 in #N/A  
Heating Degree Days   0   0   0   +0   3   in 2004   0   in 2023  
Month Heating DD   0   0   0   +0   11   in 1903   0   in 2023  
Season Heating DD   0   0   0   +0   11   in 1903   0   in 2023  
Cooling Degree Days   5   16   7   -2   16   in 2022   0   in 2004  
Month Cooling DD   37   92   56   -19   92   in 2022   5   in 1964  
Year Cooling DD   421   480   384   +37   549   in 2020   181   in 1902  
Maximum Dew Point   71   77   69   +2   77   in 2022   55   in 1991  
Minimum Dew Point   63   72   61   +2   72   in 2022   43   in 1957  
Average  Dew Point   67   75   65   +2   75   in 2022   50   in 1957  
 Month Avg Max Dew Point   65.9   75.4   69.0   -3.1   75.4   in 2022   57.4   in 1964  
Month Avg Min Dew Point   57.1   68.0   61.4   -4.3   69.1   in 2003   48.9   in 1964  
Month Average Dew Point   61.5   71.7   65.0   -3.5   71.9   in 2018   53.1   in 1964  
Precipitation   .04   .00   .12   -.08   4.87   in 1946            
One Hour Rain   .02   .00           .56   in 1978            
Half Hour Rain   .02   .00           .26   in 2011            
Hourly Rain Rate   .04   .00           1.77   in 2011            
Month Precipitation   .04   .15   .83   -.79   6.40   in 1946   .00   in 1998  
Year Precipitation   30.29   23.56   26.48   +3.81   41.55   in 1998   14.69   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  
    August 7, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   99%   93%   +5%   100%   in 2011   74%   in 1979  
Minimum Humidity   84%   74%   58%   +26%   93%   in 1976   33%   in 1957  
Average Humidity   91%   87%   76%   +15%   96%   in 1976   57%   in 1979  
Maximum Barometer   30.00   30.19   30.05   -00.05   30.39   in 1992   29.74   in 1954  
Minimum Barometer   29.82   30.05   29.85   -00.03   30.27   in 1998   29.35   in 1989  
Average Barometer   29.91   30.12   29.95   -00.04   30.32   in 1998   29.60   in 1989  
Average Wind   6.6   9.3   5.7   +0.9   12.4   in 1962   2.1   in 1998  
Direction   SSE   SSW   SSW       SSW SSE
High Wind Gust   21   32   20   +1   45   in 1955   9   in 1998  
Direction   SSW   WSW   SSW       SSW SE
Maximum Water Temp   71.1   76.1   71.9   -0.8   76.1   in 2022   67.8   in 2020  
Minimum Water Temp   69.6   73.9   69.2   +0.4   73.9   in 2022   64.4   in 2001  
Average Water Temp   70.4   75.0   70.5   -0.2   75.0   in 2022   67.1   in 2004  
Sunrise/ AM Twilight   5:45:26 AM   4:46:07 AM            
Sunset / PM Twilight   7:55:36 PM   8:54:37 PM            
Length Of Day   14:10:10                          
Special Conditions   None                              
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