Portsmouth Rhode Island Weather Almanac  
Saturday, August 26, 2023  
Cloudy, Light Rain & Fog early then Partly Cloudy, Light Winds, Humid & Much Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 26, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   84   85   78   +6   98   in 1948   65   in 1926  
Minimum Temperature   68   68   63   +5   73   in 1900   45   in 1981  
Average Temperature   76   77   70   +6   85   in 1948   59   in 1981  
 Month Avg Max Temperature   78.3   83.3   78.8   -0.5   83.5   in 2020   73.2   in 1964  
Month Avg Min Temperature   63.8   67.1   64.0   -0.3   67.8   in 1939   56.9   in 1964  
Month Average Temperature   71.3   75.5   71.4   -0.1   75.8   in 1939   65.3   in 1964  
High Heat Index   89   95   80   +10   112   in 1948            
Low Wind Chill                             45   in 1981  
Heating Degree Days   0   0   0   +0   6   in 1981   0   in 2023  
Month Heating DD   0   0   0   +0   26   in 1964   0   in 2023  
Season Heating DD   0   0   0   +0   26   in 1964   0   in 2023  
Cooling Degree Days   11   12   5   +6   20   in 1948   0   in 2019  
Month Cooling DD   164   273   181   -17   281   in 1939   35   in 1964  
Year Cooling DD   548   661   509   +39   740   in 2020   225   in 1902  
Maximum Dew Point   74   77   67   +7   79   in 2021   50   in 1989  
Minimum Dew Point   67   65   58   +9   69   in 2021   41   in 1981  
Average  Dew Point   71   71   62   +9   74   in 2021   46   in 1989  
 Month Avg Max Dew Point   68.9   71.3   68.3   +0.6   72.5   in 2021   59.7   in 1964  
Month Avg Min Dew Point   59.5   63.7   60.0   -0.5   64.9   in 2009   49.3   in 1964  
Month Average Dew Point   64.2   67.5   64.1   +0.1   68.4   in 2021   54.5   in 1964  
Precipitation   .03   .29   .11   -.08   4.43   in 1924            
One Hour Rain   .03   .27           1.15   in 1985            
Half Hour Rain   .02   .22           .22   in 2022            
Hourly Rain Rate   .04   1.15           1.15   in 2022            
Month Precipitation   5.09   1.10   3.08   +2.01   11.04   in 1946   .27   in 1993  
Year Precipitation   35.34   24.51   28.73   +6.61   44.74   in 1998   16.49   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 26, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   93%   +6%   100%   in 2002   72%   in 1982  
Minimum Humidity   63%   74%   58%   +5%   94%   in 1958   32%   in 2020  
Average Humidity   81%   87%   75%   +6%   96%   in 1958   53%   in 2020  
Maximum Barometer   29.86   30.02   30.11   -00.25   30.46   in 1991   29.86   in 2023  
Minimum Barometer   29.80   29.88   29.93   -00.13   30.25   in 2012   29.58   in 1988  
Average Barometer   29.83   29.95   30.02   -00.19   30.31   in 2004   29.76   in 1968  
Average Wind   3.7   6.7   5.2   -1.5   9.7   in 1956   1.9   in 1992  
Direction   WNW   SSW   SSW       SW S
High Wind Gust   17   27   20   -3   57   in 1924   10   in 1967  
Direction   SSW   SSW   SSW       ESE SSE
Maximum Water Temp   70.7   74.8   71.3   -0.6   77.0   in 2021   66.0   in 2020  
Minimum Water Temp   68.5   73.2   68.6   -0.1   73.8   in 2021   62.5   in 2003  
Average Water Temp   69.6   74.0   70.0   -0.4   75.4   in 2021   64.9   in 2020  
Sunrise/ AM Twilight   6:04:49 AM   5:03:43 AM            
Sunset / PM Twilight   7:28:14 PM   8:39:52 PM            
Length Of Day   13:23:25                          
Special Conditions   Dense Fog  
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