Portsmouth Rhode Island Weather Almanac  
Tuesday, August 1, 2023  
Clear to Partly Cloudy PM, Cool and Pleasant  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 1, 2023   Record   Record  
Observed Daily Data   2023   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   77   75   80   -3   91   in 1975   65   in 1905  
Minimum Temperature   60   66   65   -5   74   in 1999   54   in 1965  
Average Temperature   69   71   72   -3   82   in 1975   62   in 1905  
 Month Avg Max Temperature   77.0   75.0   80.0   -3.0   91.0   in 1975   65.0   in 1905  
Month Avg Min Temperature   60.0   66.0   65.0   -5.0   74.0   in 1999   54.0   in 1965  
Month Average Temperature   69.0   71.0   72.0   -3.0   82.0   in 1975   62.0   in 1905  
High Heat Index   77   76   83   -6   102   in 1975            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   3   in 1905   0   in 2023  
Month Heating DD   0   0   0   +0   3   in 1905   0   in 2023  
Season Heating DD   0   0   0   +0   3   in 1905   0   in 2023  
Cooling Degree Days   4   6   7   -3   17   in 1975   0   in 1996  
Month Cooling DD   4   6   8   -4   17   in 1975   0   in 1996  
Year Cooling DD   388   394   336   +52   476   in 2020   135   in 1902  
Maximum Dew Point   62   71   69   -7   79   in 1975   57   in 1964  
Minimum Dew Point   50   64   62   -12   71   in 1979   40   in 1964  
Average  Dew Point   56   68   65   -9   74   in 1975   49   in 1964  
 Month Avg Max Dew Point   62.0   71.0   69.0   -7.0   79.0   in 1975   57.0   in 1964  
Month Avg Min Dew Point   50.0   64.0   62.0   -12.0   71.0   in 1979   40.0   in 1964  
Month Average Dew Point   56.0   68.0   65.0   -9.0   73.5   in 1975   48.5   in 1964  
Precipitation   .00   .15   .11   -.11   1.98   in 1927            
One Hour Rain   .00   .07           .70   in 1950            
Half Hour Rain   .00   .00           .26   in 2011            
Hourly Rain Rate   .00   .20           .70   in 2016            
Month Precipitation   .00   .15   .11   -.11   1.98   in 1927   .00   in 2023  
Year Precipitation   30.25   23.56   25.76   +4.49   41.55   in 1998   14.33   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 1, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   93%   98%   93%   -0%   100%   in 2017   73%   in 1953  
Minimum Humidity   45%   78%   58%   -13%   95%   in 1996   31%   in 1987  
Average Humidity   69%   88%   76%   -7%   98%   in 1996   55%   in 1964  
Maximum Barometer   30.15   30.08   30.04   +00.11   30.37   in 2001   29.71   in 2008  
Minimum Barometer   30.01   29.84   29.85   +00.16   30.25   in 2001   29.44   in 1976  
Average Barometer   30.08   29.96   29.94   +00.14   30.31   in 2001   29.64   in 1976  
Average Wind   5.6   3.9   5.6   +0.0   10.1   in 1984   2.2   in 1996  
Direction   NW   SW   SSW       WSW NNW
High Wind Gust   18   14   21   -3   38   in 1985   11   in 2002  
Direction   NW   SW   SW       N S
Maximum Water Temp   72.9   73.4   72.1   +0.8   77.0   in 2006   65.8   in 1996  
Minimum Water Temp   68.2   70.2   68.7   -0.5   73.1   in 2013   64.2   in 2020  
Average Water Temp   70.6   71.8   70.4   +0.1   73.7   in 2013   65.5   in 1996  
Sunrise/ AM Twilight   5:39:27 AM   4:42:06 AM            
Sunset / PM Twilight   8:02:45 PM   8:56:35 PM            
Length Of Day   14:23:18                          
Special Conditions   None                              
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