Portsmouth Rhode Island Weather Almanac  
Saturday, October 7, 2023  
Cloudy, Light Rain, Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    October 7, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   68   73   65   +3   82   in 1946   47   in 1911  
Minimum Temperature   56   58   50   +6   67   in 2005   34   in 1954  
Average Temperature   62   66   58   +4   71   in 2005   44   in 1954  
 Month Avg Max Temperature   73.6   61.1   66.3   +7.3   77.0   in 1927   56.9   in 1899  
Month Avg Min Temperature   55.6   53.1   51.4   +4.1   60.3   in 1927   40.4   in 1992  
Month Average Temperature   64.9   57.4   59.0   +5.9   68.9   in 1927   50.1   in 1992  
High Heat Index                   83   in 1946            
Low Wind Chill                             30   in 1954  
Heating Degree Days   3   0   7   -4   21   in 1954   0   in Many  
Month Heating DD   14   54   42   -28   104   in 1992   1   in 1927  
Season Heating DD   75   54   42   +33   284   in 1956   48   in 1921  
Cooling Degree Days   0   1   0   -0   6   in 2005   0   in Many  
Month Cooling DD   13   1   6   +7   28   in 1927   0   in 2016  
Year Cooling DD   721   771   609   +112   868   in 2020   290   in 1902  
Maximum Dew Point   66   64   57   +9   70   in 2018   33   in 1986  
Minimum Dew Point   55   52   45   +10   66   in 2005   22   in 1954  
Average  Dew Point   61   58   51   +10   68   in 2005   29   in 1986  
 Month Avg Max Dew Point   64.9   56.1   57.9   +7.0   65.1   in 2007   42.0   in 1984  
Month Avg Min Dew Point   54.7   48.4   46.0   +8.7   55.4   in 2007   27.7   in 1965  
Month Average Dew Point   60.0   52.4   51.9   +8.1   60.3   in 2007   35.1   in 1984  
Precipitation   .15   .00   .14   +.01   2.54   in 1956            
One Hour Rain   .08   .00           1.30   in 1956            
Half Hour Rain   .05   .00           .07   in 2009            
Hourly Rain Rate   .29   .00           3.49   in 2009            
Month Precipitation   .15   1.61   .98   -.83   5.76   in 1962   .00   in 2005  
Year Precipitation   42.25   31.42   34.06   +8.19   48.53   in 1998   18.60   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  
    October 7, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   98%   90%   +8%   100%   in 2017   62%   in 1954  
Minimum Humidity   91%   69%   57%   +34%   94%   in 1959   28%   in 1992  
Average Humidity   95%   84%   74%   +21%   97%   in 1959   49%   in 1963  
Maximum Barometer   29.96   29.98   30.14   -00.18   30.55   in 1984   29.51   in 1962  
Minimum Barometer   29.43   29.88   29.91   -00.47   30.36   in 2011   28.94   in 1972  
Average Barometer   29.70   29.93   30.02   -00.33   30.46   in 1984   29.26   in 1972  
Average Wind   6.5   5.5   6.8   -0.3   15.9   in 1962   1.5   in 2016  
Direction   E   SW   SW       WNW SE
High Wind Gust   21   21   23   -2   45   in 2020   10   in 2016  
Direction   WNW   NW   WNW       NW SSE
Maximum Water Temp   66.2   64.6   64.5   +1.7   68.9   in 2005   59.6   in 2010  
Minimum Water Temp   65.1   63.0   62.5   +2.6   66.2   in 2021   57.9   in 1998  
Average Water Temp   65.7   63.8   63.5   +2.2   67.1   in 2005   59.0   in 2010  
Sunrise/ AM Twilight   6:48:01 AM   6:21:17 AM            
Sunset / PM Twilight   6:17:07 PM   6:44:36 PM            
Length Of Day   11:28:26                          
Special Conditions   Fog                                  
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