Portsmouth Rhode Island Weather Almanac  
Thursday, October 28, 2021  
Cloudy, Windy and Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    October 28, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   50   53   58   -8   73   in 1927   44   in 2005  
Minimum Temperature   45   46   44   +1   59   in 1953   27   in 1914  
Average Temperature   48   50   51   -3   64   in 1977   36   in 1976  
 Month Avg Max Temperature   67.0   64.9   62.4   +4.6   68.9   in 1947   55.2   in 1896  
Month Avg Min Temperature   53.3   50.3   47.9   +5.4   53.6   in 2017   40.7   in 1974  
Month Average Temperature   60.4   57.9   55.3   +5.1   61.4   in 2017   49.0   in 1896  
High Heat Index                   73   in 1927            
Low Wind Chill   38                         23   in 1976  
HDD   17   15   14   +3   29   in 1976   1   in 1977  
Month HDD   137   203   271   -134   447   in 1896   122   in 1920  
Season HDD   162   259   351   -189   558   in 1896   159   in 1920  
CDD   0   0   0   +0   0   in     0   in    
Month CDD   9   4   6   +3   48   in 1954   0   in 2015  
Year CDD   795   871   609   +186   871   in 2020   290   in 1902  
Maximum Dew Point   45   52   48   -3   65   in 1971   27   in 1976  
Minimum Dew Point   41   40   36   +5   59   in 1953   10   in 1974  
Average  Dew Point   43   46   42   +1   61   in 1971   22   in 1965  
 Month Avg Max Dew Point   58.4   57.2   53.6   +4.8   60.1   in 2007   42.4   in 1974  
Month Avg Min Dew Point   49.6   45.1   41.7   +8.0   49.6   in 2021   29.3   in 1974  
Month Average Dew Point   54.2   51.4   47.6   +6.6   54.5   in 2017   35.8   in 1974  
Precipitation   .00   .24   .14   -.14   2.77   in 1987            
One Hour   .00   .06           .48   in 1987            
Hourly Rate   .00   .09           .81   in 2009            
Month Precipitation   3.31   3.90   3.87   -.56   9.91   in 2005   .05   in 1947  
Year Precipitation   42.41   29.16   36.95   +5.46   51.92   in 1998   20.15   in 1957  
Snow   0.0   0.0   0.0   +0.0   T   in 1903       in    
Snow Depth   0   0   0       0   in         in    
Month Snow   0.0   0.0   0.0   -0.0   0.7   in 1979       in    
Season Snow   0.0   0.0   0.0   -0.0   0.7   in 1979       in    
    October 28, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   92%   96%   90%   +2%   100%   in 2018   60%   in 1965  
Minimum Humidity   75%   72%   56%   +19%   91%   in 2009   31%   in 1985  
Average Humidity   84%   84%   73%   +10%   94%   in 1953   46%   in 1965  
Maximum Barometer   30.00   30.16   30.13   -00.13   30.56   in 1946   29.67   in 1968  
Minimum Barometer   29.81   29.91   29.83   -00.02   30.29   in 1956   29.07   in 2006  
Average Barometer   29.91   30.04   29.98   -00.07   30.39   in 1956   29.45   in 2008  
Average Wind   11.1   4.5   7.6   +3.5   16.6   in 1962   2.5   in 1975  
Direction   NNE   NW   SW       SW         SSE        
High Wind Gust   30   15   25   +5   46   in 2006   11   in 1975  
Direction   NNE   NW   SW       SE         S        
Maximum Water Temp   60.6   60.6   58.5   +2.1   62.0   in 2017   53.8   in 2018  
Minimum Water Temp   59.5   58.8   56.7   +2.8   59.9   in 2007   53.1   in 2018  
Average Water Temp   60.1   59.7   57.6   +2.4   60.9   in 2007   53.5   in 2018  
Sunrise/ AM Twilight   7:11:18 AM   6:44:15 AM            
Sunset / PM Twilight   5:46:42 PM   6:13:45 PM            
Length Of Day   10:35:24                          
Special Conditions   None                              
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