Portsmouth Rhode Island Weather Almanac  
Wednesday, December 1, 2021  
Mostly Cloudy early, Clear Day to Partly Cloudy PM, Light Winds and Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    December 1, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   48   62   47   +1   63   in 2006   30   in 1958  
Minimum Temperature   34   42   34   +0   57   in 2006   12   in 1936  
Average Temperature   41   52   40   +1   60   in 2006   22   in 1936  
 Month Avg Max Temperature   48.0   62.0   47.0   +1.0   63.0   in 2006   30.0   in 1958  
Month Avg Min Temperature   34.0   42.0   34.0   +0.0   57.0   in 2006   12.0   in 1936  
Month Average Temperature   41.0   52.0   40.0   +1.0   60.0   in 2006   22.0   in 1936  
High Heat Index                                      
Low Wind Chill   29   35   23   +6             -1   in 1989  
Heating Degree Days   24   13   25   -1   43   in 1936   5   in 2006  
Month HDD   24   13   25   -1   43   in 1936   5   in 2006  
Season HDD   818   806   1015   -197   1340   in 1904   793   in 2011  
Cooling Degree Days   0   0   0   +0       in         in    
Month CDD   0   0   0   +0   0   in         in    
Year Cooling Degree Days   795   871   609   +186   871   in 2020   290   in 1902  
Maximum Dew Point   34   61   40   -6   62   in 2006   10   in 1989  
Minimum Dew Point   27   31   26   +1   55   in 2006   -2   in 2007  
Average  Dew Point   31   46   33   -2   59   in 2006   4   in 1989  
 Month Avg Max Dew Point   34.0   61.0   39.4   -5.4   62.0   in 2006   10.0   in 1989  
Month Avg Min Dew Point   27.0   31.0   24.5   +2.5   55.0   in 2006   -2.0   in 2007  
Month Average Dew Point   31.0   46.0   32.0   -0.9   58.5   in 2006   4.0   in 1989  
Precipitation   .00   .04   .15   -.15   1.64   in 1972            
One Hour   .00   .04           .46   in 1972            
Hourly Rate   .00   .15           5.10   in 2010            
Month Precipitation   .00   .04   .15   -.15   1.64   in 1972   .00   in 2021  
Year Precipitation   45.58   36.92   41.58   +4.00   60.27   in 1983   24.15   in 1957  
Snow   0.0   0.0   0.1   -0.1   0.8   in 2019       in    
Snow Depth   0   0           13   in 1898       in    
Month Snow   0.0   0.0   0.1   -0.1   0.8   in 2019   0.0   in 2021  
Season Snow   T   0.6   0.7   -0.7   19.5   in 1898   0.0   in 2017  
    December 1, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   79%   98%   82%   -3%   100%   in 2013   48%   in 1989  
Minimum Humidity   47%   61%   52%   -5%   92%   in 1977   23%   in 1962  
Average Humidity   63%   80%   67%   -4%   96%   in 2006   39%   in 1989  
Maximum Barometer   30.17   29.79   30.17   -00.00   30.87   in 1993   29.51   in 1997  
Minimum Barometer   29.93   29.52   29.82   +00.11   30.67   in 1993   29.08   in 1972  
Average Barometer   30.05   29.66   30.00   +00.05   30.77   in 1993   29.34   in 1987  
Average Wind   5.3   11.9   8.6   -3.3   20.4   in 1999   1.3   in 1962  
Direction   W   SW   SW       N         WNW        
High Wind Gust   18   38   27   -9   55   in 1957   10   in 1962  
Direction   W   SSE   N       WNW         NE        
Maximum Water Temp   50.2   54.5   49.8   +0.4   54.5   in 2020   44.8   in 2019  
Minimum Water Temp   47.3   53.1   47.3   +0.0   53.1   in 2020   42.1   in 2019  
Average Water Temp   48.8   53.8   48.6   +0.2   53.8   in 2020   43.5   in 2019  
Sunrise/ AM Twilight   6:51:00 AM   6:21:48 AM            
Sunset / PM Twilight   4:17:51 PM   4:47:03 PM            
Length Of Day   9:26:51                          
Special Conditions   None                              
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Hour-by-Hour Weather For December 1, 2021            
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