Portsmouth Rhode Island Weather Almanac  
Tuesday, October 19, 2021  
Clear, Windy with Seasonal Temperatures  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    October 19, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   63   64   61   +2   77   in 2016   42   in 1972  
Minimum Temperature   45   45   46   -1   63   in 2007   29   in 1922  
Average Temperature   54   55   54   +0   68   in 2016   38   in 1974  
 Month Avg Max Temperature   68.8   65.9   64.0   +4.8   71.4   in 1990   55.2   in 1896  
Month Avg Min Temperature   54.5   49.9   49.4   +5.2   54.6   in 2011   39.8   in 1981  
Month Average Temperature   61.9   58.3   56.9   +5.1   63.0   in 1990   49.9   in 1981  
High Heat Index                   79   in 2016            
Low Wind Chill   39                         27   in 2015  
HDD   11   10   11   +0   27   in 1974   0   in 2016  
Month HDD   67   129   154   -87   287   in 1981   66   in 1990  
Season HDD   92   185   234   -142   435   in 1956   92   in 2021  
CDD   0   0   0   +0   3   in 2016   0   in    
Month CDD   9   1   6   +3   48   in 1954   0   in 2015  
Year CDD   795   868   609   +186   868   in 2020   290   in 1902  
Maximum Dew Point   45   53   52   -7   68   in 2016   20   in 1974  
Minimum Dew Point   37   43   40   -3   62   in 2007   10   in 1959  
Average  Dew Point   41   48   46   -5   64   in 2007   17   in 1959  
 Month Avg Max Dew Point   59.8   56.8   55.4   +4.4   60.7   in 1990   44.6   in 1981  
Month Avg Min Dew Point   51.9   44.7   43.5   +8.5   51.9   in 2021   31.8   in 1981  
Month Average Dew Point   56.1   51.0   49.4   +6.7   56.1   in 2021   38.2   in 1981  
Precipitation   .00   .00   .14   -.14   2.00   in 1928            
One Hour   .00   .00           .36   in 2011            
Hourly Rate   .00   .00           4.09   in 2007            
Month Precipitation   1.50   3.25   2.66   -1.16   8.13   in 2005   .01   in 1963  
Year Precipitation   40.60   28.51   35.74   +4.86   51.27   in 1998   19.78   in 1957  
Snow   0.0   0.0   0.0   +0.0   T   in 1972       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 19, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   83%   95%   90%   -7%   100%   in 2004   62%   in 1959  
Minimum Humidity   40%   63%   56%   -16%   93%   in 2007   24%   in 1959  
Average Humidity   62%   79%   73%   -12%   97%   in 1968   43%   in 1959  
Maximum Barometer   29.91   30.43   30.14   -00.23   30.63   in 1985   29.73   in 1952  
Minimum Barometer   29.80   30.31   29.88   -00.08   30.31   in 2020   29.33   in 1967  
Average Barometer   29.86   30.37   30.01   -00.15   30.42   in 1985   29.57   in 1967  
Average Wind   9.3   2.8   6.7   +2.6   14.6   in 1975   1.7   in 1955  
Direction   WNW   ENE   SW       NE         NW        
High Wind Gust   28   12   23   +5   41   in 1967   10   in 1955  
Direction   WNW   SSE   SW       S         NW        
Maximum Water Temp   62.4   64.2   60.8   +1.7   64.4   in 2014   56.3   in 2009  
Minimum Water Temp   61.2   61.7   59.1   +2.2   63.2   in 2007   53.6   in 2009  
Average Water Temp   61.8   63.0   59.9   +1.9   63.4   in 2016   55.0   in 2009  
Sunrise/ AM Twilight   7:00:50 AM   6:34:13 AM            
Sunset / PM Twilight   5:59:26 PM   6:26:03 PM            
Length Of Day   10:58:36                          
Special Conditions   None                              
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