Portsmouth Rhode Island Weather Almanac  
Wednesday, October 13, 2021  
Clear, Morning Fog to Partly Cloudy PM, Light Winds and Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    October 13, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   73   64   63   +10   79   in 1954   45   in 1934  
Minimum Temperature   55   53   48   +7   66   in 1990   30   in 1956  
Average Temperature   64   59   56   +8   71   in 1954   41   in 1934  
 Month Avg Max Temperature   69.1   66.3   65.2   +3.9   72.2   in 1990   55.8   in 1896  
Month Avg Min Temperature   54.6   51.2   50.4   +4.2   56.6   in 1961   40.3   in 1956  
Month Average Temperature   62.2   59.1   58.0   +4.2   63.9   in 1990   49.8   in 1981  
High Heat Index   0   0           81   in 1954            
Low Wind Chill   0   0                     29   in 1956  
HDD   1   6   9   -8   24   in 1934   0   in 1990  
Month HDD   40   78   91   -51   198   in 1981   31   in 1961  
Season HDD   65   134   171   -106   389   in 1956   61   in 1961  
CDD   0   0   0   +0   6   in 1954   0   in    
Month CDD   3   1   6   -3   42   in 1954   0   in 2016  
Year CDD   789   868   609   +180   868   in 2020   290   in 1902  
Maximum Dew Point   65   63   54   +11   70   in 1983   33   in 1958  
Minimum Dew Point   55   51   42   +13   65   in 1990   20   in 1980  
Average  Dew Point   60   57   48   +12   67   in 1990   29   in 1980  
 Month Avg Max Dew Point   60.3   57.7   56.6   +3.7   64.2   in 2018   43.5   in 1981  
Month Avg Min Dew Point   52.8   44.9   44.7   +8.2   54.6   in 2005   32.5   in 1956  
Month Average Dew Point   56.8   51.6   50.6   +6.2   59.1   in 2018   38.2   in 1981  
Precipitation   .00   1.31   .14   -.14   3.12   in 1895            
One Hour   .00   .30           .54   in 1990            
Hourly Rate   .00   1.84           3.16   in 2011            
Month Precipitation   1.25   1.73   1.82   -.57   5.83   in 1962   .00   in 1930  
Year Precipitation   40.35   26.99   34.90   +5.45   50.80   in 1998   18.73   in 1957  
Snow   0.0   0.0   0.0   +0.0   0.0   in         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 13, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   90%   +9%   100%   in 2002   70%   in 2012  
Minimum Humidity   68%   87%   55%   +13%   94%   in 1990   27%   in 1963  
Average Humidity   84%   93%   72%   +11%   97%   in 1990   51%   in 1963  
Maximum Barometer   30.05   30.12   30.16   -00.11   30.64   in 1942   29.70   in 2004  
Minimum Barometer   29.93   29.75   29.92   +00.01   30.35   in 2017   29.40   in 1950  
Average Barometer   29.99   29.94   30.04   -00.05   30.43   in 2012   29.56   in 1950  
Average Wind   3.6   8.2   6.1   -2.5   13.6   in 1984   2.1   in 1997  
Direction   SW   ENE   SW       NNE         SSE        
High Wind Gust   15   24   21   -6   35   in 1984   12   in 2004  
Direction   SW   SSE   NW       NE         S        
Maximum Water Temp   63.0   67.8   62.6   +0.4   67.8   in 2021   59.2   in 1996  
Minimum Water Temp   61.5   66.2   61.0   +0.5   66.2   in 2021   56.5   in 2012  
Average Water Temp   62.3   67.0   61.8   +0.4   67.0   in 2021   58.6   in 2012  
Sunrise/ AM Twilight   6:54:06 AM   6:27:42 AM            
Sunset / PM Twilight   6:08:40 PM   6:35:04 PM            
Length Of Day   11:14:34                          
Special Conditions   Dense Fog                              
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