Portsmouth Rhode Island Weather Almanac  
Friday, October 1, 2021  
Clear early, Partly Cloudy Day to Clear PM, Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    October 1, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   66   72   68   -2   84   in 1927   51   in 1992  
Minimum Temperature   49   60   53   -4   67   in 1986   34   in 1992  
Average Temperature   58   66   60   -2   74   in 1986   43   in 1992  
 Month Avg Max Temperature   66.0   72.0   68.0   -2.0   84.0   in 1927   51.0   in 1992  
Month Avg Min Temperature   49.0   60.0   53.0   -4.0   67.0   in 1986   34.0   in 1992  
Month Average Temperature   58.0   66.0   60.0   -2.0   74.0   in 1986   43.0   in 1992  
High Heat Index       72           86   in 1954            
Low Wind Chill                             34   in 1992  
HDD   7   0   5   +2   22   in 1992   0   in 2020  
Month HDD   7   0   5   +2   22   in 1992   0   in 2020  
Season HDD   32   56   85   -53   222   in 1956   23   in 1921  
CDD   0   1   1   -1   9   in 1986   0   in    
Month CDD   0   1   1   -1   9   in 1986   0   in 2021  
Year CDD   786   868   604   +182   868   in 2020   288   in 1902  
Maximum Dew Point   52   64   59   -7   71   in 2010   35   in 1992  
Minimum Dew Point   44   55   47   -3   64   in 1959   22   in 1992  
Average  Dew Point   48   60   53   -5   68   in 1959   29   in 1992  
 Month Avg Max Dew Point   52.0   64.0   59.0   -7.0   71.0   in 2010   35.0   in 1992  
Month Avg Min Dew Point   44.0   55.0   47.0   -3.0   64.0   in 1959   22.0   in 1992  
Month Average Dew Point   48.0   60.0   53.0   -5.0   67.5   in 1959   28.5   in 1992  
Precipitation   .00   .00   .14   -.14   1.93   in 1984            
One Hour   .00   .00           .57   in 2006            
Hourly Rate   .00   .00           4.57   in 2011            
Month Precipitation   .00   .00   .14   -.14   1.93   in 1984   .00   in 2021  
Year Precipitation   39.10   25.26   33.22   +5.88   48.53   in 1998   17.64   in 1957  
Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A            
Snow Depth   #N/A   #N/A           #N/A   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    October 1, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   88%   92%   93%   -5%   100%   in 2005   73%   in 1986  
Minimum Humidity   49%   72%   58%   -9%   96%   in 2014   23%   in 1953  
Average Humidity   69%   82%   76%   -7%   97%   in 2014   54%   in 1997  
Maximum Barometer   30.20   29.96   30.13   +00.07   30.55   in 2007   29.76   in 2011  
Minimum Barometer   30.03   29.88   29.89   +00.14   30.44   in 2007   29.24   in 1987  
Average Barometer   30.12   29.92   30.01   +00.11   30.50   in 2007   29.52   in 1987  
Average Wind   5.0   8.8   6.4   -1.4   14.2   in 1984   1.8   in 2005  
Direction   NW   SW   S       NE         S        
High Wind Gust   17   27   22   -5   42   in 1958   10   in 2004  
Direction   NNW   SW   S       SSW         NNW        
Maximum Water Temp   66.9   67.3   65.6   +1.3   68.3   in 2011   61.7   in 2001  
Minimum Water Temp   65.7   64.6   63.8   +1.9   67.4   in 2011   59.9   in 2001  
Average Water Temp   66.3   66.0   64.7   +1.6   67.8   in 2011   60.8   in 2001  
Sunrise/ AM Twilight   6:41:09 AM   6:14:58 AM            
Sunset / PM Twilight   6:28:23 PM   6:54:34 PM            
Length Of Day   11:47:14                          
Special Conditions   None                              
Comments                                      
Hour-by-Hour Weather For October 1, 2021            
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