Portsmouth Rhode Island Weather Almanac  
Friday, September 30, 2022  
Mostly Cloudy early, Partly Cloudy Day to Mostly Cloudy PM, Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    September 30, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   64   63   68   -4   81   in 1922   51   in 1992  
Minimum Temperature   46   52   53   -7   66   in 2010   35   in 1951  
Average Temperature   55   58   61   -6   72   in 1959   45   in 1992  
 Month Avg Max Temperature   72.7   74.8   72.1   +0.6   77.8   in 1961   67.6   in 1963  
Month Avg Min Temperature   57.4   60.4   57.4   -0.0   62.2   in 1961   51.7   in 1956  
Month Average Temperature   65.3   67.9   64.8   +0.5   70.2   in 1961   60.2   in 1963  
High Heat Index   63   61   67   -4   81   in 1952            
Low Wind Chill                             32   in 1951  
Heating Degree Days   10   7   5   +5   20   in 1992   0   in 2020  
Month HDD   57   16   73   -16   181   in 1956   12   in 1921  
Season HDD   57   16   80   -23   181   in 1956   12   in 1921  
Cooling Degree Days   0   0   1   -1   7   in 1959   0   in 2022  
Month CDD   66   103   66   +0   186   in 1961   7   in 1893  
Year CDD   770   786   603   +167   867   in 2020   288   in 1902  
Maximum Dew Point   53   50   60   -7   72   in 2015   31   in 1981  
Minimum Dew Point   43   45   48   -5   65   in 2010   20   in 1981  
Average  Dew Point   48   48   54   -6   68   in 2010   26   in 1981  
 Month Avg Max Dew Point   62.9   66.3   62.8   +0.1   66.8   in 2018   54.6   in 1984  
Month Avg Min Dew Point   53.1   56.5   52.9   +0.2   57.6   in 2018   44.1   in 1984  
Month Average Dew Point   58.3   61.6   57.8   +0.5   62.5   in 2018   49.4   in 1984  
Precipitation   .00   .01   .14   -.14   1.84   in 2015            
One Hour   .00   .01           .84   in 2015            
Hourly Rate   .00   .00           3.08   in 2015            
Month Precipitation   4.39   10.00   3.80   +.59   10.67   in 1961   .31   in 1959  
Year Precipitation   29.81   39.10   33.08   -3.27   48.49   in 1998   17.64   in 1957  
Snow   #N/A   #N/A   0.0   #N/A       in         in    
Snow Depth   #N/A   #N/A               in         in    
Month Snow   0.0   0.0   0.0   +0.0       in         in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    September 30, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   94%   91%   93%   +1%   100%   in 2010   67%   in 1981  
Minimum Humidity   61%   55%   58%   +3%   93%   in 2014   25%   in 1981  
Average Humidity   78%   73%   75%   +2%   95%   in 2014   46%   in 1981  
Maximum Barometer   30.35   30.12   30.13   +00.22   30.59   in 1945   29.53   in 1997  
Minimum Barometer   30.18   29.98   29.91   +00.27   30.38   in 2007   29.29   in 1972  
Average Barometer   30.27   30.05   30.02   +00.24   30.46   in 2007   29.43   in 1997  
Average Wind   5.3   6.3   6.7   -1.4   18.7   in 2001   2.5   in 2008  
Direction   ENE   NNW   SW       NNE SE
High Wind Gust   17   26   22   -5   51   in 2020   11   in 1970  
Direction   ENE   NNW   S       S WNW
Maximum Water Temp   65.3   67.8   65.8   -0.5   68.5   in 2015   62.0   in 2010  
Minimum Water Temp   64.6   66.7   64.2   +0.4   67.5   in 2015   60.3   in 2001  
Average Water Temp   65.0   67.3   65.0   -0.1   68.0   in 2015   61.3   in 2001  
Sunrise/ AM Twilight   6:40:49 AM   6:13:55 AM            
Sunset / PM Twilight   6:28:27 PM   6:56:15 PM            
Length Of Day   11:47:38                          
Special Conditions   None                              
Comments   Moderate  Drought  
Hour-by-Hour Weather For September 30, 2022            
Climate Weather for September 30            
Weather History For September 30            
Weather Calendar            
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