Portsmouth Rhode Island Weather Almanac  
Tuesday, September 13, 2022  
Cloudy, Heavy Rain, Thunderstorms, Dense Fog, Light Winds and Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    September 13, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   73   81   73   +0   88   in 1952   60   in 1965  
Minimum Temperature   67   62   58   +9   70   in 1971   43   in 1943  
Average Temperature   70   72   65   +5   77   in 1961   55   in 1985  
 Month Avg Max Temperature   76.2   76.0   74.7   +1.5   84.5   in 1983   68.7   in 1917  
Month Avg Min Temperature   60.9   61.2   59.8   +1.2   66.9   in 1961   51.2   in 1893  
Month Average Temperature   68.8   68.9   67.2   +1.5   75.5   in 1961   61.9   in 1893  
High Heat Index   76   80   74   +2   92   in 1952            
Low Wind Chill                             43   in 1985  
Heating Degree Days   0   0   2   -2   10   in 1985   0   in 2022  
Month HDD   2   1   14   -12   48   in 1914   0   in 2015  
Season HDD   2   1   21   -19   48   in 1914   0   in 2015  
Cooling Degree Days   5   7   2   +3   12   in 1961   0   in 2020  
Month CDD   51   52   43   +8   136   in 1961   0   in 1893  
Year CDD   755   735   580   +175   835   in 2020   280   in 1902  
Maximum Dew Point   72   70   63   +9   73   in 1971   45   in 1985  
Minimum Dew Point   67   54   54   +13   68   in 1971   33   in 1985  
Average  Dew Point   70   62   58   +12   71   in 1971   39   in 1985  
 Month Avg Max Dew Point   66.0   66.5   64.6   +1.4   70.4   in 1961   55.3   in 1967  
Month Avg Min Dew Point   57.5   57.0   55.4   +2.1   63.7   in 1961   43.7   in 1967  
Month Average Dew Point   62.1   62.0   59.9   +2.2   67.0   in 1961   49.5   in 1967  
Precipitation   1.51   .00   .12   +1.39   2.42   in 1987            
One Hour   .84   .00           1.52   in 2018            
Hourly Rate   5.43   .00           5.43   in 2022            
Month Precipitation   3.23   7.60   1.50   +1.73   7.60   in 2021   T   in 2005  
Year Precipitation   28.65   36.70   30.78   -2.13   46.33   in 1998   17.36   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 13, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   99%   93%   93%   +6%   100%   in 2018   68%   in 1955  
Minimum Humidity   97%   48%   57%   +40%   97%   in 2022   34%   in 1991  
Average Humidity   98%   71%   75%   +23%   98%   in 2022   52%   in 1955  
Maximum Barometer   29.82   30.04   30.12   -00.30   30.51   in 1985   29.65   in 1960  
Minimum Barometer   29.72   29.91   29.92   -00.20   30.33   in 1992   29.45   in 1960  
Average Barometer   29.77   29.98   30.02   -00.25   30.40   in 2019   29.55   in 1960  
Average Wind   4.1   6.2   5.7   -1.6   12.1   in 1974   1.1   in 2006  
Direction   SSE   NW   S       WSW W
High Wind Gust   19   23   20   -1   35   in 1953   11   in 1998  
Direction   SW   NNW   SSW       SSE NE
Maximum Water Temp   71.4   71.2   69.2   +2.2   72.1   in 1999   65.5   in 2006  
Minimum Water Temp   70.9   69.1   67.1   +3.8   70.9   in 2022   62.9   in 2005  
Average Water Temp   71.2   70.2   68.1   +3.0   71.2   in 2022   64.7   in 2006  
Sunrise/ AM Twilight   6:23:20 AM   5:56:13 AM            
Sunset / PM Twilight   6:57:46 PM   7:25:48 PM            
Length Of Day   12:34:26                          
Special Conditions   Dense Fog, Heavy Thunderstorms                        
Comments   Drought down graded to Moderate  
Hour-by-Hour Weather For September 13, 2022            
Climate Weather for September 13            
Weather History For September 13            
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