Portsmouth Rhode Island Weather Almanac  
Saturday, September 17, 2022  
Clear to Partly Cloudy PM, Continued Cool  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    September 17, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   70   73   72   -2   86   in 1991   57   in 1954  
Minimum Temperature   50   64   57   -7   69   in 1991   43   in 1948  
Average Temperature   60   69   64   -4   78   in 1991   53   in 2013  
 Month Avg Max Temperature   75.2   75.9   74.1   +1.1   81.2   in 1983   68.1   in 1917  
Month Avg Min Temperature   59.5   61.8   59.2   +0.2   64.8   in 1961   52.7   in 1893  
Month Average Temperature   67.5   69.2   66.6   +0.9   73.1   in 1961   61.4   in 1963  
High Heat Index   69   75   71   -2   96   in 1991            
Low Wind Chill                             41   in 1959  
Heating Degree Days   5   0   3   +2   12   in 2013   0   in 2021  
Month HDD   12   1   23   -11   85   in 1913   0   in 2015  
Season HDD   12   1   30   -18   85   in 1913   0   in 2015  
Cooling Degree Days   0   4   2   -2   13   in 1991   0   in 2022  
Month CDD   55   72   51   +4   148   in 1961   7   in 1975  
Year CDD   759   755   588   +171   840   in 2020   280   in 1902  
Maximum Dew Point   59   69   62   -3   72   in 1991   43   in 2013  
Minimum Dew Point   47   62   52   -5   68   in 1991   28   in 1959  
Average  Dew Point   53   66   57   -4   70   in 1991   38   in 1959  
 Month Avg Max Dew Point   64.6   67.3   64.2   +0.5   69.0   in 2018   55.1   in 1975  
Month Avg Min Dew Point   55.3   58.0   54.8   +0.5   60.9   in 2018   44.6   in 1967  
Month Average Dew Point   60.3   62.9   59.4   +0.9   65.2   in 2018   50.1   in 1967  
Precipitation   .00   .07   .14   -.14   2.66   in 1933            
One Hour   .00   .07           .76   in 1995            
Hourly Rate   .00   .41           1.47   in 2005            
Month Precipitation   3.23   8.56   2.05   +1.18   8.56   in 2021   .03   in 1980  
Year Precipitation   28.65   37.66   31.33   -2.68   46.35   in 1998   17.53   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 17, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   90%   99%   93%   -3%   100%   in 2017   67%   in 2000  
Minimum Humidity   52%   88%   61%   -9%   98%   in 1993   28%   in 1968  
Average Humidity   71%   94%   77%   -6%   99%   in 1993   54%   in 1950  
Maximum Barometer   30.30   30.30   30.16   +00.14   30.55   in 1986   29.83   in 1952  
Minimum Barometer   30.17   30.12   29.94   +00.23   30.37   in 2011   29.18   in 1999  
Average Barometer   30.24   30.21   30.05   +00.18   30.43   in 2011   29.52   in 1999  
Average Wind   5.3   5.6   5.4   -0.1   18.9   in 1999   0.9   in 2006  
Direction   SSW   NE   N       WNW SSE
High Wind Gust   14   17   20   -6   50   in 1999   10   in 2006  
Direction   NNE   ENE   NNE       SW S
Maximum Water Temp   69.8   70.5   68.3   +1.5   71.1   in 2015   64.8   in 2013  
Minimum Water Temp   68.4   69.8   66.3   +2.1   69.8   in 2021   61.8   in 2013  
Average Water Temp   69.1   70.2   67.3   +1.8   70.2   in 2021   63.3   in 2013  
Sunrise/ AM Twilight   6:27:23 AM   6:00:23 AM            
Sunset / PM Twilight   6:50:51 PM   7:18:47 PM            
Length Of Day   12:23:28                          
Special Conditions   None                              
Comments   Moderate Drought  
Hour-by-Hour Weather For September 17, 2022            
Climate Weather for September 17            
Weather History For September 17            
Weather Calendar            
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