Portsmouth Rhode Island Weather Almanac  
Monday, February 13, 2023  
Cloudy & Light Rain early, Partly Cloudy Day to Mostly Cloudy PM, Windy, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    February 13, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   47   39   39   +8   55   in 1951   13   in 1979  
Minimum Temperature   35   25   25   +10   39   in 1937   -2   in 1917  
Average Temperature   41   32   32   +9   46   in 1951   8   in 1979  
 Month Avg Max Temperature   42.7   42.8   38.2   +4.5   45.2   in 1991   22.9   in 1899  
Month Avg Min Temperature   24.3   26.9   24.1   +0.2   33.5   in 2020   8.8   in 1934  
Month Average Temperature   33.8   35.2   31.5   +2.2   39.3   in 2020   17.0   in 1979  
High Heat Index                                      
Low Wind Chill   29   13   8   +21             -23   in 2016  
Heating Degree Days   24   33   33   -9   57   in 1979   19   in 1951  
Month HDD   406   388   435   -29   624   in 1979   334   in 2020  
Season HDD   2900   3085   3354   -454   4306   in 1918   2713   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   38   28   30   +8   51   in 2008   -7   in 1979  
Minimum Dew Point   30   20   13   +17   33   in 1951   -21   in 1967  
Average  Dew Point   34   24   22   +12   40   in 1971   -11   in 1954  
 Month Avg Max Dew Point   33.5   37.4   29.1   +4.5   38.2   in 2020   6.1   in 1979  
Month Avg Min Dew Point   12.8   19.9   12.5   +0.4   26.6   in 2020   -5.4   in 1979  
Month Average Dew Point   23.3   28.7   22.0   +1.3   32.4   in 2020   0.3   in 1979  
Precipitation   .12   .34   .12   +.00   1.96   in 2008            
One Hour   .04   .00           .44   in 2008            
Hourly Rate   .06   .00           1.35   in 2008            
Month Precipitation   .20   2.91   1.52   -1.32   4.98   in 1970   T   in 1912  
Year Precipitation   7.39   4.87   5.19   +2.20   12.38   in 1979   1.28   in 2007  
Snow   0.0   4.9   0.4   -0.4   10.4   in 1894       in    
Snow Depth   0   0           26   in 1978       in    
Month Snow   T   5.2   4.4   -4.4   26.3   in 1978   0.0   in 2020  
Season Snow   2.3   29.9   21.5   -19.2   54.3   in 1894   2.3   in 2023  
    February 13, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   91%   92%   81%   +10%   100%   in 2008   42%   in 1952  
Minimum Humidity   66%   54%   48%   +18%   93%   in 1984   21%   in 2007  
Average Humidity   79%   73%   65%   +14%   96%   in 2008   38%   in 2007  
Maximum Barometer   29.79   30.20   30.11   -00.32   31.02   in 1981   29.45   in 1993  
Minimum Barometer   29.55   29.95   29.75   -00.20   30.81   in 1981   28.97   in 2014  
Average Barometer   29.67   30.08   29.93   -00.26   30.92   in 1981   29.28   in 1993  
Average Wind   9.7   8.3   8.6   +1.1   18.5   in 1988   2.2   in 1983  
Direction   NNE   NNW   WNW       W S
High Wind Gust   31   25   27   +4   59   in 1899   13   in 1978  
Direction   N   NNW   WNW       N WNW
Maximum Water Temp   42.6   40.8   38.2   +4.4   42.6   in 2023   34.0   in 2015  
Minimum Water Temp   40.8   38.3   36.1   +4.7   40.8   in 2023   31.9   in 2003  
Average Water Temp   41.7   39.6   37.2   +4.5   41.7   in 2023   33.0   in 2015  
Sunrise/ AM Twilight   6:43:07 AM   6:12:55 AM            
Sunset / PM Twilight   5:15:53 PM   5:45:51 PM            
Length Of Day   10:32:46                          
Special Conditions   None                              
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