Portsmouth Rhode Island Weather Almanac  
Sunday, April 9, 2023  
Partly Cloudy early then Clear, Continued Cool  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    April 9, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   50   55   53   -3   78   in 1991   37   in 1997  
Minimum Temperature   35   43   38   -3   50   in 1991   22   in 1977  
Average Temperature   43   49   46   -3   64   in 1991   31   in 1917  
 Month Avg Max Temperature   53.2   54.4   51.7   +1.6   63.3   in 2010   40.4   in 2003  
Month Avg Min Temperature   38.2   39.6   36.6   +1.7   44.8   in 2010   27.2   in 1982  
Month Average Temperature   46.0   47.1   44.4   +1.6   54.2   in 2010   36.1   in 1982  
High Heat Index                                      
Low Wind Chill   30   41   29   +1             9   in 1977  
Heating Degree Days   22   16   19   +3   34   in 1917   1   in 1991  
Month HDD   171   161   185   -14   260   in 1982   97   in 2010  
Season HDD   4238   4461   4835   -597   5865   in 1918   4023   in 2012  
Cooling Degree Days   0   #N/A   0   +0   0   in     0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   31   48   41   -10   63   in 1991   14   in 1977  
Minimum Dew Point   21   38   27   -6   45   in 1991   5   in 1977  
Average  Dew Point   26   43   34   -8   54   in 1991   10   in 1977  
 Month Avg Max Dew Point   44.4   44.0   39.6   +4.9   52.1   in 2010   25.1   in 1965  
Month Avg Min Dew Point   26.2   31.4   26.0   +0.2   40.1   in 2010   10.0   in 1982  
Month Average Dew Point   35.3   37.7   32.8   +2.6   46.1   in 2010   19.3   in 1982  
Precipitation   .00   .01   .14   -.14   2.33   in 1897            
One Hour   .00   .01           .27   in 1974            
Hourly Rate   .00   .00           4.92   in 2020            
Month Precipitation   .70   1.58   1.33   -.63   4.20   in 1957   .00   in 1925  
Year Precipitation   14.20   14.48   12.79   +1.41   21.98   in 1903   6.44   in 2012  
Snow   0.0   0.0   0.0   +0.0   8.0   in 1917       in    
Snow Depth   0   0           5   in 1982       in    
Month Snow   0.0   0.0   0.5   -0.5   8.0   in 1982   0.0   in 2023  
Season Snow   9.1   34.2   33.5   -24.4   80.5   in 1996   5.0   in 1998  
    April 9, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   85%   92%   84%   +1%   100%   in 2021   51%   in 1977  
Minimum Humidity   35%   64%   45%   -10%   92%   in 1974   15%   in 1968  
Average Humidity   60%   78%   65%   -5%   95%   in 1974   39%   in 1977  
Maximum Barometer   30.55   29.71   30.03   +00.52   30.55   in 2023   29.61   in 2020  
Minimum Barometer   30.45   29.56   29.75   +00.70   30.45   in 2023   28.87   in 1907  
Average Barometer   30.50   29.64   29.89   +00.61   30.50   in 2023   29.33   in 2020  
Average Wind   5.8   8.1   8.2   -2.4   18.9   in 2000   2.8   in 1952  
Direction   ENE   S   NNE       SSE SSE
High Wind Gust   18   32   26   -8   45   in 2000   13   in 1952  
Direction   SSW   SSW   NNE       WSW S
Maximum Water Temp   46.9   48.9   45.1   +1.8   55.9   in 2010   38.5   in 2003  
Minimum Water Temp   44.8   46.2   42.4   +2.4   48.3   in 2010   38.0   in 2003  
Average Water Temp   45.9   47.6   43.7   +2.1   52.1   in 2010   38.3   in 2003  
Sunrise/ AM Twilight   6:15:09 AM   5:44:41 AM            
Sunset / PM Twilight   7:18:52 PM   7:48:39 PM            
Length Of Day   13:03:43                          
Special Conditions   None                              
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