Portsmouth Rhode Island Weather Almanac  
Wednesday, April 17, 2024  
Clear early, Partly Cloudy Day to Cloudy, Very Light Rain PM, Much Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    April 17, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   56   56   56   +0   86   in 1976   41   in 2003  
Minimum Temperature   43   48   40   +3   56   in 2002   24   in 1908  
Average Temperature   50   52   48   +2   71   in 2002   34   in 1908  
 Month Avg Max Temperature   54.5   61.0   53.0   +1.5   61.8   in 1945   45.4   in 1907  
Month Avg Min Temperature   40.4   42.7   37.6   +2.8   42.9   in 2010   30.8   in 1982  
Month Average Temperature   47.8   52.1   45.6   +2.2   52.2   in 1945   39.1   in 1907  
High Heat Index                   88   in 1976            
Low Wind Chill   38   45   33   +5             16   in 1908  
Heating Degree Days   15   13   17   -2   31   in 1908   0   in 2012  
Month Heating DD   293   224   330   -37   441   in 1907   217   in 1945  
Season Heating DD   293   224   330   -37   441   in 1907   217   in 1945  
Cooling Degree Days   0   0   0   +0   6   in 2002   0   in Many  
Month Cooling DD   0   5   0   +0   6   in 2002   0   in Many  
Year Cooling DD   0   5   0   +0   6   in 2002   0   in Many  
Maximum Dew Point   44   56   43   +1   63   in 1976   18   in 1980  
Minimum Dew Point   34   47   30   +4   50   in 2002   3   in 1985  
Average  Dew Point   39   52   37   +2   56   in 2002   14   in 1980  
 Month Avg Max Dew Point   44.0   48.0   40.8   +3.2   48.0   in 2023   30.1   in 1975  
Month Avg Min Dew Point   34.6   33.4   27.4   +7.3   35.7   in 2010   15.5   in 1992  
Month Average Dew Point   39.3   40.7   34.1   +5.3   41.3   in 2010   23.5   in 1992  
Precipitation   T   .02   .14   -.14   2.33   in 1954            
One Hour Rain   T   .01           .53   in 1954            
Half Hour Rain   .00   .01           .15   in 2011            
Hourly Rain Rate   .00   .00           .79   in 2011            
Month Precipitation   3.34   1.01   2.45   +.89   6.74   in 1983   .04   in 1963  
Year Precipitation   22.18   14.51   14.04   +8.14   26.01   in 1983   6.69   in 2012  
Snow   0.0   0.0   0.0   +0.0   T   in 1932            
Snow Depth   0   0   0   +0   1   in 1992            
Month Snow   0.0   0.0   0.5   -0.5   9.6   in 1996   0.0   in 2024  
Season Snow   12.7   9.1   33.8   -21.1   84.1   in 1996   5.0   in 1998  
    April 17, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   85%   100%   85%   +0%   100%   in 2023   47%   in 1985  
Minimum Humidity   57%   94%   47%   +10%   98%   in 1987   13%   in 2012  
Average Humidity   71%   97%   66%   +5%   99%   in 1987   32%   in 1985  
Maximum Barometer   30.24   29.79   30.05   +00.19   30.74   in 2014   29.50   in 2007  
Minimum Barometer   30.13   29.53   29.79   +00.34   30.58   in 2014   28.92   in 1929  
Average Barometer   30.19   29.66   29.92   +00.26   30.66   in 2014   29.40   in 2007  
Average Wind   7.3   5.4   8.2   -0.9   15.1   in 1986   2.7   in 2005  
Direction   SSE   SE   SSE       NE   S  
High Wind Gust   18   15   26   -8   52   in 1954   12   in 2001  
Direction   SSE   WSW   SSW       SSW   S  
Maximum Water Temp   51.8   50.5   47.1   +4.7   54.0   in 2012   41.3   in 2003  
Minimum Water Temp   50.2   49.5   44.6   +5.6   50.2   in 2024   39.8   in 2003  
Average Water Temp   51.0   50.0   45.9   +5.1   51.8   in 2012   40.6   in 2003  
Sunrise/ AM Twilight   6:01:15 AM   5:31:31 AM            
Sunset / PM Twilight   7:28:24 PM   7:57:37 PM            
Length Of Day   13:27:09                          
Special Conditions   None                                  
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Hour-by-Hour Weather For April 17, 2024            
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