Portsmouth Rhode Island Weather Almanac  
Friday, June 21, 2024  
Partly Cloudy early, Clear Day to Cloudy, Heavy Rain/Thunderstorms PM, Light Wind and Hot/Very Muggy  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    June 21, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   89   72   75   +14   93   in 2012   60   in 1967  
Minimum Temperature   67   53   60   +7   73   in 2012   48   in 1979  
Average Temperature   78   63   68   +10   83   in 2012   56   in 1918  
 Month Avg Max Temperature   76.5   71.2   72.4   +4.0   78.1   in 1925   65.5   in 1907  
Month Avg Min Temperature   59.1   54.4   56.3   +2.8   59.6   in 2001   50.2   in 1907  
Month Average Temperature   68.1   63.0   64.5   +3.6   68.8   in 1925   58.0   in 1907  
High Heat Index   102   72   77   +25   102   in 2024            
Low Wind Chill                                      
Heating Degree Days   0   2   1   -1   9   in 1918   0   in 2024  
Month Heating DD   5   60   44   -39   159   in 1907   3   in 1899  
Season Heating DD   4952   4782   5503   -551   6619   in 1905   4433   in 1932    
Cooling Degree Days   13   0   4   +9   18   in 2012   0   in 2023    
Month Cooling DD   70   19   40   +30   96   in 1925   2   in 2003    
Year Cooling DD   80   19   52   +28   106   in 2001   2   in 2003    
Maximum Dew Point   77   61   65   +12   77   in 2024   45   in 1968    
Minimum Dew Point   65   51   55   +10   66   in 2012   36   in 1986    
Average  Dew Point   71   56   60   +11   71   in 2024   43   in 1968  
 Month Avg Max Dew Point   65.4   60.6   61.5   +3.9   65.4   in 2024   53.4   in 1965  
Month Avg Min Dew Point   54.8   52.2   51.7   +3.1   55.5   in 2010   43.5   in 1958  
Month Average Dew Point   60.1   56.4   56.5   +3.6   60.1   in 1996   48.8   in 1965  
Precipitation   1.00   .00   .12   +.88   1.01   in 1962            
One Hour Rain   .69   .00           .85   in 1955            
Half Hour Rain   .58   .00           .58   in 2024            
Hourly Rain Rate   5.10   .00           5.10   in 2024            
Month Precipitation   1.77   1.23   2.49   -.72   8.90   in 1982   .01   in 1949  
Year Precipitation   30.93   21.90   21.66   +9.27   38.24   in 1998   12.67   in 1957  
Snow   0.0   0.0   ######   ######   0.0   in 1900            
Snow Depth   0   0   38889   -38889   44003   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in Many  
Season Snow   12.7   9.1   33.8   -21.1   84.1   in 1996   5.0   in 1998  
    June 21, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   91%   +8%   100%   in 2021   61%   in 1954  
Minimum Humidity   68%   63%   57%   +11%   88%   in 2021   29%   in 1957  
Average Humidity   84%   81%   74%   +9%   94%   in 2021   52%   in 1968  
Maximum Barometer   30.22   30.33   30.01   +00.21   30.52   in 2002   29.56   in 2009  
Minimum Barometer   30.11   30.27   29.81   +00.30   30.37   in 2002   29.41   in 2019  
Average Barometer   30.17   30.30   29.91   +00.25   30.45   in 2002   29.52   in 2009  
Average Wind   4.0   5.8   5.9   -1.9   13.3   in 1956   1.4   in 1989  
Direction   S   ENE   SSW       SSW         S        
High Wind Gust   14   17   21   -7   53   in 1955   7   in 1987  
Direction   SSE   ENE   SSW       NW         S        
Maximum Water Temp   69.8   65.5   66.2   +3.6   72.0   in 2007   61.1   in 2005  
Minimum Water Temp   62.8   63.5   62.2   +0.6   66.6   in 2007   57.3   in 2006  
Average Water Temp   66.3   64.5   64.2   +2.1   69.3   in 2007   60.2   in 2003  
Sunrise/ AM Twilight   5:11:06 AM   4:37:49 AM            
Sunset / PM Twilight   8:22:36 PM   8:56:46 PM            
Length Of Day   15:11:30                          
Special Conditions   Fog, Thunderstorms                          
Comments   Record Breaking Heat Index, Dew Points                  
Hour-by-Hour Weather For June 21, 2024            
Climate Weather for June 21            
Weather History For June 21            
Weather Calendar            
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