Portsmouth Rhode Island Weather Almanac  
Tuesday, July 18, 2023  
Cloudy and Foggy early then Mostly Cloudy, Continued Warm and Muggy  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    July 18, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   81   80   80   +1   92   in 2012   68   in 1913  
Minimum Temperature   71   71   65   +6   74   in 2013   53   in 1956  
Average Temperature   76   76   73   +3   83   in 2013   64   in 1962  
 Month Avg Max Temperature   81.5   80.2   79.6   +1.9   85.0   in 1955   74.4   in 1906  
Month Avg Min Temperature   68.2   64.3   64.3   +3.9   70.9   in 2013   57.5   in 1962  
Month Average Temperature   75.2   72.6   72.3   +2.9   77.1   in 2013   67.4   in 2009  
High Heat Index   87   84           106   in 2012            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   1   in 1962   0   in 2023  
Month Heating DD   0   0   3   -3   23   in 1914   0   in 2023  
Season Heating DD   0   0   3   -3   23   in 1914   0   in 2023  
Cooling Degree Days   11   11   9   +2   18   in 2013   0   in 1989  
Month Cooling DD   183   136   131   +52   218   in 2013   52   in 1895  
Year Cooling DD   259   231   224   +35   339   in 2010   86   in 1918  
Maximum Dew Point   77   75   69   +8   77   in 2023   53   in 1976  
Minimum Dew Point   69   70   61   +8   72   in 2013   45   in 1993  
Average  Dew Point   73   73   65   +8   75   in 2013   51   in 1956  
 Month Avg Max Dew Point   75.0   68.7   68.3   +6.7   75.0   in 2023   60.1   in 1978  
Month Avg Min Dew Point   67.2   59.4   59.7   +7.4   68.4   in 2013   50.5   in 1962  
Month Average Dew Point   71.1   64.0   64.0   +7.1   71.3   in 2013   55.6   in 1962  
Precipitation   T   .05   .09   +.00   .98   in 2007            
One Hour Rain   T   .03           .71   in 2006            
Hourly Rain Rate   .00   .12           7.38   in 2006            
Month Precipitation   5.46   .49   1.82   +3.64   5.46   in 2023   T   in 1982  
Year Precipitation   29.94   23.39   24.39   +5.55   40.76   in 1998   13.52   in 1957  
Snow                                      
Snow Depth                                      
Month Snow                                      
Season Snow   0.0   0.0   0.0   +0.0   0.0   in 1996   0.0   in 1998  
    July 18, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   93%   +6%   100%   in 2017   77%   in 1969  
Minimum Humidity   86%   84%   59%   +27%   92%   in 2005   27%   in 1957  
Average Humidity   93%   92%   76%   +17%   96%   in 2005   54%   in 1993  
Maximum Barometer   30.01   30.04   30.03   -00.02   30.38   in 1935   29.74   in 1997  
Minimum Barometer   29.92   29.74   29.84   +00.08   30.10   in 1967   29.56   in 1984  
Average Barometer   29.97   29.89   29.94   +00.03   30.15   in 1967   29.70   in 1997  
Average Wind   6.0   7.3   5.3   +0.7   10.7   in 1974   1.3   in 1994  
Direction   SSW   SSW   SSW       SW N
High Wind Gust   18   28   20   -2   42   in 2012   10   in 1994  
Direction   SSW   SSW   SSW       NNW N
Maximum Water Temp   74.7   72.1   71.7   +3.0   77.8   in 2013   68.3   in 2004  
Minimum Water Temp   72.1   70.2   67.8   +4.3   72.3   in 2021   63.1   in 2001  
Average Water Temp   73.4   71.2   69.8   +3.6   74.9   in 2013   65.8   in 2004  
Sunrise/ AM Twilight   5:26:29 AM   4:55:37 AM            
Sunset / PM Twilight   8:15:40 PM   8:47:33 PM            
Length Of Day   14:49:11                          
Special Conditions   Fog                                  
Comments      
Hour-by-Hour Weather For July 18, 2023            
Climate Weather for July 18            
Weather History For July 18            
Weather Calendar            
Back To Weather Stat Page            
Home