Portsmouth Rhode Island Weather Almanac  
Wednesday, August 30, 2023  
Dense Fog early, Cloudy, Rain Shower & Hazy Afternoon to P Cloudy PM, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 30, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   78   83   77   +1   94   in 1973   62   in 1903  
Minimum Temperature   67   72   62   +5   72   in 2022   46   in 1986  
Average Temperature   73   78   70   +3   82   in 1973   58   in 1986  
 Month Avg Max Temperature   78.1   83.3   78.6   -0.5   83.3   in 2022   73.4   in 1903  
Month Avg Min Temperature   63.8   67.0   63.8   -0.0   68.2   in 2018   57.3   in 1964  
Month Average Temperature   71.2   75.5   71.2   -0.0   75.5   in 2018   65.9   in 1964  
High Heat Index   81   91   79   +3   103   in 1973            
Low Wind Chill                             43   in 1986  
Heating Degree Days   0   0   1   -1   7   in 1986   0   in 2023  
Month Heating DD   0   0   3   -3   36   in 1905   0   in 2023  
Season Heating DD   0   0   3   -3   36   in 1905   0   in 2023  
Cooling Degree Days   8   13   5   +3   17   in 1973   0   in 2017  
Month Cooling DD   186   314   204   -18   316   in 2018   54   in 1964  
Year Cooling DD   570   702   532   +38   765   in 2020   244   in 1902  
Maximum Dew Point   75   76   66   +9   76   in 2022   39   in 1965  
Minimum Dew Point   61   71   58   +3   71   in 2022   31   in 1965  
Average  Dew Point   68   74   62   +6   74   in 2022   35   in 1965  
 Month Avg Max Dew Point   69.2   71.6   68.0   +1.2   72.5   in 2021   60.4   in 1964  
Month Avg Min Dew Point   59.8   63.7   59.7   +0.0   65.2   in 2018   50.4   in 1964  
Month Average Dew Point   64.5   67.7   63.8   +0.6   68.8   in 2018   55.4   in 1964  
Precipitation   .06   .00   .11   -.05   3.72   in 1985            
One Hour Rain   .05   .00           1.01   in 1985            
Half Hour Rain   .05   .00           .37   in 2005            
Hourly Rain Rate   .95   .00           3.74   in 2005            
Month Precipitation   5.37   1.10   3.52   +1.85   11.77   in 1946   .33   in 1993  
Year Precipitation   35.62   24.51   29.17   +6.45   45.24   in 1998   16.54   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  
    August 30, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   92%   +7%   100%   in 2017   59%   in 1953  
Minimum Humidity   75%   78%   61%   +14%   93%   in 2005   29%   in 1995  
Average Humidity   87%   89%   77%   +10%   96%   in 2005   45%   in 1953  
Maximum Barometer   29.91   30.03   30.08   -00.17   30.55   in 1986   29.85   in 1989  
Minimum Barometer   29.61   29.78   29.88   -00.27   30.17   in 2000   29.43   in 2020  
Average Barometer   29.76   29.91   29.98   -00.22   30.30   in 1986   29.68   in 1989  
Average Wind   4.5   8.3   5.4   -0.9   11.1   in 1965   1.1   in 2008  
Direction   SW   SSW   SSW       W SSW
High Wind Gust   22   22   20   +2   35   in 1965   10   in 2008  
Direction   SW   SSW   sw       WNW S
Maximum Water Temp   70.2   74.7   70.6   -0.4   76.3   in 2021   65.1   in 2020  
Minimum Water Temp   68.4   72.7   68.3   +0.1   73.4   in 2021   #N/A   in 2020  
Average Water Temp   69.3   73.7   69.5   -0.2   74.9   in 2021   64.1   in 2020  
Sunrise/ AM Twilight   6:08:53 AM   5:07:59 AM            
Sunset / PM Twilight   7:21:47 PM   8:35:19 PM            
Length Of Day   13:12:54                          
Special Conditions   Dense Fog, Haze  
Comments   Day High Temp 76°  
Hour-by-Hour Weather For August 30, 2023            
Climate Weather for August 30            
Weather History For August 30            
Weather Calendar            
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