Portsmouth Rhode Island Weather Almanac  
Thursday, March 2, 2023  
Cloudy, Light Rain & Dense Fog AM then Partly Cloudy PM, Windy and Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 2, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   45   47   41   +4   60   in 1985   25   in 1950  
Minimum Temperature   37   32   27   +10   40   in 1991   10   in 1962  
Average Temperature   41   40   35   +6   49   in 1985   18   in 1962  
 Month Avg Max Temperature   45.0   45.0   41.0   +4.0   54.5   in 1991   26.5   in 1980  
Month Avg Min Temperature   34.0   26.0   27.0   +7.0   39.5   in 1902   10.5   in 1980  
Month Average Temperature   39.5   36.0   34.5   +5.0   46.0   in 1902   18.5   in 1980  
High Heat Index                                      
Low Wind Chill   29   29   18   +11             -6   in 1962  
Heating Degree Days   24   25   30   -6   47   in 1962   16   in 1985  
Month HDD   51   58   61   -10   93   in 1980   38   in 1902  
Season HDD   3361   3628   3887   -526   4878   in 1918   3219   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   44   40   32   +12   56   in 1991   4   in 1980  
Minimum Dew Point   30   22   16   +14   35   in 2004   -12   in 1980  
Average  Dew Point   37   31   24   +13   45   in 1991   -4   in 1980  
 Month Avg Max Dew Point   39.5   40.0   32.0   +7.5   48.5   in 2017   -2.0   in 1980  
Month Avg Min Dew Point   28.5   11.5   16.0   +12.5   34.5   in 2018   -13.5   in 1980  
Month Average Dew Point   34.0   25.8   24.0   +10.0   39.5   in 2018   -7.8   in 1980  
Precipitation   .12   .01   .13   -.01   2.96   in 2018            
One Hour   .04   .01           .69   in 2007            
Hourly Rate   .09   .00           1.79   in 2007            
Month Precipitation   .13   .06   .26   -.13   2.99   in 2018   .00   in 2020  
Year Precipitation   9.26   9.45   7.36   +1.90   17.45   in 1979   2.65   in 1980  
Snow   0.0   0.0   0.3   -0.3   8.8   in 1996       in    
Snow Depth   1   T           20   in 2015       in    
Month Snow   0.0   0.0   0.6   -0.6   9.3   in 1959   0.0   in 2023  
Season Snow   9.0   33.7   27.9   -18.9   69.9   in 1996   4.7   in 1998  
    March 2, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   94%   83%   +16%   100%   in 2007   38%   in 1980  
Minimum Humidity   74%   46%   52%   +22%   90%   in 1991   22%   in 1953  
Average Humidity   87%   70%   67%   +19%   95%   in 1991   32%   in 1980  
Maximum Barometer   29.98   29.99   30.04   -00.06   30.68   in 2002   29.44   in 1968  
Minimum Barometer   29.55   29.86   29.71   -00.16   30.27   in 1962   29.04   in 2018  
Average Barometer   29.77   29.93   29.88   -00.11   30.45   in 2002   29.27   in 1968  
Average Wind   10.4   7.1   9.5   +0.9   26.0   in 2018   2.7   in 2001  
Direction   NW   WNW   WNW       NNE ENE
High Wind Gust   26   22   29   -3   65   in 2018   7   in 1998  
Direction   WNW   WNW   wnw       NNE S
Maximum Water Temp   42.4   41.4   39.0   +3.4   42.7   in 2012   32.5   in 2015  
Minimum Water Temp   40.5   39.4   37.3   +3.2   41.0   in 2012   30.9   in 2015  
Average Water Temp   41.5   40.4   38.2   +3.2   41.9   in 2012   31.7   in 2015  
Sunrise/ AM Twilight   6:18:26 AM   5:48:36 AM            
Sunset / PM Twilight   5:36:34 PM   6:05:39 PM            
Length Of Day   11:18:08                          
Special Conditions   Dense Fog                              
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