Portsmouth Rhode Island Weather Almanac  
Wednesday, March 1, 2023  
Clear early, Partly Cloudy Day to Cloudy & Very Light Rain, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 1, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   45   43   41   +4   60   in 2018   26   in 1980  
Minimum Temperature   31   20   27   +4   46   in 2017   7   in 1897  
Average Temperature   38   32   34   +4   50   in 2018   17   in 1980  
 Month Avg Max Temperature   45.0   43.0   41.0   +4.0   60.0   in 2018   26.0   in 1980  
Month Avg Min Temperature   31.0   20.0   27.0   +4.0   46.0   in 2017   7.0   in 1897  
Month Average Temperature   38.0   32.0   34.0   +4.0   50.0   in 2018   17.0   in 1980  
High Heat Index                                      
Low Wind Chill   24   17   17   +7             -10   in 1980  
Heating Degree Days   27   33   31   -4   48   in 1980   15   in 2018  
Month HDD   27   33   31   -4   48   in 1980   15   in 2018  
Season HDD   3337   3603   3857   -520   4849   in 1918   3193   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2006   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   35   40   32   +3   51   in 2017   -8   in 1980  
Minimum Dew Point   27   1   16   +11   44   in 2017   -15   in 1980  
Average  Dew Point   31   21   24   +7   48   in 2017   -12   in 1980  
 Month Avg Max Dew Point   35.0   40.0   32.0   +3.0   51.0   in 2017   -8.0   in 1980  
Month Avg Min Dew Point   27.0   1.0   16.0   +11.0   44.0   in 2017   -15.0   in 1980  
Month Average Dew Point   31.0   21.0   24.0   +7.0   48.0   in 2017   -11.5   in 1980  
Precipitation   .01   .05   .13   -.12   1.77   in 1987            
One Hour   .01   .04           .45   in 1987            
Hourly Rate   .00   .19           .79   in 2012            
Month Precipitation   .01   .05   .13   -.12   1.77   in 1987   .00   in 2020  
Year Precipitation   9.14   9.44   7.23   +1.91   17.40   in 1979   2.65   in 1980  
Snow   0.0   0.0   0.3   -0.3   9.3   in 1959       in    
Snow Depth   0   T           16   in 2015       in    
Month Snow   0.0   0.0   0.3   -0.3   9.3   in 1959   0.0   in 2023  
Season Snow   9.0   33.7   27.6   -18.6   67.6   in 2005   4.7   in 1998  
    March 1, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   95%   84%   +14%   100%   in 2017   35%   in 1980  
Minimum Humidity   52%   41%   49%   +3%   92%   in 2012   21%   in 1988  
Average Humidity   75%   68%   67%   +8%   95%   in 2012   29%   in 1980  
Maximum Barometer   30.16   30.34   30.12   +00.04   30.74   in 1934   29.39   in 2005  
Minimum Barometer   29.98   29.90   29.76   +00.22   30.34   in 1994   28.93   in 1966  
Average Barometer   30.07   30.12   29.94   +00.13   30.41   in 1994   29.28   in 1999  
Average Wind   6.6   6.8   8.3   -1.7   15.9   in 1968   2.6   in 2015  
Direction   SSE   SSE   WNW       NNW S
High Wind Gust   20   24   26   -6   52   in 1941   12   in 1998  
Direction   N   SSE   NW       NE E
Maximum Water Temp   42.1   39.9   39.1   +3.0   43.4   in 2012   31.7   in 2015  
Minimum Water Temp   40.1   37.9   37.3   +2.8   42.1   in 2012   30.3   in 2015  
Average Water Temp   41.1   38.9   38.2   +2.9   42.8   in 2012   31.0   in 2015  
Sunrise/ AM Twilight   6:20:01 AM   5:50:09 AM            
Sunset / PM Twilight   5:35:23 PM   6:04:31 PM            
Length Of Day   11:15:22                          
Special Conditions   None                              
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