Portsmouth Rhode Island Weather Almanac
Monday, March 1, 2021
Cloudy, Rain, Fog and Warm AM, Clearing, Windy and Colder PM
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    March 1, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   48   36   41   +7   60   in 2018   26   in 1980  
Minimum Temperature   28   20   27   +1   46   in 2017   7   in 1897  
Average Temperature   38   28   34   +4   50   in 2018   17   in 1980  
 Month Avg Max Temperature   48.0   36.0   41.0   +7.0   60.0   in 2018   26.0   in 1980  
Month Avg Min Temperature   28.0   20.0   27.0   +1.0   46.0   in 2017   7.0   in 1897  
Month Average Temperature   38.0   28.0   34.0   +4.0   50.0   in 2018   17.0   in 1980  
HDD   27   37   31   -4   48   in 1980   15   in 2018  
Month HDD   27   37   31   -4   48   in 1980   15   in 2018  
Season HDD   3594   3598   3857   -263   4849   in 1918   3193   in 2016  
CDD   0   0   0   +0   0   in   0   in    
Month CDD   0   0   0   +0   0   in     0   in    
Year CDD   0   0   0   +0   0   in     0   in    
Maximum Dew Point   47   15   32   +15   51   in 2017   -8   in 1980  
Minimum Dew Point   12   9   16   -4   44   in 2017   -15   in 1980  
Average  Dew Point   30   12   24   +6   48   in 2017   -12   in 1980  
 Month Avg Max Dew Point   47.0   15.0   32.0   +15.0   51.0   in 2017   -8.0   in 1980  
Month Avg Min Dew Point   12.0   9.0   16.0   -4.0   44.0   in 2017   -15.0   in 1980  
Month Average Dew Point   30.0   12.0   24.0   +6.0   48.0   in 2017   -11.5   in 1980  
Precipitation   .45   .00   .13   +.32   1.77   in 1987            
One Hour   .09   .00           .45   in 1987            
Hourly Rate   .13   .00           .79   in 2012            
Month Precipitation   .45   .00   .13   +.32   1.77   in 1987   .00   in 2020  
Year Precipitation   5.95   5.81   7.23   -1.28   17.40   in 1979   2.65   in 1980  
Snow   0.0   0.0   0.3   -0.3   9.3   in 1959            
Snow Depth   0   0           16   in 2015            
Month Snow   0.0   0.0   0.3   -0.3   9.3   in 1959   0.0   in 2021  
Season Snow   27.7   12.2   27.6   +0.1   67.6   in 2005   4.7   in 1998  
    March 1, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   99%   67%   84%   +15%   100%   in 2017   35%   in 1980  
Minimum Humidity   49%   33%   50%   -1%   92%   in 2012   21%   in 1988  
Average Humidity   74%   50%   67%   +7%   95%   in 2012   29%   in 1980  
Maximum Barometer   29.99   30.18   30.11   -00.12   30.74   in 1934   29.39   in 2005  
Minimum Barometer   29.44   29.97   29.76   -00.32   30.34   in 1994   28.93   in 1966  
Average Barometer   29.72   30.08   29.93   -00.22   30.41   in 1994   29.28   in 1999  
Average Wind   10.4   10.6   8.4   +2.0   15.9   in 1968   2.6   in 2015  
Direction   NW   NW   WNW       NNW         S        
High Wind Gust   42   24   26   +16   52   in 1941   12   in 1998  
Direction   NW   WNW   NW       NE         E        
High Heat Index                                      
Wind Chill   14   7   16   -2             -10   in 1980  
Maximum Water Temp   38.8   35.7   38.9   -0.1   43.4   in 2012   31.7   in 2015  
Minimum Water Temp   38.3   34.6   37.1   +1.2   42.1   in 2012   30.3   in 2015  
Average Water Temp   38.6   35.2   38.0   +0.5   42.8   in 2012   31.0   in 2015  
Sunrise/ AM Twilight   6:17:49 AM   5:50:09 AM            
Sunset / PM Twilight   5:36:50 PM   6:04:31 PM            
Length Of Day   11:19:01                          
Special Conditions   Dense Fog                              
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