Portsmouth Rhode Island Weather Almanac
Friday, February 12, 2021
Clear early, Partly Cloudy Day to Cloudy PM, Dry and Bitter Cold
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    February 12, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   30   45   39   -9   54   in 1999   8   in 1914  
Minimum Temperature   14   36   25   -11   41   in 2009   -6   in 1914  
Average Temperature   22   41   32   -10   48   in 1999   1   in 1914  
 Month Avg Max Temperature   35.8   44.4   38.2   -2.4   46.0   in 1991   23.4   in 1899  
Month Avg Min Temperature   24.5   33.3   24.0   +0.5   33.3   in 2020   9.1   in 1934  
Month Average Temperature   30.1   38.9   31.5   -1.4   38.9   in 2020   16.9   in 1934  
Precipitation   .00   .00   .12   -.12   2.66   in 1988            
One Hour   .00   .00           .57   in 1988            
Hourly Rate   .00   .00           .28   in 2019            
Month Precipitation   1.27   1.87   1.40   -.13   4.98   in 1970   T   in 1912  
Year Precipitation   3.23   3.91   5.07   -1.84   12.38   in 1979   1.59   in 1980  
Snow   0.0   0.0   0.4   -0.4   9.8   in 1897            
Month Snow   10.5   0.0   4.0   +6.5   26.3   in 1978   0.0   in 2020  
Season Snow   22.2   12.2   21.1   +1.1   51.0   in 1996   2.8   in 1980  
Snow Depth   3   0           26   in 1978            
HDD   43   24   33   +10   64   in 1914   17   in 1999  
Month HDD   416   308   402   +14   575   in 1934   308   in 2020  
Season HDD   3077   3073   3321   -244   4281   in 1918   2661   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   14   35   30   -16   52   in 1999   -9   in 1979  
Minimum Dew Point   2   20   13   -11   35   in 1998   -21   in 1967  
Average  Dew Point   8   28   22   -14   43   in 1999   -14   in 1979  
 Month Avg Max Dew Point   28.8   38.2   29.0   -0.3   39.3   in 2018   7.2   in 1979  
Month Avg Min Dew Point   16.6   26.2   12.4   +4.2   26.2   in 2020   -4.8   in 1979  
Month Average Dew Point   22.7   32.2   22.0   +0.7   32.2   in 2020   1.2   in 1979  
    February 12, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   63%   83%   81%   -18%   100%   in 2018   50%   in 1991  
Minimum Humidity   32%   40%   48%   -16%   90%   in 1963   22%   in 1987  
Average Humidity   48%   62%   64%   -17%   95%   in 1963   38%   in 1991  
Maximum Barometer   30.32   30.18   30.15   +00.17   30.86   in 1938   29.53   in 2009  
Minimum Barometer   30.25   29.80   29.77   +00.48   30.42   in 2001   29.12   in 1955  
Average Barometer   30.29   29.99   29.96   +00.32   30.58   in 2001   29.35   in 2009  
Average Wind   7.6   10.2   8.9   -1.3   21.5   in 1952   2.9   in 1965  
Direction   NNW   SSW   WNW       WNW         SSE        
High Wind Gust   28   24   28   +0   55   in 1952   15   in 1987  
Direction   N   NW   WNW       WNW         WNW        
High Heat Index                                      
Wind Chill   0   27   8   -8             -19   in 1979  
Maximum Water Temp   38.1   36.9   37.7   +0.4   43.7   in 2006   34.4   in 2015  
Minimum Water Temp   36.3   36.1   36.0   +0.3   39.9   in 1998   33.2   in 2014  
Average Water Temp   37.2   36.5   36.9   +0.3   41.3   in 2012   33.9   in 2015  
Sunrise/ AM Twilight   6:42:35 AM   6:14:10 AM            
Sunset / PM Twilight   5:16:15 PM   5:44:40 PM            
Length Of Day   10:33:40                          
Special Conditions   None                              
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