Portsmouth Rhode Island Weather Almanac  
Friday, February 10, 2023  
Partly Cloudy, Light Fog early then Clear, Breezy, Record Breaking Warm Temperatures  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    February 10, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   63   50   39   +24   63   in 2023   9   in 1899  
Minimum Temperature   41   32   24   +17   41   in 2023   0   in 1979  
Average Temperature   52   41   32   +20   52   in 2023   6   in 1899  
 Month Avg Max Temperature   41.6   41.1   38.0   +3.6   48.5   in 1991   23.0   in 1934  
Month Avg Min Temperature   21.7   25.2   23.8   -2.1   32.4   in 2020   7.2   in 1934  
Month Average Temperature   31.9   33.5   31.4   +0.5   39.8   in 1991   15.3   in 1934  
High Heat Index                                      
Low Wind Chill   37   32   10   +27             -23   in 1979  
Heating Degree Days   13   24   33   -20   59   in 1899   13   in 2023  
Month HDD   331   315   336   -5   497   in 1934   252   in 1991  
Season HDD   2825   3012   3255   -430   4219   in 1918   2571   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   52   44   30   +22   53   in 1990   -2   in 1979  
Minimum Dew Point   32   26   13   +19   36   in 2020   -15   in 1979  
Average  Dew Point   42   35   22   +20   42   in 2023   -9   in 1979  
 Month Avg Max Dew Point   33.1   37.6   28.8   +4.3   40.1   in 2008   10.2   in 1980  
Month Avg Min Dew Point   9.7   18.7   12.3   -2.6   25.9   in 2020   -2.5   in 1980  
Month Average Dew Point   21.5   28.2   22.0   -0.5   33.0   in 2008   3.9   in 1980  
Precipitation   .00   .00   .12   -.12   1.58   in 1893            
One Hour   .00   .00           .30   in 1959            
Hourly Rate   .00   .00           .50   in 2005            
Month Precipitation   .07   2.57   1.16   -1.09   4.13   in 1970   T   in 1944  
Year Precipitation   7.26   4.53   4.83   +2.43   12.38   in 1979   1.28   in 2007  
Snow   0.0   0.0   0.4   -0.4   5.2   in 2010       in    
Snow Depth   0   0           26   in 1978       in    
Month Snow   T   0.3   3.2   -3.2   26.3   in 1978   0.0   in 2020  
Season Snow   2.3   25.0   20.3   -18.0   51.0   in 1996   2.3   in 2023  
    February 10, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   97%   83%   +16%   100%   in 2005   52%   in 1983  
Minimum Humidity   43%   49%   50%   -7%   88%   in 1970   23%   in 1992  
Average Humidity   71%   73%   67%   +4%   94%   in 1970   39%   in 1983  
Maximum Barometer   29.96   29.98   30.15   -00.19   30.86   in 1951   29.46   in 1954  
Minimum Barometer   29.73   29.76   29.81   -00.08   30.57   in 1951   28.93   in 1969  
Average Barometer   29.85   29.87   29.98   -00.13   30.72   in 1951   29.23   in 1969  
Average Wind   9.9   6.6   7.8   +2.1   21.7   in 1969   2.8   in 1956  
Direction   W   SW   WNW       NNW NNE
High Wind Gust   29   32   25   +4   53   in 1969   12   in 1956  
Direction   SSW   SSW   WNW       N NW
Maximum Water Temp   42.6   39.7   38.2   +4.4   43.9   in 2012   34.7   in 2019  
Minimum Water Temp   40.8   38.3   36.3   +4.5   42.8   in 2012   32.5   in 2007  
Average Water Temp   41.7   39.0   37.3   +4.4   43.4   in 2012   33.7   in 2019  
Sunrise/ AM Twilight   6:46:55 AM   6:16:37 AM            
Sunset / PM Twilight   5:12:07 PM   5:42:17 PM            
Length Of Day   10:25:12                          
Special Conditions   Fog                                  
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