Portsmouth Rhode Island Weather Almanac  
Thursday, February 9, 2023  
Partly Cloudy early, Mostly Cloudy Day to Cloudy and Windy PM, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    February 9, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   52   40   39   +13   56   in 1937   7   in 1934  
Minimum Temperature   33   27   24   +9   37   in 1990   -11   in 1934  
Average Temperature   43   34   32   +11   45   in 1937   -2   in 1934  
 Month Avg Max Temperature   39.2   40.1   37.9   +1.3   48.6   in 1991   23.0   in 1934  
Month Avg Min Temperature   19.6   24.4   23.8   -4.2   31.7   in 2008   7.9   in 1934  
Month Average Temperature   29.7   32.3   31.3   -1.7   39.7   in 1991   15.4   in 1934  
High Heat Index                                      
Low Wind Chill   30   19   8   +22             -33   in 1934  
Heating Degree Days   22   31   33   -11   67   in 1934   20   in 1937  
Month HDD   318   291   303   +15   444   in 1934   226   in 1991  
Season HDD   2812   2988   3222   -410   4182   in 1918   2535   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   51   35   30   +21   51   in 2023   -4   in 1951  
Minimum Dew Point   25   18   13   +12   36   in 1990   -16   in 1959  
Average  Dew Point   38   27   22   +16   39   in 2001   -7   in 1951  
 Month Avg Max Dew Point   31.0   36.9   28.7   +2.3   40.3   in 2008   9.8   in 1980  
Month Avg Min Dew Point   7.2   17.9   12.2   -5.0   28.8   in 2008   -4.4   in 1993  
Month Average Dew Point   19.2   27.4   22.0   -2.8   34.6   in 2008   3.2   in 1980  
Precipitation   .00   .00   .12   -.12   1.91   in 1969            
One Hour   .00   .00           .29   in 1969            
Hourly Rate   .00   .00           .23   in 2017            
Month Precipitation   .07   2.57   1.04   -.97   3.22   in 1971   T   in 1944  
Year Precipitation   7.26   4.53   4.71   +2.55   12.38   in 1979   1.28   in 2007  
Snow   0.0   0.0   0.4   -0.4   9.3   in 2017       in    
Snow Depth   0   0           26   in 1978       in    
Month Snow   T   0.3   2.8   -2.8   26.3   in 1978   0.0   in 2020  
Season Snow   2.3   25.0   19.9   -17.6   51.0   in 1996   2.3   in 2023  
    February 9, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   96%   82%   +16%   100%   in 2001   53%   in 1951  
Minimum Humidity   50%   51%   49%   +1%   92%   in 2015   19%   in 1968  
Average Humidity   74%   74%   66%   +8%   96%   in 2001   39%   in 1963  
Maximum Barometer   30.33   30.10   30.13   +00.20   30.65   in 2019   29.36   in 1954  
Minimum Barometer   29.87   29.96   29.81   +00.06   30.51   in 1966   29.01   in 1969  
Average Barometer   30.10   30.03   29.97   +00.13   30.57   in 1966   29.26   in 1954  
Average Wind   6.8   6.7   8.3   -1.5   17.6   in 1969   2.1   in 2005  
Direction   SSE   SW   WNW       NE SE
High Wind Gust   30   19   27   +3   51   in 1969   13   in 1998  
Direction   SSW   W   WNW       NNE N
Maximum Water Temp   41.0   39.0   37.9   +3.1   44.4   in 2012   34.7   in 2018  
Minimum Water Temp   39.9   37.0   36.0   +3.9   42.4   in 2012   32.5   in 2010  
Average Water Temp   40.5   38.0   36.9   +3.5   43.4   in 2012   33.7   in 2010  
Sunrise/ AM Twilight   6:48:09 AM   6:17:49 AM            
Sunset / PM Twilight   5:10:51 PM   5:41:05 PM            
Length Of Day   10:22:42                          
Special Conditions   None                              
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