Portsmouth Rhode Island Weather Almanac  
Saturday, February 11, 2023  
Clear, Breezy and Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    February 11, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   45   51   39   +6   58   in 2009   10   in 1979  
Minimum Temperature   32   34   25   +7   44   in 2018   -4   in 1979  
Average Temperature   39   43   32   +7   49   in 2009   3   in 1979  
 Month Avg Max Temperature   41.9   42.0   38.1   +3.8   47.5   in 1991   23.8   in 1934  
Month Avg Min Temperature   22.6   26.0   23.9   -1.3   33.1   in 2020   8.0   in 1934  
Month Average Temperature   32.5   34.4   31.5   +1.1   39.2   in 2020   16.1   in 1934  
High Heat Index                                      
Low Wind Chill   24   32   11   +13             -26   in 1979  
Heating Degree Days   26   22   33   -7   62   in 1979   16   in 2009  
Month HDD   357   337   369   -12   538   in 1934   284   in 2020  
Season HDD   2851   3034   3288   -437   4255   in 1918   2613   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   32   41   30   +2   51   in 2018   -14   in 1979  
Minimum Dew Point   19   27   13   +6   43   in 2018   -23   in 1979  
Average  Dew Point   26   34   22   +4   47   in 2018   -19   in 1979  
 Month Avg Max Dew Point   33.0   37.9   28.9   +4.1   38.5   in 2020   8.6   in 1979  
Month Avg Min Dew Point   10.5   19.5   12.4   -1.8   26.7   in 2020   -3.5   in 1979  
Month Average Dew Point   21.9   28.7   22.0   -0.1   32.6   in 2020   2.6   in 1979  
Precipitation   .00   .00   .12   -.12   1.98   in 1955            
One Hour   .00   .00           .35   in 1955            
Hourly Rate   .00   .00           2.58   in 2018            
Month Precipitation   .07   2.57   1.28   -1.21   4.98   in 1970   T   in 1912  
Year Precipitation   7.26   4.53   4.95   +2.31   12.38   in 1979   1.28   in 2007  
Snow   0.0   0.0   0.4   -0.4   12.8   in 1994       in    
Snow Depth   0   0           26   in 1978       in    
Month Snow   T   0.3   3.6   -3.6   26.3   in 1978   0.0   in 2020  
Season Snow   2.3   25.0   20.7   -18.4   51.0   in 1996   2.3   in 2023  
    February 11, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   74%   86%   83%   -9%   100%   in 2018   45%   in 1991  
Minimum Humidity   41%   44%   52%   -11%   96%   in 2018   24%   in 1962  
Average Humidity   58%   65%   67%   -10%   98%   in 2018   38%   in 1991  
Maximum Barometer   30.28   30.06   30.13   +00.15   30.94   in 1906   29.39   in 1970  
Minimum Barometer   29.92   29.94   29.78   +00.14   30.28   in 2019   28.98   in 1970  
Average Barometer   30.10   30.00   29.95   +00.15   30.47   in 1988   29.19   in 1970  
Average Wind   9.0   7.0   8.5   +0.5   22.3   in 1973   2.3   in 1985  
Direction   WNW   S   WNW       NNE N
High Wind Gust   35   22   27   +8   58   in 1955   12   in 1985  
Direction   NW   SSW   NW       SSE S
Maximum Water Temp   42.6   40.5   38.3   +4.3   44.0   in 2012   34.6   in 2015  
Minimum Water Temp   41.0   38.7   36.4   +4.6   42.8   in 2012   33.4   in 2019  
Average Water Temp   41.8   39.6   37.3   +4.5   43.4   in 2012   34.1   in 2015  
Sunrise/ AM Twilight   6:45:41 AM   6:15:24 AM            
Sunset / PM Twilight   5:13:22 PM   5:43:28 PM            
Length Of Day   10:27:41                          
Special Conditions   None                              
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