Portsmouth Rhode Island Weather Almanac  
Sunday, January 29, 2023  
Partly Cloudy early then Mostly Cloudy & Very Light Rain PM, Continued Very Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    January 29, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   50   31   37   +13   58   in 2002   18   in 2021  
Minimum Temperature   39   10   22   +17   41   in 2002   5   in 1934  
Average Temperature   45   21   30   +15   50   in 2002   12   in 1926  
 Month Avg Max Temperature   44.7   37.0   38.0   +6.6   45.4   in 1913   27.9   in 2004  
Month Avg Min Temperature   33.1   20.4   24.2   +8.9   33.1   in 2023   12.4   in 1982  
Month Average Temperature   39.1   29.0   31.2   +7.9   39.1   in 2023   21.7   in 2004  
High Heat Index                                      
Low Wind Chill   37   -9   11   +26             -12   in 1977  
Heating Degree Days   20   44   35   -15   53   in 1926   15   in 2002  
Month HDD   751   1045   980   -229   1256   in 2004   751   in 2023  
Season HDD   2444   2601   2850   -406   3683   in 1918   2241   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   44   30   27   +17   50   in 1950   4   in 1955  
Minimum Dew Point   35   4   11   +24   39   in 2002   -11   in 1962  
Average  Dew Point   40   17   19   +21   42   in 2002   -3   in 1962  
 Month Avg Max Dew Point   39.6   30.0   30.1   +9.5   39.6   in 2023   15.6   in 1981  
Month Avg Min Dew Point   28.0   9.1   14.0   +14.1   28.0   in 2023   -1.2   in 1982  
Month Average Dew Point   34.0   14.4   22.1   +11.8   34.0   in 2023   7.4   in 1981  
Precipitation   .01   .82   .11   -.10   1.27   in 1973            
One Hour   .01   .00           .26   in 1990            
Hourly Rate   .00   .00           .22   in 2006            
Month Precipitation   7.08   3.70   3.45   +3.63   12.04   in 1979   .78   in 1955  
Year Precipitation   7.08   3.70   3.45   +3.63   12.04   in 1979   .78   in 1955  
Snow   0.0   18.1   0.3   -0.3   18.1   in 2022       in    
Snow Depth   0   1           27   in 2005       in    
Month Snow   0.8   23.9   9.4   -8.6   33.8   in 2005   T   in 1950  
Season Snow   2.3   24.7   16.5   -14.2   46.0   in 2005   0.8   in 2007  
    January 29, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   97%   96%   81%   +16%   100%   in 2016   54%   in 1965  
Minimum Humidity   74%   73%   50%   +24%   86%   in 2013   24%   in 2005  
Average Humidity   86%   85%   65%   +20%   89%   in 1973   42%   in 1962  
Maximum Barometer   30.34   29.95   30.11   +00.23   30.73   in 1988   29.21   in 1979  
Minimum Barometer   30.09   29.25   29.81   +00.28   30.41   in 1988   29.00   in 1979  
Average Barometer   30.22   29.60   29.96   +00.26   30.57   in 1988   29.11   in 1979  
Average Wind   7.3   21.8   8.1   -0.8   21.8   in 2022   2.4   in 2005  
Direction   S   N   WNW       N WSW
High Wind Gust   27   52   25   +2   72   in 1926   10   in 1969  
Direction   SSE   NNW   WNW       W ENE
Maximum Water Temp   43.0   40.3   39.2   +3.8   45.3   in 2007   33.8   in 2004  
Minimum Water Temp   42.3   37.4   36.3   +6.0   42.5   in 2012   #N/A   in 2010  
Average Water Temp   42.7   38.9   37.8   +4.9   43.4   in 2007   32.7   in 2004  
Sunrise/ AM Twilight   6:59:52 AM   6:29:59 AM            
Sunset / PM Twilight   4:56:53 PM   5:26:47 PM            
Length Of Day   9:57:01                          
Special Conditions   None                              
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Hour-by-Hour Weather For January 29, 2023            
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