Portsmouth Rhode Island Weather Almanac  
Wednesday, March 29, 2023  
Clear, Pleasant with Seasonal Temperatures  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 29, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   50   38   50   +0   73   in 1946   28   in 1919  
Minimum Temperature   33   18   34   -1   46   in 1998   5   in 1923  
Average Temperature   42   28   42   +0   59   in 1910   18   in 1923  
 Month Avg Max Temperature   47.5   49.5   45.3   +2.2   52.2   in 1946   34.9   in 1916  
Month Avg Min Temperature   33.8   32.6   30.4   +3.4   37.6   in 2012   22.6   in 1916  
Month Average Temperature   40.8   41.3   38.1   +2.7   45.1   in 2012   29.0   in 1916  
High Heat Index                                      
Low Wind Chill   29   5   27   +2             -7   in 1923  
Heating Degree Days   23   37   23   +0   47   in 1923   6   in 1910  
Month HDD   701   687   780   -79   1043   in 1916   576   in 2012  
Season HDD   4011   4257   4606   -595   5652   in 1918   3817   in 2012  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   37   15   37   +0   56   in 1989   13   in 1966  
Minimum Dew Point   24   4   24   +0   44   in 1998   -4   in 1974  
Average  Dew Point   31   10   31   +0   50   in 1998   7   in 1974  
 Month Avg Max Dew Point   37.4   39.2   34.4   +3.0   41.9   in 2012   24.3   in 1960  
Month Avg Min Dew Point   25.2   21.9   19.9   +5.3   27.6   in 2012   11.2   in 1960  
Month Average Dew Point   31.6   30.5   27.4   +4.1   34.8   in 2012   17.7   in 1960  
Precipitation   .00   .00   .14   -.14   1.80   in 2010            
One Hour   .00   .00           .65   in 1997            
Hourly Rate   .00   .00           1.55   in 2014            
Month Precipitation   4.33   3.11   4.08   +.25   9.61   in 2010   .22   in 1915  
Year Precipitation   13.46   12.50   11.18   +2.28   19.47   in 1979   5.98   in 2012  
Snow   0.0   0.0   0.1   -0.1   5.4   in 1970       in    
Snow Depth   0   0           2   in 2015       in    
Month Snow   0.1   0.5   5.5   -5.4   31.6   in 1956   0.0   in 1903  
Season Snow   9.1   34.2   32.8   -23.7   78.0   in 2005   5.0   in 1998  
    March 29, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   96%   60%   86%   +10%   100%   in 2018   36%   in 2007  
Minimum Humidity   42%   33%   50%   -8%   92%   in 2009   14%   in 2007  
Average Humidity   69%   47%   68%   +1%   96%   in 1993   25%   in 2007  
Maximum Barometer   30.17   30.10   30.11   +00.06   30.74   in 1990   29.46   in 1984  
Minimum Barometer   30.00   29.91   29.82   +00.18   30.43   in 2004   28.96   in 1984  
Average Barometer   30.09   30.01   29.96   +00.12   30.53   in 1990   29.21   in 1984  
Average Wind   6.4   12.8   8.2   -1.8   22.7   in 1984   3.9   in 2018  
Direction   N   NW   N       ENE S
High Wind Gust   19   30   26   -7   52   in 1984   13   in 1973  
Direction   SSW   NNW   SSW       NE SSE
Maximum Water Temp   46.2   42.3   42.5   +3.7   46.8   in 2012   38.7   in 2015  
Minimum Water Temp   43.5   40.5   40.3   +3.2   45.7   in 2012   #N/A   in 2015  
Average Water Temp   44.9   41.4   41.4   +3.5   46.3   in 2012   37.3   in 2015  
Sunrise/ AM Twilight   6:33:28 AM   7:03:27 AM            
Sunset / PM Twilight   7:06:54 PM   7:35:54 PM            
Length Of Day   12:33:26                          
Special Conditions   None                              
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