Portsmouth Rhode Island Weather Almanac  
Sunday, March 10, 2024  
Cloudy, Heavy Rain and Fog early, Partly Cloudy Day to Cloudy PM, Windy and Much Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    March 10, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   51   47   44   +7   67   in 2016   27   in 2003  
Minimum Temperature   38   30   29   +9   51   in 2016   9   in 1984  
Average Temperature   45   39   37   +8   59   in 2016   18   in 1984  
 Month Avg Max Temperature   49.1   46.0   42.4   +6.7   52.8   in 1974   32.0   in 1916  
Month Avg Min Temperature   36.6   31.8   27.9   +8.7   36.7   in 1974   16.8   in 1950  
Month Average Temperature   43.1   39.1   35.5   +7.6   45.1   in 1974   25.7   in 1978  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   28   27   18   +10             -6   in 1929  
Heating Degree Days   20   26   28   -8   47   in 1984   6   in 2016  
Month Heating DD   219   259   295   -76   393   in 1978   199   in 1974  
Season Heating DD   3766   3569   4152   -386   5140   in 1918   3422   in 2016  
Cooling Degree Days   0   0   0   +0       in     0   in Many  
Month Cooling DD   0   0   0   +0   3   in 2022   0   in Many  
Year Cooling DD   726   784   609   +117   871   in 2020   290   in 1902  
Maximum Dew Point   49   35   33   +16   52   in 2002   0   in 1984  
Minimum Dew Point   28   25   18   +10   45   in 2016   -6   in 1987  
Average  Dew Point   39   30   26   +13   48   in 2016   -3   in 1984  
 Month Avg Max Dew Point   45.0   34.0   32.5   +12.5   45.0   in 2024   16.7   in 1978  
Month Avg Min Dew Point   32.1   23.2   17.2   +14.9   32.1   in 2024   -0.8   in 1950  
Month Average Dew Point   38.8   28.6   25.2   +13.6   38.8   in 2024   11.8   in 1978  
Precipitation   1.18   .00   .14   +1.04   2.44   in 1994            
One Hour Rain   .42   .00           .42   in 2024            
Half Hour Rain   .22   .00           .22   in 2024            
Hourly Rain Rate   2.17   .00           2.17   in 2024            
Month Precipitation   5.02   1.34   1.31   +3.71   5.08   in 1994   .00   in 1894  
Year Precipitation   14.58   10.47   8.54   +6.04   18.83   in 1979   2.98   in 1980  
Snow   0.0   0.0   0.2   -0.2   5.3   in 2017            
Snow Depth   0   0   1   -1   15   in 2015            
Month Snow   0.0   0.1   2.2   -2.2   18.4   in 1941   0.0   in 2024  
Season Snow   12.7   9.1   29.8   -17.1   74.5   in 1996   4.7   in 1998  
    March 10, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   99%   94%   84%   +15%   100%   in 2019   45%   in 1987  
Minimum Humidity   63%   58%   49%   +14%   96%   in 1994   19%   in 1995  
Average Humidity   81%   76%   66%   +15%   98%   in 1994   37%   in 1987  
Maximum Barometer   29.66   30.16   30.14   -00.48   30.88   in 1996   29.37   in 1969  
Minimum Barometer   29.26   29.75   29.82   -00.56   30.68   in 1996   29.09   in 1969  
Average Barometer   29.46   29.96   29.98   -00.52   30.78   in 1996   29.23   in 1969  
Average Wind   13.8   5.5   8.4   +5.4   17.2   in 1987   2.9   in 2015  
Direction   WNW   SSW   WNW       N   S  
High Wind Gust   37   23   27   +10   52   in 1974   12   in 1952  
Direction   ESE   SSW   NW       NW         SW        
Maximum Water Temp   42.8   42.8   39.7   +3.1   44.0   in 2012   35.0   in 2003  
Minimum Water Temp   41.2   41.0   38.0   +3.2   42.3   in 1998   33.0   in 2005  
Average Water Temp   42.0   41.9   38.9   +3.1   43.1   in 2012   34.3   in 2005  
Sunrise/ AM Twilight   7:04:15 AM   6:35:43 AM            
Sunset / PM Twilight   6:46:40 PM   7:14:42 PM            
Length Of Day   11:42:25                          
Special Conditions   Dense Fog                              
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