Middletown Rhode Island Weather Almanac
Thursday, December 21, 2017
Clear to Mostly Cloudy PM, Light Winds, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2017  
    December 21, 2017     Record Record
Observed Daily Data   Observed   2016   Normal   Depart   Highest Lowest
Maximum Temperature   37   40   40   -3   58   in 1999   13   in 1955  
Minimum Temperature   28   29   26   +2   46   in 2013   -3   in 1955  
Average Temperature   33   35   33   +0   52   in 1957   5   in 1955  
Precipitation   .00   .00   .14   -.14   2.05   in 1946            
One Hour   .00   .00           .59   in 1993            
Snowfall   0.0   0.0   0.3   -0.3   7.2   in 1954            
Snow Depth   0   0           20   in 2009            
HDD   32   30   32   +0   60   in 1955   13   in 1957  
CDD   0   0   0   +0   0   in            
Maximum Dew Point   21   32   32   -11   57   in 1999   -12   in 1955  
Minimum Dew Point   14   21   16   -2   45   in 2013   -23   in 1955  
Average  Dew Point   18   27   24   -6   48   in 2013   -18   in 1955  
Maximum Humidity   70%   87%   83%   -13%   100%         44%   in 1955  
Minimum Humidity   43%   50%   57%   -14%   96%   in 1972   22%   in 1955  
Average Humidity   57%   69%   70%   -14%   98%   in 1972   33%   in 1955  
Maximum Barometer   30.30   30.20   30.16   +00.14   30.94   in 1983   29.42   in 1978  
Minimum Barometer   30.00   30.07   29.83   +00.17   30.50   in 1983   28.95   in 1973  
Average Barometer   30.15   30.14   30.00   +00.15   30.72   in 1983   29.21   in 1976  
Average Wind   4.8   5.9   8.9   -4.1   18.6   in 1976   2.7   in 1956  
Direction   WNW   WNW   WNW       WNW         SW        
High Wind Gust   15   20   27   -12   48   in 1957   12   in 1983  
Direction   WNW   WSW   WNW       S         NE        
High Heat Index                                      
Wind Chill   22   24   15   +7             -25   in 1955  
Maximum Water Temp   44.8   42.4   45.0   -0.2   50.2   in 2006   41.4   in 2010  
Minimum Water Temp   41.2   40.3   42.3   -1.1   47.2   in 2011   37.2   in 2004  
Average Water Temp   43.0   41.4   43.7   -0.6   48.4   in 2011   39.4   in 2004  
Sunrise/ AM Twilight   7:08:AM   6:37:AM            
Sunset / PM Twilight   4:18:PM   4:50:PM            
Length Of Day   9:10                          
Special Conditions   None                                  
Comments                                      
    December 21, 2017     Record Record
Month-to-Date Summary   Observed   2016   Normal Depart   Highest Lowest
 Avg Maximum Temperature   42.4   42.0   43.4   -1.0   53.3   in 2015   31.6   in 1904  
Avg Minimum Temperature   30.0   29.1   29.7   +0.3   40.7   in 2015   16.0   in 1989  
Average Temperature   36.2   35.6   36.5   -0.3   47.0   in 2015   24.4   in 1989  
Total Precipitation   1.31   1.83   3.05   -1.74   9.27   in 1936   .27   in 1998  
Total Snowfall   6.1   2.6   4.6   +1.5   21.3   in 1981   0.0   in 2015  
Total HDD   599   615   593   +6   849   in 1989   371   in 2015  
Total CDD   0   0   0   +0   0   in     0   in    
Avg Maximum Dew Point   33.9   34.0   35.4   -1.5   47.8   in 2015   17.8   in 1989  
Avg Minimum Dew Point   20.5   18.7   20.1   +0.3   35.1   in 2015   -0.4   in 1989  
Average  Dew Point   27.2   26.3   27.8   -0.6   41.4   in 2015   8.7   in 1989  
    December 21, 2017     Record Record
Year-to-Date Summary   Observed   2016   Normal Depart   Highest Lowest
Total Precipitation   40.42   30.80   47.03   -6.61   63.81   in 1983   27.14   in 1965  
Total Snowfall (since Jul 1)   6.1   2.6   5.7   +0.4   21.3   in 1898   0.0   in 2015  
Total HDD (since Jul 1)   1396   1470   1625   -229   2137   in 1904   1166   in 2015  
Total CDD (since Jan 1)   580   807   563   +17   807   in 2016   290   in 1902  
                             
Hour-by-Hour Weather For December 21, 2017  
Climate Weather for December 21  
Weather History For December 21  
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