Portsmouth Rhode Island Weather Almanac
Tuesday, April 30, 2019
Cloudy, Rain and Fog AM, Clearing Late, Light Winds and Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    April 30, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   51   50   60   -9   83   in 1942   42   in 1909  
Minimum Temperature   41   40   44   -3   55   in 1974   29   in 1992  
Average Temperature   46   45   52   -6   66   in 1942   38   in 1909  
Precipitation   .23   .01   .14   +.09   2.00   in 1902            
One Hour   .12   .01           .36   in 2005            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           1   in 1909            
HDD   19   20   13   +6   27   in 1909   0   in 1974  
CDD   0   0   0   +0   1   in 1942            
Maximum Dew Point   46   42   47   -1   58   in 1994   28   in 1967  
Minimum Dew Point   38   34   34   +5   49   in 1974   9   in 1978  
Average  Dew Point   42   38   40   +2   52   in 1996   21   in 1978  
Maximum Humidity   95%   86%   87%   +8%   100%   in 2005   52%   in 1978  
Minimum Humidity   78%   63%   46%   +32%   97%   in 1990   17%   in 1957  
Average Humidity   87%   75%   66%   +20%   99%   in 1990   36%   in 1978  
Maximum Barometer   30.42   29.97   30.11   +00.31   30.71   in 1934   29.68   in 1978  
Minimum Barometer   30.20   29.89   29.87   +00.33   30.35   in 2006   29.25   in 1987  
Average Barometer   30.31   29.93   29.99   +00.32   30.39   in 2006   29.51   in 1987  
Average Wind   4.5   7.5   7.0   -2.5   16.3   in 1987   3.4   in 2013  
Direction   E   W   S       WNW         S        
High Wind Gust   13   19   23   -10   45   in 1963   13   in 2019  
Direction   NW   W   S       SSE         NW        
High Heat Index                                      
Wind Chill   38   34   37   +1             21   in 1992  
Maximum Water Temp   49.3   47.1   50.9   -1.6   55.6   in 2012   45.1   in 2014  
Minimum Water Temp   46.0   45.1   47.8   -1.8   52.3   in 2007   43.7   in 2003  
Average Water Temp   47.7   46.1   49.3   -1.7   53.8   in 2012   44.7   in 2014  
Sunrise/ AM Twilight   5:42:35 AM   5:12:33 AM            
Sunset / PM Twilight   7:42:12 PM   8:12:14 PM            
Length Of Day   13:59:37                          
Special Conditions   Fog                                  
Comments      
    April 30, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   56.6   51.5   55.4   +1.2   61.1   in 1976   48.8   in 1907  
Avg Minimum Temperature   41.7   37.0   39.2   +2.6   43.0   in 2010   34.1   in 1943  
Average Temperature   49.2   44.2   47.3   +1.9   51.7   in 2010   42.0   in 1907  
Total Precipitation   5.15   4.42   4.54   +.61   11.94   in 1983   .78   in 1942  
Total Snow   0.0   3.6   1.0   -1.0   9.6   in 1996   0.0   in 2019  
Total HDD   469   617   526   -57   682   in 1907   392   in 2010  
Total CDD   0   0   0   +0   13   in 1976   0   in    
Avg Maximum Dew Point   47.0   41.6   42.0   +5.0   47.6   in 2017   34.3   in 1965  
Avg Minimum Dew Point   33.3   27.7   28.8   +4.5   37.3   in 2017   20.5   in 1982  
Average  Dew Point   40.2   34.8   35.4   +4.8   42.4   in 2017   28.9   in 1975  
    April 30, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   17.66   20.81   16.91   +.75   31.21   in 1983   7.53   in 1985  
Total Snow (since Jul 1 18)   21.1   45.6   31.8   -10.7   84.1   in 1996   5.0   in 1998  
Total HDD (since Jul 1 18)   5210   5101   5303   -93   6252   in 1904   4289   in 2012  
Total CDD (since Jan 1)   0   0   0   +0   13   in 1976   0   in    
                             
Hour-by-Hour Weather For April 30, 2019  
Climate Weather for April 30  
Weather History For April 30  
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