390  
CDUS43 KGRR 200520  
CLIMKG  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI  
1217 AM EST FRI DEC 20 2019  
 
   
...............................
 
 
   
..THE MUSKEGON MI CLIMATE SUMMARY FOR DECEMBER 19 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1896 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 34 713 PM 53 2002 34 0 50  
MINIMUM 15 1226 AM -4 1996 24 -9 33  
1983  
AVERAGE 25 29 -4 42  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.80 2008 0.07 -0.07 0.00  
1923  
MONTH TO DATE 1.38 1.68 -0.30 1.04  
SINCE DEC 1 1.38 1.68 -0.30 1.04  
SINCE JAN 1 45.54 32.62 12.92 41.08  
 
SNOWFALL (IN)  
YESTERDAY 0.0 9.3 2008 1.1 -1.1 0.0  
MONTH TO DATE 6.3 17.0 -10.7 1.8  
SINCE DEC 1 6.3 17.0 -10.7 1.8  
SINCE JUL 1 17.2 23.2 -6.0 14.3  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 36 4 23  
MONTH TO DATE 644 635 9 606  
SINCE DEC 1 644 635 9 606  
SINCE JUL 1 2014 2002 12 2022  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 640 566 74 912    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (180)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 9.9  
 
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 900 PM  
LOWEST 56 900 AM  
AVERAGE 67  
   
......................................................
 
 
 
THE MUSKEGON MI CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 52 1967  
1957  
1949  
MINIMUM TEMPERATURE (F) 24 -8 1983  
 
 
SUNRISE AND SUNSET  
DECEMBER 20 2019......SUNRISE 813 AM EST SUNSET 512 PM EST  
DECEMBER 21 2019......SUNRISE 813 AM EST SUNSET 513 PM EST  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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