388  
CDUS43 KDTX 200542  
CLIMBS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
1242 AM EST FRI DEC 20 2019  
   
...............................
 
 
   
..THE TRI CITIES MI CLIMATE SUMMARY FOR DECEMBER 19 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1898 TO 2019  
 
WEATHER ITEM OBSERVED TIME NORMAL DEPARTURE LAST  
VALUE (LST) VALUE FROM YEAR  
NORMAL    
...................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 30 912 PM 32 -2 46  
MINIMUM 12 133 AM 20 -8 30  
AVERAGE 21 26 -5 38  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.05 -0.05 0.00  
MONTH TO DATE 0.94 1.18 -0.24 0.90  
SINCE DEC 1 0.94 1.18 -0.24 0.90  
SINCE JAN 1 32.38 30.86 1.52 30.22  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.3 -0.3 0.0  
MONTH TO DATE 4.2 5.2 -1.0 0.2  
SINCE DEC 1 4.2 5.2 -1.0 0.2  
SINCE JUL 1 10.8 9.1 1.7 12.7  
SNOW DEPTH T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 44 39 5 27  
MONTH TO DATE 675 684 -9 655  
SINCE DEC 1 675 684 -9 655  
SINCE JUL 1 2129 2157 -28 2180  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 613 557 56 883    
...................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 8.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67 300 AM  
LOWEST 41 300 PM  
AVERAGE 54  
   
......................................................
 
 
SUNRISE AND SUNSET  
DECEMBER 20 2019......SUNRISE 805 AM EST SUNSET 502 PM EST  
DECEMBER 21 2019......SUNRISE 806 AM EST SUNSET 503 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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