414  
CDUS43 KDTX 210540  
CLIMBS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
1240 AM EST SAT DEC 21 2019  
   
...............................
 
 
   
..THE TRI CITIES MI CLIMATE SUMMARY FOR DECEMBER 20 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 37 252 PM 32 5 43  
MINIMUM 27 1035 PM 20 7 36  
AVERAGE 32 26 6 40  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.06 -0.06 0.10  
MONTH TO DATE 0.94 1.24 -0.30 1.00  
SINCE DEC 1 0.94 1.24 -0.30 1.00  
SINCE JAN 1 32.38 30.92 1.46 30.32  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.4 -0.4 0.0  
MONTH TO DATE 4.2 5.6 -1.4 0.2  
SINCE DEC 1 4.2 5.6 -1.4 0.2  
SINCE JUL 1 10.8 9.5 1.3 12.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 33 39 -6 25  
MONTH TO DATE 708 723 -15 680  
SINCE DEC 1 708 723 -15 680  
SINCE JUL 1 2162 2196 -34 2205  
 
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 SE (150)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 8.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 900 PM  
LOWEST 45 100 PM  
AVERAGE 61  
   
......................................................
 
 
SUNRISE AND SUNSET  
DECEMBER 21 2019......SUNRISE 806 AM EST SUNSET 503 PM EST  
DECEMBER 22 2019......SUNRISE 807 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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