185  
CDUS43 KDTX 300535  
CLIMBS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
135 AM EDT TUE SEP 30 2025  
   
...............................  
 
   
..THE TRI CITIES MI CLIMATE SUMMARY FOR SEPTEMBER 29 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1912 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 80 442 PM 88 1921 68 12 78  
MINIMUM 49 507 AM 27 1942 47 2 59  
AVERAGE 65 57 8 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.70 1986 0.09 -0.09 0.00  
MONTH TO DATE 2.44 2.72 -0.28 0.75  
SINCE SEP 1 2.44 2.72 -0.28 0.75  
SINCE JAN 1 20.41 24.99 -4.58 19.59  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 8 -8 0  
MONTH TO DATE 60 128 -68 43  
SINCE SEP 1 60 128 -68 43  
SINCE JUL 1 94 156 -62 57  
 
COOLING  
YESTERDAY 0 1 -1 4  
MONTH TO DATE 41 60 -19 91  
SINCE SEP 1 41 60 -19 91  
SINCE JAN 1 729 625 104 764    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 2.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 700 AM  
LOWEST 43 200 PM  
AVERAGE 65  
   
......................................................  
 
THE TRI CITIES MI CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 86 2002  
MINIMUM TEMPERATURE (F) 47 29 1993  
 
SUNRISE AND SUNSET  
SEPTEMBER 30 2025.....SUNRISE 733 AM EDT SUNSET 719 PM EDT  
OCTOBER 1 2025.......SUNRISE 734 AM EDT SUNSET 717 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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