443  
CXUS53 KDTX 041742 RRB  
CLMMBS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
1242 PM EST SAT JAN 04 2025  
   
...............................  
 
...THE TRI CITIES MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1912 TO 2025  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................  
 
TEMPERATURE (F)  
RECORD  
HIGH 67 12/05/2001  
LOW -12 12/26/1914  
HIGHEST 54 12/28 MM MM  
LOWEST -4 12/22 MM MM  
AVG. MAXIMUM 36.4 34.7 1.7  
AVG. MINIMUM 24.6 23.1 1.5  
MEAN 30.5 28.9 1.6  
DAYS MAX >= 90 0 0.0 0.0  
DAYS MAX <= 32 10 12.1 -2.1  
DAYS MIN <= 32 23 27.0 -4.0  
DAYS MIN <= 0 1 0.6 0.4  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 5.33 1972  
MINIMUM 0.33 1939  
TOTALS 2.50 1.85 0.65  
DAILY AVG. 0.08 0.06 0.02  
DAYS >= .01 12 12.2 -0.2  
DAYS >= .10 8 5.2 2.8  
DAYS >= .50 1 0.8 0.2  
DAYS >= 1.00 1 0.2 0.8  
GREATEST  
24 HR. TOTAL 1.26 12/29 TO 12/30  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 40.2 2000  
TOTALS 9.8 11.8 -2.0  
LIQUID EQUIV 1.00 1.10 -0.10  
SINCE 7/1 9.9 15.3 -5.4  
LIQUID 7/1 0.99  
DAYS >= TRACE 17 8.8 8.2  
DAYS >= 1.0 5 4.1 0.9  
GREATEST  
SNOW DEPTH 5 12/24  
12/25  
 
DEGREE DAYS  
HEATING TOTAL 1061 1119 -58  
SINCE 7/1 2054 2510 -456  
COOLING TOTAL 0 0 0  
SINCE 1/1 780 632 148  
 
FREEZE DATES  
RECORD  
EARLIEST 09/12 (1943)  
LATEST 05/28 (1949)  
EARLIEST 10/17 (2024)  
LATEST 04/26 (2024)    
..........................................................  
 
WIND (MPH)  
AVERAGE WIND SPEED 9.9  
HIGHEST WIND SPEED/DIRECTION 37/030 DATE 12/29  
HIGHEST GUST SPEED/DIRECTION 46/030 DATE 12/29  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.76  
NUMBER OF DAYS FAIR 2  
NUMBER OF DAYS PC 12  
NUMBER OF DAYS CLOUDY 17  
 
AVERAGE RH (PERCENT) 76  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 0 RAIN 2  
LIGHT RAIN 7 FREEZING RAIN 0  
LT FREEZING RAIN 2 HAIL 0  
HEAVY SNOW 1 SNOW 1  
LIGHT SNOW 16 SLEET 1  
FOG 19 FOG W/VIS <= 1/4 MILE 1  
HAZE 7  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
================================================================  
SOUTHEAST MICHIGAN CLIMATE SUMMARY FOR DECEMBER 2024  
 
DECEMBER 2024 MONTHLY STATISTICS AND RANKINGS  
-----------------------------------------------------------------  
 
SNOWFALL  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 3.6" 8.9" -5.3" 30TH LEAST SNOWY  
FLINT AREA 10.8" 11.4" -0.6" 31ST SNOWIEST  
SAGINAW AREA 9.8" 11.8" -2.0" 41ST SNOWIEST  
 
SNOWFALL SINCE JULY 1*  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 5.4" 10.8" -5.4" 28TH LEAST SNOWY  
FLINT AREA 12.5" 15.0" -2.5" 46TH SNOWIEST  
SAGINAW AREA 9.9" 15.3" -5.4" 49TH LEAST SNOWY  
 
*NORMAL TO DATE (AS OF DECEMBER 31, 2024)  
 
PRECIPITATION  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 3.27" 2.25" +1.02" 32ND WETTEST  
FLINT AREA 2.68" 1.89" +0.79" 19TH WETTEST  
SAGINAW AREA 2.50" 1.85" +0.65" 27TH WETTEST  
 
PRECIPITATION SINCE JANUARY 1*  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 32.46" 34.32" -1.86" 76TH DRIEST  
FLINT AREA 33.15" 31.97" +1.18" 35TH WETTEST  
SAGINAW AREA 25.98" 32.12" -6.14" 26TH DRIEST  
 
*NORMAL TO DATE (AS OF DECEMBER 31, 2024)  
 
AVERAGE TEMPERATURE  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 33.3 31.3 +2.0 33RD WARMEST  
FLINT AREA 31.5 28.7 +2.8 26TH WARMEST  
SAGINAW AREA 30.5 28.9 +1.6 33RD WARMEST  
 
AVERAGE HIGH TEMPERATURE  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 39.0 37.2 +1.8 38TH WARMEST  
FLINT AREA 37.5 34.9 +2.6 29TH WARMEST  
SAGINAW AREA 36.4 34.7 +1.7 31ST WARMEST  
 
AVERAGE LOW TEMPERATURE  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 27.5 25.3 +2.2 33RD WARMEST  
FLINT AREA 25.5 22.5 +3.0 28TH WARMEST  
SAGINAW AREA 24.6 23.1 +1.5 33RD WARMEST  
 
DETROIT AREA HAS A CLIMATE RECORD DATING TO NOVEMBER 1874 (~151 YEARS)  
FLINT AREA HAS A CLIMATE RECORD DATING TO JANUARY 1921 (~104 YEARS)  
SAGINAW AREA HAS CLIMATE RECORD DATING TO JANUARY 1912 (~113 YEARS)  
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