943
CXUS53 KDTX 021438 RRB
CLMMBS
CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1038 AM EDT THU OCT 02 2025
...............................
...THE TRI CITIES MI CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
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 100 09/01/1953
09/11/1931
LOW 27 09/28/1991
09/29/1942
HIGHEST 87 09/18 MM MM
LOWEST 40 09/08 MM MM
AVG. MAXIMUM 74.9 73.3 1.6
AVG. MINIMUM 53.3 51.6 1.7
MEAN 64.1 62.5 1.6
DAYS MAX >= 90 0 0.6 -0.6
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 0 0.2 -0.2
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 16.16 1986
MINIMUM T 1979
TOTALS 2.44 2.81 -0.37
DAILY AVG. 0.08 0.09 -0.01
DAYS >= .01 6 9.7 -3.7
DAYS >= .10 3 5.5 -2.5
DAYS >= .50 2 1.9 0.1
DAYS >= 1.00 2 0.6 1.4
GREATEST
24 HR. TOTAL 1.17 09/18 TO 09/18
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0 0
TOTALS 0.0 0.0 0.0
LIQUID EQUIV 0.00 0.00 0.00
SINCE 7/1 0.0 0.0 0.0
LIQUID 7/1 0.00
DAYS >= TRACE 0 0.0 0.0
DAYS >= 1.0 0 0.0 0.0
GREATEST
SNOW DEPTH 0
DEGREE DAYS
HEATING TOTAL 62 136 -74
SINCE 7/1 96 165 -69
COOLING TOTAL 41 60 -19
SINCE 1/1 729 625 104
FREEZE DATES
RECORD
EARLIEST 09/12 (1943)
LATEST 05/28 (1949)
EARLIEST 10/17 (2024)
LATEST 04/30 (2025)
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WIND (MPH)
AVERAGE WIND SPEED 6.1
HIGHEST WIND SPEED/DIRECTION 35/250 DATE 09/05
HIGHEST GUST SPEED/DIRECTION 50/240 DATE 09/05
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.28
NUMBER OF DAYS FAIR 21
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 2
AVERAGE RH (PERCENT) 72
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 2
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 14 FOG W/VIS <= 1/4 MILE 8
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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SOUTHEAST MICHIGAN CLIMATE SUMMARY FOR SEPTEMBER 2025
SEPTEMBER 2025 MONTHLY STATISTICS AND RANKINGS
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PRECIPITATION
ACTUAL NORMAL DEPARTURE RANKING
DETROIT AREA 1.87" 3.22" -1.35" 53RD DRIEST
FLINT AREA 1.32" 2.90" -1.58" 17TH DRIEST
SAGINAW AREA 2.44" 2.81" -0.37" 50TH DRIEST
PRECIPITATION SINCE JANUARY 1*
ACTUAL NORMAL DEPARTURE RANKING
DETROIT AREA 25.49" 26.97" -1.48" 65TH WETTEST
FLINT AREA 20.93" 25.04" -4.11" 33RD DRIEST
SAGINAW AREA 20.41" 25.08" -4.67" 35TH DRIEST
*NORMAL TO DATE (AS OF SEPTEMBER 30, 2025)
AVERAGE TEMPERATURE
ACTUAL NORMAL DEPARTURE RANKING
DETROIT AREA 67.1 64.9 +2.2 23RD WARMEST
FLINT AREA 63.2 61.7 +1.5 36TH WARMEST
SAGINAW AREA 64.1 62.5 +1.6 23RD WARMEST
AVERAGE HIGH TEMPERATURE
ACTUAL NORMAL DEPARTURE RANKING
DETROIT AREA 77.9 74.4 +3.5 10TH WARMEST
FLINT AREA 76.8 73.1 +3.7 15TH WARMEST
SAGINAW AREA 74.9 73.3 +1.6 23RD WARMEST
AVERAGE LOW TEMPERATURE
ACTUAL NORMAL DEPARTURE RANKING
DETROIT AREA 56.2 55.5 +0.7 54TH WARMEST
FLINT AREA 49.5 50.4 -0.9 33RD COOLEST
SAGINAW AREA 53.3 51.6 +1.7 23RD WARMEST
DETROIT AREA HAS A CLIMATE RECORD DATING TO NOVEMBER 1874 (~151 YEARS)
FLINT AREA HAS A CLIMATE RECORD DATING TO JANUARY 1921 (~105 YEARS)
SAGINAW AREA HAS CLIMATE RECORD DATING TO JANUARY 1912 (~114 YEARS)
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