508  
CXUS53 KDTX 111341 AAA  
CLMDTW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
515 AM EDT TUE OCT 2 2018  
   
...............................
 
 
   
..THE DETROIT MI CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1874 TO 2018  
 
WEATHER OBSERVED NORMAL DEPART  
VALUE DATE(S) VALUE FROM  
NORMAL    
............................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 100 09/03/1953  
09/02/1953  
09/15/1939  
LOW 29 09/23/1974  
HIGHEST 93 09/05 MM MM  
LOWEST 45 09/29 MM MM  
AVG. MAXIMUM 77.5 74.0 3.5  
AVG. MINIMUM 60.4 54.7 5.7  
MEAN 68.9 64.4 4.5  
DAYS MAX >= 90 5 0.5 4.5  
DAYS MAX <= 32 0 0.0 0.0  
DAYS MIN <= 32 0 0.0 0.0  
DAYS MIN <= 0 0 0.0 0.0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 7.52 1986  
MINIMUM 0.39 1877  
TOTALS 6.46 3.27 3.19  
DAILY AVG. 0.22 0.11 0.11  
DAYS >= .01 13 9.5 3.5  
DAYS >= .10 6 5.9 0.1  
DAYS >= .50 4 2.2 1.8  
DAYS >= 1.00 2 0.7 1.3  
GREATEST  
24 HR. TOTAL 2.51 09/25 TO 09/25  
STORM TOTAL MM  
(MM/DD(HH)) MM  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 0.0 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 MM  
24 HR TOTAL 0.0 09/30 TO 09/30  
STORM TOTAL MM  
(MM/DD(HH)) MM  
 
DEGREE_DAYS  
HEATING TOTAL 61 104 -43  
SINCE 7/1 61 114 -53  
COOLING TOTAL 187 84 103  
SINCE 1/1 1202 795 407  
 
FREEZE DATES  
RECORD  
EARLIEST MM  
LATEST MM  
EARLIEST MM  
LATEST MM    
.............................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 7.6  
HIGHEST WIND SPEED/DIRECTION 32/260 DATE 09/21  
HIGHEST GUST SPEED/DIRECTION 39/230 DATE 09/21  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.70  
NUMBER OF DAYS FAIR 2  
NUMBER OF DAYS PC 15  
NUMBER OF DAYS CLOUDY 13  
 
AVERAGE RH (PERCENT) 71  
 
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
---------------------------------------------------------------  
MONTHLY CLIMATE DATA FOR NWS WHITE LAKE - SEPTEMBER 2018  
   
..TEMPERATURE DATA... ...PRECIPITATION DATA
 
 
AVERAGE MAXIMUM...72.0 MONTHLY TOTAL..........3.28  
AVERAGE MINIMUM...53.1 GREATEST DAILY TOTAL...0.94  
MONTHLY AVERAGE...62.5 ON THE 20TH  
2018 TOTAL.............27.68  
   
..HEATING DEGREE DAYS... ...SNOWFALL DATA
 
 
MONTHLY TOTAL............156 MONTHLY TOTAL............0.0  
2018-2019 SEASON TOTAL...178 2018-2019 SEASON TOTAL...0.0  
   
..COOLING DEGREE DAYS
 
 
MONTHLY TOTAL....90  
2018 TOTAL......421  
 
================================================================  
 
SOUTHEAST MICHIGAN CLIMATE SUMMARY FOR SEPTEMBER 2018  
 
SEPTEMBER 2018 MONTHLY STATISTICS AND RANKINGS  
-----------------------------------------------------------------  
 
PRECIPITATION  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 6.46" 3.27" +3.19" 4TH WETTEST  
FLINT AREA 3.36" 3.75" -0.39" 36TH WETTEST  
SAGINAW 1.81" 3.83" -2.02" 27TH WETTEST  
 
PRECIPITATION SINCE JANUARY 1*  
 
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 33.96" 25.70" +8.26" 4TH WETTEST  
FLINT AREA 28.85" 24.31" +4.54" 15TH WETTEST  
SAGINAW 24.06" 24.35" -0.29" 47TH WETTEST  
 
*NORMAL TO DATE (AS OF SEPTEMBER 30, 2018)  
 
AVERAGE TEMPERATURE  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 68.9 64.4 +4.5 5TH WARMEST  
FLINT AREA 64.8 61.1 +3.7 18TH WARMEST  
SAGINAW 65.1 61.3 +3.8 13TH WARMEST  
 
AVERAGE HIGH TEMPERATURE  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 77.5 74.0 +3.5 12TH WARMEST  
FLINT AREA 74.3 72.3 +2.0 35TH WARMEST  
SAGINAW 74.0 72.1 +1.9 28TH WARMEST  
 
AVERAGE LOW TEMPERATURE  
ACTUAL NORMAL DEPARTURE RANKING  
DETROIT AREA 60.4 54.7 +5.7 4TH WARMEST  
FLINT AREA 55.2 49.9 +5.3 8TH WARMEST  
SAGINAW 56.1 50.5 +5.6 6TH WARMEST  
 
DETROIT AREA HAS A CLIMATE RECORD DATING TO NOVEMBER 1874  
FLINT AREA HAS A CLIMATE RECORD DATING TO JANUARY 1921  
SAGINAW HAS A CLIMATE RECORD DATING TO 1912  
 
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