646  
CDUS43 KGRR 250525  
CLIGRR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI  
123 AM EDT MON SEP 25 2017  
 
   
...............................
 
 
   
..THE GRAND RAPIDS MI CLIMATE SUMMARY FOR SEPTEMBER 24 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1892 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 94R 328 PM 91 2007 70 24 70  
MINIMUM 62 443 AM 29 1976 49 13 52  
1950  
AVERAGE 78 59 19 61  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.39 1977 0.14 -0.14 0.00  
MONTH TO DATE 0.56 3.45 -2.89 1.52  
SINCE SEP 1 0.56 3.45 -2.89 1.52  
SINCE JAN 1 24.88 28.17 -3.29 33.06  
 
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 7 -7 4  
MONTH TO DATE 63 84 -21 12  
SINCE SEP 1 63 84 -21 12  
SINCE JUL 1 79 104 -25 12  
 
COOLING  
YESTERDAY 13 1 12 0  
MONTH TO DATE 112 61 51 95  
SINCE SEP 1 112 61 51 95  
SINCE JAN 1 684 686 -2 926    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 7.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE 100 PERCENT  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 500 AM  
LOWEST 28 400 PM  
AVERAGE 61  
   
......................................................
 
 
 
THE GRAND RAPIDS MI CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 90 1920  
1900  
MINIMUM TEMPERATURE (F) 49 29 1947  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 25 2017.....SUNRISE 733 AM EDT SUNSET 734 PM EDT  
SEPTEMBER 26 2017.....SUNRISE 734 AM EDT SUNSET 732 PM EDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab MI Page
The Nexlab IN Page Main Text Page