961  
CDUS43 KDMX 300637  
CLIMIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
137 AM CDT SAT AUG 30 2025  
   
...............................
 
 
   
..THE MARSHALLTOWN IA CLIMATE SUMMARY FOR AUGUST 29 2025
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 9999 TO 9999  
 
WEATHER ITEM OBSERVED TIME NORMAL DEPARTURE LAST  
VALUE (LST) VALUE FROM YEAR  
NORMAL    
...................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 81 415 PM 79 2 93  
MINIMUM 58 549 AM 57 1 70  
AVERAGE 70 68 2 82  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.12 -0.12  
MONTH TO DATE 2.99 3.63 -0.64  
SINCE JAN 1 28.47 24.11 4.36  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 18 11 7 7  
SINCE JUN 1 26 44 -18 10  
SINCE JUL 1 18 18 0 9  
 
COOLING  
YESTERDAY 5 4 1 17  
MONTH TO DATE 184 171 13 219  
SINCE JUN 1 711 584 127 703  
SINCE JAN 1 736 638 98 742    
...................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 3.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 100 AM  
LOWEST 51 400 PM  
AVERAGE 74  
   
......................................................
 
 
THE MARSHALLTOWN IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 MM MM  
MINIMUM TEMPERATURE (F) 56 MM MM  
 
SUNRISE AND SUNSET  
AUGUST 30 2025........SUNRISE 635 AM CDT SUNSET 748 PM CDT  
AUGUST 31 2025........SUNRISE 636 AM CDT SUNSET 746 PM CDT  
 
- 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 IA Page Main Text Page