951  
CDUS43 KDMX 020645  
CLIOTM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
145 AM CDT TUE SEP 02 2025  
   
...............................
 
 
   
..THE OTTUMWA IA CLIMATE SUMMARY FOR SEPTEMBER 1 2025
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1920 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 440 PM 100 1984 82 -5 77  
MINIMUM 57 559 AM 42 1949 58 -1 54  
AVERAGE 67 70 -3 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.70 1931 0.13 -0.13 0.00  
MONTH TO DATE 0.00 0.13 -0.13 0.00  
SINCE SEP 1 0.00 0.13 -0.13 0.00  
SINCE JAN 1 16.57 27.26 -10.69 27.97  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 1 -1 0  
SINCE SEP 1 0 1 -1 0  
SINCE JUL 1 11 10 1 8  
 
COOLING  
YESTERDAY 2 6 -4 1  
MONTH TO DATE 2 6 -4 1  
SINCE SEP 1 2 6 -4 1  
SINCE JAN 1 878 869 9 811    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 5.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 400 AM  
LOWEST 40 500 PM  
AVERAGE 69  
   
......................................................
 
 
THE OTTUMWA IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 99 2000  
MINIMUM TEMPERATURE (F) 58 40 1946  
 
SUNRISE AND SUNSET  
SEPTEMBER 2 2025.....SUNRISE 638 AM CDT SUNSET 740 PM CDT  
SEPTEMBER 3 2025.....SUNRISE 639 AM CDT SUNSET 738 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