418  
CDUS43 KDMX 040642  
CLIOTM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
142 AM CDT THU SEP 04 2025  
   
...............................
 
 
   
..THE OTTUMWA IA CLIMATE SUMMARY FOR SEPTEMBER 3 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 74 122 PM 100 1925 81 -7 76  
MINIMUM 49 1120 PM 40 1974 58 -9 48  
AVERAGE 62 70 -8 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.24 3.65 1926 0.12 0.12 0.00  
MONTH TO DATE 0.24 0.39 -0.15 0.00  
SINCE SEP 1 0.24 0.39 -0.15 0.00  
SINCE JAN 1 16.81 27.52 -10.71 27.97  
 
DEGREE DAYS  
HEATING  
YESTERDAY 3 1 2 3  
MONTH TO DATE 3 3 0 5  
SINCE SEP 1 3 3 0 5  
SINCE JUL 1 14 12 2 13  
 
COOLING  
YESTERDAY 0 6 -6 0  
MONTH TO DATE 4 18 -14 1  
SINCE SEP 1 4 18 -14 1  
SINCE JAN 1 880 881 -1 811    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 7.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 900 AM  
LOWEST 63 600 PM  
AVERAGE 78  
   
......................................................
 
 
THE OTTUMWA IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 103 1925  
MINIMUM TEMPERATURE (F) 57 43 1974  
 
SUNRISE AND SUNSET  
SEPTEMBER 4 2025.....SUNRISE 640 AM CDT SUNSET 737 PM CDT  
SEPTEMBER 5 2025.....SUNRISE 641 AM CDT SUNSET 735 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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