266  
CDUS43 KDMX 290628  
CLIMCW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
128 AM CDT MON SEP 29 2025  
   
...............................  
 
   
..THE MASON CITY IA CLIMATE SUMMARY FOR SEPTEMBER 28 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1893 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 81 406 PM 88 2024 69 12 88  
MINIMUM 40 611 AM 20 1942 44 -4 52  
AVERAGE 61 57 4 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.29 1929 0.11 -0.11 0.00  
MONTH TO DATE 1.12 3.24 -2.12 0.43  
SINCE SEP 1 1.12 3.24 -2.12 0.43  
SINCE JAN 1 32.94 30.55 2.39 28.69  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM 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 4 9 -5 0  
MONTH TO DATE 76 142 -66 63  
SINCE SEP 1 76 142 -66 63  
SINCE JUL 1 106 178 -72 84  
 
COOLING  
YESTERDAY 0 1 -1 5  
MONTH TO DATE 78 55 23 88  
SINCE SEP 1 78 55 23 88  
SINCE JAN 1 716 594 122 607    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 2.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 300 AM  
LOWEST 21 300 PM  
AVERAGE 59  
   
......................................................  
 
THE MASON CITY IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 88 1922  
2023  
MINIMUM TEMPERATURE (F) 43 24 1945  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2025.....SUNRISE 709 AM CDT SUNSET 657 PM CDT  
SEPTEMBER 30 2025.....SUNRISE 710 AM CDT SUNSET 656 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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