445  
CDUS43 KDMX 180633  
CLIMCW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
133 AM CDT SAT OCT 18 2025  
   
...............................
 
 
   
..THE MASON CITY IA CLIMATE SUMMARY FOR OCTOBER 17 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 74 1134 AM 85 1947 59 15 69  
MINIMUM 51 1139 PM 18 1952 36 15 31  
AVERAGE 63 48 15 50  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.23 1994 0.08 -0.08 0.00  
MONTH TO DATE 1.10 1.53 -0.43 T  
SINCE SEP 1 2.22 4.98 -2.76 0.43  
SINCE JAN 1 34.04 32.29 1.75 28.69  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.3 1990 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.1 -0.1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 17 -15 15  
MONTH TO DATE 110 234 -124 183  
SINCE SEP 1 186 398 -212 246  
SINCE JUL 1 216 434 -218 267  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 36 2 34 6  
SINCE SEP 1 122 59 63 97  
SINCE JAN 1 760 598 162 616    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 10.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 200 AM  
LOWEST 59 1200 PM  
AVERAGE 78  
   
......................................................
 
 
THE MASON CITY IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 59 85 1920  
MINIMUM TEMPERATURE (F) 36 17 1972  
 
SUNRISE AND SUNSET  
OCTOBER 18 2025.......SUNRISE 731 AM CDT SUNSET 625 PM CDT  
OCTOBER 19 2025.......SUNRISE 732 AM CDT SUNSET 623 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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