570  
CDUS43 KDMX 170632  
CLIMCW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
132 AM CDT SUN AUG 17 2025  
   
...............................
 
 
   
..THE MASON CITY IA CLIMATE SUMMARY FOR AUGUST 16 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 90 421 PM 101 1937 80 10 77  
MINIMUM 68 444 AM 43 1992 58 10 64  
AVERAGE 79 69 10 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.77 1980 0.12 -0.12 T  
MONTH TO DATE 1.17 1.98 -0.81 1.06  
SINCE JUN 1 18.12 11.80 6.32 11.87  
SINCE JAN 1 28.82 25.50 3.32 27.73  
 
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 JUN 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 0 1 -1 0  
MONTH TO DATE 3 6 -3 13  
SINCE JUN 1 19 55 -36 25  
SINCE JUL 1 6 16 -10 16  
 
COOLING  
YESTERDAY 14 5 9 6  
MONTH TO DATE 93 88 5 66  
SINCE JUN 1 551 442 109 411  
SINCE JAN 1 578 480 98 428    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 6.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1000 PM  
LOWEST 70 200 PM  
AVERAGE 85  
   
......................................................
 
 
THE MASON CITY IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 101 1988  
MINIMUM TEMPERATURE (F) 58 44 2012  
 
SUNRISE AND SUNSET  
AUGUST 17 2025........SUNRISE 622 AM CDT SUNSET 812 PM CDT  
AUGUST 18 2025........SUNRISE 623 AM CDT SUNSET 811 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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