114  
CDUS43 KDMX 180636  
CLIALO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
136 AM CDT MON AUG 18 2025  
   
...............................
 
 
   
..THE WATERLOO IA CLIMATE SUMMARY FOR AUGUST 17 2025
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1895 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 89 223 PM 105 1988 83 6 82  
MINIMUM 70 534 AM 46 1962 61 9 66  
AVERAGE 80 72 8 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.35 1.42 1938 0.15 0.20 0.02  
MONTH TO DATE 2.55 2.31 0.24 0.61  
SINCE JUN 1 19.08 12.37 6.71 13.24  
SINCE JAN 1 30.12 25.24 4.88 32.48  
 
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 0 0 0  
MONTH TO DATE 0 0 0 3  
SINCE JUN 1 6 21 -15 4  
SINCE JUL 1 0 3 -3 4  
 
COOLING  
YESTERDAY 15 7 8 9  
MONTH TO DATE 143 137 6 125  
SINCE JUN 1 704 646 58 655  
SINCE JAN 1 750 718 32 691    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 8.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 200 AM  
LOWEST 72 100 PM  
AVERAGE 84  
   
......................................................
 
 
THE WATERLOO IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 110 1936  
MINIMUM TEMPERATURE (F) 61 43 1977  
2012  
 
SUNRISE AND SUNSET  
AUGUST 18 2025........SUNRISE 620 AM CDT SUNSET 806 PM CDT  
AUGUST 19 2025........SUNRISE 621 AM CDT SUNSET 804 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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