612  
CDUS43 KDMX 172231  
CLIALO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
531 PM CDT THU SEP 17 2026  
   
...............................  
 
   
..THE WATERLOO IA CLIMATE SUMMARY FOR SEPTEMBER 17 2026  
 
VALID TODAY AS OF 0520 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1895 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 73 205 PM 95 1925 77 -4 77  
1988  
MINIMUM 65 537 AM 32 1916 52 13 61  
AVERAGE 69 64 5 69  
 
PRECIPITATION (IN)  
TODAY 0.79 3.06 1914 0.10 0.69 0.05  
MONTH TO DATE 2.74 1.84 0.90 0.52  
SINCE SEP 1 2.74 1.84 0.90 0.52  
SINCE JAN 1 32.52 28.94 3.58 31.18  
 
SNOWFALL (IN)  
TODAY 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  
TODAY 0 4 -4 0  
MONTH TO DATE 16 37 -21 50  
SINCE SEP 1 16 37 -21 50  
SINCE JUL 1 17 50 -33 65  
 
COOLING  
TODAY 4 3 1 4  
MONTH TO DATE 117 70 47 81  
SINCE SEP 1 117 70 47 81  
SINCE JAN 1 945 876 69 888    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 4.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 84 300 PM  
AVERAGE 92  
   
......................................................  
 
THE WATERLOO IA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 93 1955  
MINIMUM TEMPERATURE (F) 52 28 1929  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2026.....SUNRISE 652 AM CDT SUNSET 716 PM CDT  
SEPTEMBER 18 2026.....SUNRISE 653 AM CDT SUNSET 714 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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