483  
CDUS43 KDMX 190639  
CLIALO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
139 AM CDT FRI SEP 19 2025  
   
...............................
 
 
   
..THE WATERLOO IA CLIMATE SUMMARY FOR SEPTEMBER 18 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 81 1200 PM 93 1955 76 5 89  
MINIMUM 60 503 AM 28 1929 52 8 62  
AVERAGE 71 64 7 76  
 
PRECIPITATION (IN)  
YESTERDAY T 1.34 1900 0.10 -0.10 0.00  
2018  
MONTH TO DATE 0.52 1.94 -1.42 0.10  
SINCE SEP 1 0.52 1.94 -1.42 0.10  
SINCE JAN 1 31.18 29.04 2.14 33.75  
 
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 0 4 -4 0  
MONTH TO DATE 50 41 9 16  
SINCE SEP 1 50 41 9 16  
SINCE JUL 1 65 54 11 22  
 
COOLING  
YESTERDAY 6 3 3 11  
MONTH TO DATE 87 73 14 90  
SINCE SEP 1 87 73 14 90  
SINCE JAN 1 894 879 15 912    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 5.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 400 AM  
LOWEST 60 1200 PM  
AVERAGE 80  
   
......................................................
 
 
THE WATERLOO IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 95 1925  
MINIMUM TEMPERATURE (F) 51 32 1991  
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2025.....SUNRISE 654 AM CDT SUNSET 712 PM CDT  
SEPTEMBER 20 2025.....SUNRISE 655 AM CDT SUNSET 710 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab IA Page Main Text Page