341  
CDUS43 KDVN 210621  
CLIIOW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE QUAD CITIES IA IL  
121 AM CDT SUN SEP 21 2025  
   
...............................  
 
   
..THE IOWA CITY IA CLIMATE SUMMARY FOR SEPTEMBER 20 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 9999 TO 9999  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 76 444 PM MM MM 76 0 91  
MINIMUM 59 454 AM MM MM 53 6 63  
AVERAGE 68 64 4 77  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 MM MM 0.11 -0.05 0.00  
MONTH TO DATE 0.38 2.24 -1.86 T  
SINCE SEP 1 0.38 2.24 -1.86 T  
SINCE JAN 1 21.89 28.08 -6.19 31.87  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 0  
MONTH TO DATE 37 35 2 16  
SINCE SEP 1 37 35 2 16  
SINCE JUL 1 48 41 7 21  
 
COOLING  
YESTERDAY 3 3 0 12  
MONTH TO DATE 120 89 31 98  
SINCE SEP 1 120 89 31 98  
SINCE JAN 1 1132 1008 124 1022    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 2.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 1100 PM  
LOWEST 62 500 PM  
AVERAGE 80  
   
......................................................  
 
THE IOWA CITY IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 MM MM  
MINIMUM TEMPERATURE (F) 52 MM MM  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2025.....SUNRISE 653 AM CDT SUNSET 705 PM CDT  
SEPTEMBER 22 2025.....SUNRISE 654 AM CDT SUNSET 703 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 IL Page
The Nexlab IA Page
The Nexlab MO Page
Main Text Page