384  
CDUS43 KDMX 210711  
CLIALO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
211 AM CDT WED MAY 21 2025  
   
...............................  
 
   
..THE WATERLOO IA CLIMATE SUMMARY FOR MAY 20 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 58 102 PM 97 1934 74 -16 80  
MINIMUM 49 743 AM 31 1924 52 -3 63  
1954  
AVERAGE 54 63 -9 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.33 1.28 1933 0.15 0.18 0.91  
MONTH TO DATE 1.18 2.84 -1.66 5.74  
SINCE MAR 1 9.31 8.86 0.45 12.22  
SINCE JAN 1 9.85 11.10 -1.25 14.94  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE MAR 1 4.2 6.4 -2.2 4.9  
SINCE JUL 1 17.1 39.1 -22.0 32.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 11 4 7 0  
MONTH TO DATE 96 140 -44 74  
SINCE MAR 1 1185 1494 -309 1225  
SINCE JUL 1 5930 6664 -734 5447  
 
COOLING  
YESTERDAY 0 2 -2 7  
MONTH TO DATE 33 27 6 22  
SINCE MAR 1 42 35 7 26  
SINCE JAN 1 42 35 7 26    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 15.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1100 PM  
LOWEST 89 100 AM  
AVERAGE 95  
   
......................................................  
 
THE WATERLOO IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 93 1934  
MINIMUM TEMPERATURE (F) 52 33 1931  
 
SUNRISE AND SUNSET  
MAY 21 2025...........SUNRISE 542 AM CDT SUNSET 831 PM CDT  
MAY 22 2025...........SUNRISE 541 AM CDT SUNSET 832 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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