035  
CXUS53 KDMX 011532  
CLMALO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
1008 AM CDT TUE MAY 1 2018  
   
...............................
 
 
   
..THE WATERLOO IA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1895 TO 2018  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 100 04/22/1980  
LOW -4 04/06/1982  
HIGHEST 83 04/30 81 2 79 04/09  
LOWEST 11 04/04 19 -8 23 04/07  
AVG. MAXIMUM 50.1 60.6 -10.5 61.9  
AVG. MINIMUM 26.0 37.2 -11.2 40.6  
MEAN 38.1 48.9 -10.8 51.3  
DAYS MAX >= 90 0 0.1 -0.1 0  
DAYS MAX <= 32 4 0.1 3.9 0  
DAYS MIN <= 32 21 8.5 12.5 5  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 10.79 2008  
MINIMUM 0.28 1942  
TOTALS 1.73 3.71 -1.98 3.51  
DAILY AVG. 0.06 0.12 -0.06 0.12  
DAYS >= .01 9 10.9 -1.9 13  
DAYS >= .10 6 7.0 -1.0 8  
DAYS >= .50 0 2.4 -2.4 3  
DAYS >= 1.00 0 0.7 -0.7 0  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 12.1 2018  
TOTALS 12.1R 1.8 10.3 0.0  
SINCE 7/1 45.6 35.3 10.3 26.2  
SNOWDEPTH AVG. 0 MM MM 0  
DAYS >= 1.0 3 0.6 2.4 0  
GREATEST  
SNOW DEPTH 4 04/09 0 MM  
24 HR TOTAL 4.4 04/08 TO 04/08  
 
DEGREE_DAYS  
HEATING TOTAL 801 491 310 412  
SINCE 7/1 7246 6816 430 5791  
COOLING TOTAL 1 8 -7 6  
SINCE 1/1 1 8 -7 6    
.............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 11.0  
HIGHEST WIND SPEED/DIRECTION 41/070 DATE 04/14  
HIGHEST GUST SPEED/DIRECTION 52/070 DATE 04/14  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.40  
NUMBER OF DAYS FAIR 17  
NUMBER OF DAYS PC 7  
NUMBER OF DAYS CLOUDY 6  
 
AVERAGE RH (PERCENT) 68  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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