614  
CXUS53 KDMX 011434  
CLMALO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
931 AM CDT MON MAY 1 2017  
   
...............................
 
 
   
..THE WATERLOO IA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1895 TO 2017  
 
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 79 04/09 81 -2 80 04/16  
LOWEST 23 04/07 19 4 16 04/09  
AVG. MAXIMUM 61.9 60.6 1.3 59.7  
AVG. MINIMUM 40.6 37.2 3.4 38.4  
MEAN 51.3 48.9 2.4 49.1  
DAYS MAX >= 90 0 0.1 -0.1 0  
DAYS MAX <= 32 0 0.1 -0.1 0  
DAYS MIN <= 32 5 8.5 -3.5 9  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 10.79 2008  
MINIMUM 0.28 1942  
TOTALS 3.51 3.71 -0.20 2.60  
DAILY AVG. 0.12 0.12 0.00 0.09  
DAYS >= .01 13 10.9 2.1 13  
DAYS >= .10 8 7.0 1.0 7  
DAYS >= .50 3 2.4 0.6 1  
DAYS >= 1.00 0 0.7 -0.7 0  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 10.3 5  
0  
-26215  
TOTALS 0.0 1.8 -1.8 T  
SINCE 7/1 26.2 35.3 -9.1 46.0  
SNOWDEPTH AVG. 0 MM MM 0  
DAYS >= 1.0 0 0.6 -0.6 0  
GREATEST  
SNOW DEPTH 0 MM 0 MM  
24 HR TOTAL 0.0 04/30 TO 04/30  
 
DEGREE_DAYS  
HEATING TOTAL 412 491 -79 473  
SINCE 7/1 5791 6816 -1025 5918  
COOLING TOTAL 6 8 -2 3  
SINCE 1/1 6 8 -2 3    
.............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 10.6  
HIGHEST WIND SPEED/DIRECTION 32/060 DATE 04/30  
HIGHEST GUST SPEED/DIRECTION 39/050 DATE 04/30  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.50  
NUMBER OF DAYS FAIR 11  
NUMBER OF DAYS PC 12  
NUMBER OF DAYS CLOUDY 7  
 
AVERAGE RH (PERCENT) 68  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 4 RAIN 7  
LIGHT RAIN 14 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 SLEET 0  
FOG 17 FOG W/VIS <= 1/4 MILE 0  
HAZE 5  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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