335  
CXUS55 KTFX 010915  
CLMGTF  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
314 AM MDT MON MAY 1 2017  
   
...............................
 
 
   
..THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1886 TO 2017  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
.........................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 89 04/20/1980  
LOW -10 04/02/1936  
HIGHEST 72 04/06 60 12 79  
LOWEST 21 04/04 27 -6 24  
AVG. MAXIMUM 55.7 55.6 0.1 59.3  
AVG. MINIMUM 32.1 30.5 1.6 33.6  
MEAN 43.9 43.1 0.8 46.4  
DAYS MAX >= 90 0 0.0 0.0  
DAYS MAX <= 32 0 0.9 -0.9  
DAYS MIN <= 32 15 17.6 -2.6  
DAYS MIN <= 0 0 0.2 -0.2  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 4.63 1975  
MINIMUM 0.05 1981  
TOTALS 3.58 1.42 2.16 2.83  
DAYS >= .01 13 9.4 3.6  
DAYS >= .10 9 3.9 5.1  
DAYS >= .50 1 0.7 0.3  
DAYS >= 1.00 1 0.1 0.9  
GREATEST  
24 HR. TOTAL 1.08 04/09 TO 04/09  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 35.4 2009  
1967  
24 HR TOTAL 17.0 04/19/1973 TO 04/20/1973  
TOTALS 5.0 8.6 -3.6 7.2  
SINCE 7/1 48.4 60.5 -12.1 46.9  
SNOWDEPTH AVG. 0  
DAYS >= TRACE 6 4.5 1.5  
DAYS >= 1.0 1 2.3 -1.3  
GREATEST  
SNOW DEPTH 4 04/10  
24 HR TOTAL 4.4 04/09 TO 04/09  
 
DEGREE_DAYS  
HEATING TOTAL 628 659 -31 549  
SINCE 7/1 7165 7117 48 6269  
COOLING TOTAL 0 1 -1 0  
SINCE 1/1 0 1 -1 0    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 11.0  
HIGHEST WIND SPEED/DIRECTION 44/240 DATE 04/07  
HIGHEST GUST SPEED/DIRECTION 54/220 DATE 04/07  
 
SKY COVER  
AVERAGE SKY COVER 0.50  
 
AVERAGE RH (PERCENT) 61  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 1  
HEAVY RAIN 1 RAIN 7  
LIGHT RAIN 18 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 1  
HEAVY SNOW 1 SNOW 1  
LIGHT SNOW 2 SLEET 1  
FOG 12 FOG W/VIS <= 1/4 MILE 2  
HAZE 2  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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