515  
CDUS45 KTFX 140736  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
136 AM MDT FRI MAY 14 2021  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR MAY 13 2021
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1896 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 62 314 PM 88 1903 62 0 57  
MINIMUM 39 1159 PM 15 1953 36 3 33  
AVERAGE 51 49 2 45  
 
PRECIPITATION (IN)  
YESTERDAY T 1.20 1974 0.09 -0.09 0.07  
MONTH TO DATE 1.48 0.95 0.53 1.97  
SINCE OCT 1 5.69 7.05 -1.36 7.15  
SINCE JAN 1 3.64 4.60 -0.96 4.50  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE T  
SINCE MAR 1 11.4  
SINCE JUL 1 65.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 16 -2 20  
MONTH TO DATE 249 234 15 277  
SINCE MAR 1 1862 1954 -92 2161  
SINCE JUL 1 7570 7720 -150 8082  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 6.5  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 1100 PM  
LOWEST 44 400 PM  
AVERAGE 65  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 98 1931  
MINIMUM TEMPERATURE (F) 37 25 1974  
2004  
 
SUNRISE AND SUNSET  
MAY 14 2021...........SUNRISE 543 AM MDT SUNSET 846 PM MDT  
MAY 15 2021...........SUNRISE 542 AM MDT SUNSET 847 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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