347  
CDUS45 KTFX 200733  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
133 AM MDT THU APR 20 2023  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR APRIL 19 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1896 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 31 100 AM 86 1910 54 -23 52  
MINIMUM 28 431 AM 3 1951 29 -1 30  
AVERAGE 30 42 -12 41  
 
PRECIPITATION (IN)  
YESTERDAY 0.59 0.66 1899 0.06 0.53 0.00  
MONTH TO DATE 2.19 1.02 1.17 0.50  
SINCE OCT 1 7.36 5.41 1.95 3.41  
SINCE JAN 1 4.68 2.96 1.72 1.65  
 
SNOWFALL (IN)  
YESTERDAY MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 24 11 24  
MONTH TO DATE 494 482 12 637  
SINCE MAR 1 1718 1479 239 1620  
SINCE JUL 1 7544 7245 299 7023  
 
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 24 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 20.0  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY SNOW  
SNOW  
LIGHT SNOW  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 1200 AM  
LOWEST 88 900 AM  
AVERAGE 92  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 84 1908  
MINIMUM TEMPERATURE (F) 30 0 1927  
 
SUNRISE AND SUNSET  
APRIL 20 2023.........SUNRISE 621 AM MDT SUNSET 813 PM MDT  
APRIL 21 2023.........SUNRISE 619 AM MDT SUNSET 815 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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