531
CDUS45 KTFX 180850
CLILWT
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
150 AM MST THU DEC 18 2025
...............................
..THE LEWISTOWN MT CLIMATE SUMMARY FOR DECEMBER 17 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1896 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 52 956 AM 65 1925 34 18 27
MINIMUM 17 1159 PM -30 1924 13 4 14
AVERAGE 35 24 11 21
PRECIPITATION (IN)
YESTERDAY 0.11 0.28 1967 0.01 0.10 T
MONTH TO DATE 1.01 0.26 0.75 0.20
SINCE OCT 1 2.57 2.20 0.37 1.11
SINCE JAN 1 17.04 16.92 0.12 19.62
SNOWFALL (IN)
YESTERDAY MM
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 30 41 -11 44
MONTH TO DATE 591 675 -84 547
SINCE DEC 1 591 675 -84 547
SINCE JUL 1 2230 2766 -536 2238
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 163 229 -66 298
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 54 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 76 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 24.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
LIGHT RAIN
SNOW
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 500 PM
LOWEST 32 200 PM
AVERAGE 64
......................................................
THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 62 1979
MINIMUM TEMPERATURE (F) 13 -37 1924
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 759 AM MST SUNSET 430 PM MST
DECEMBER 19 2025......SUNRISE 800 AM MST SUNSET 430 PM MST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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