628
CDUS45 KTFX 180850
CLIGTF
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
150 AM MST THU DEC 18 2025
...............................
..THE GREAT FALLS MT CLIMATE SUMMARY FOR DECEMBER 17 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1886 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 54 613 AM 59 1976 35 19 27
MINIMUM 16 1122 PM -27 1924 16 0 16
1983
AVERAGE 35 25 10 22
PRECIPITATION (IN)
YESTERDAY 0.08 0.63 1973 0.01 0.07 0.00
MONTH TO DATE 0.31 0.28 0.03 T
SINCE OCT 1 1.77 2.03 -0.26 0.60
SINCE JAN 1 12.10 14.51 -2.41 13.35
SNOWFALL (IN)
YESTERDAY MM 5.5 1973 0.3 MM 0.0
MONTH TO DATE 2.6 4.9 -2.3 T
SINCE DEC 1 2.6 4.9 -2.3 T
SINCE JUL 1 10.7 20.4 -9.7 2.7
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 30 40 -10 43
MONTH TO DATE 513 647 -134 513
SINCE DEC 1 513 647 -134 513
SINCE JUL 1 1941 2587 -646 2082
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 333 310 23 385
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WIND (MPH)
HIGHEST WIND SPEED 53 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 71 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 23.1
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 800 AM
LOWEST 36 300 AM
AVERAGE 65
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THE GREAT FALLS MT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 58 1917
1979
MINIMUM TEMPERATURE (F) 16 -27 1924
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 809 AM MST SUNSET 436 PM MST
DECEMBER 19 2025......SUNRISE 809 AM MST SUNSET 436 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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