Climatological Report (Daily)
Issued by NWS
Issued by NWS
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573
CDUS45 KTFX 202240
CLIGTF
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT SAT SEP 20 2025
...................................
...THE GREAT FALLS MT CLIMATE SUMMARY FOR SEPTEMBER 20 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 87 259 PM 93 1917 70 17 73
MINIMUM 45 516 AM 24 1995 42 3 44
AVERAGE 66 56 10 59
PRECIPITATION (IN)
TODAY 0.00 0.72 1968 0.04 -0.04 0.00
MONTH TO DATE 0.26 0.90 -0.64 1.80
SINCE OCT 1 11.39 14.33 -2.94 14.85
SINCE JAN 1 10.31 12.05 -1.74 12.75
DEGREE DAYS
HEATING
TODAY 0 10 -10 6
MONTH TO DATE 46 141 -95 76
SINCE SEP 1 46 141 -95 76
SINCE JUL 1 89 255 -166 127
COOLING
TODAY 1 1 0 0
MONTH TO DATE 27 24 3 43
SINCE SEP 1 27 24 3 43
SINCE JAN 1 326 307 19 367
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 11.0
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 600 AM
LOWEST 14 100 PM
AVERAGE 47
..........................................................
THE GREAT FALLS MT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 90 1917
MINIMUM TEMPERATURE (F) 41 20 1995
SUNRISE AND SUNSET
SEPTEMBER 20 2025.....SUNRISE 710 AM MDT SUNSET 726 PM MDT
SEPTEMBER 21 2025.....SUNRISE 711 AM MDT SUNSET 724 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$