Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KTFX 210734
CLIGTF
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
134 AM MDT SUN SEP 21 2025
...................................
...THE GREAT FALLS MT CLIMATE SUMMARY FOR SEPTEMBER 20 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 88 342 PM 93 1917 70 18 73
MINIMUM 45 516 AM 24 1995 42 3 44
AVERAGE 67 56 11 59
PRECIPITATION (IN)
YESTERDAY 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
SNOWFALL (IN)
YESTERDAY 0.0 1.3 1968 0.1 -0.1 0.0
MONTH TO DATE 0.0 0.3 -0.3 0.0
SINCE SEP 1 0.0 0.3 -0.3 0.0
SINCE JUL 1 0.0 0.6 -0.6 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 2 1 1 0
MONTH TO DATE 28 24 4 43
SINCE SEP 1 28 24 4 43
SINCE JAN 1 327 307 20 367
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 10.1
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
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 TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 90 1917
MINIMUM TEMPERATURE (F) 41 20 1995
SUNRISE AND SUNSET
SEPTEMBER 21 2025.....SUNRISE 711 AM MDT SUNSET 724 PM MDT
SEPTEMBER 22 2025.....SUNRISE 713 AM MDT SUNSET 722 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$