Cut Bank, Montana Climate

NOAA 1991-2020 normals for Cut Bank Muni AP, 4.9 km from Cut Bank

The warmest month is July, with an average high of 80°F; the coldest is January, with an average low of 11°F. A normal year brings 10.8 in of precipitation and 38.9 in of snow.

Temperature through the year

The normal daily high and low and the record for every date at Cut Bank (Awos) (CTB), since 1903. The line marks today.

Normal low
Normal high
Record high
Record low

Normals for Sep 25

Normal high: 65°F
Normal low: 37°F
Record high: 90°Fin 2014
Record low: -4°Fin 1934
Chance of a wet day: 20%
Daylight: 12 h 00 min

Month by month

Averages for 1991-2020. Wet days have at least 0.01 inch of precipitation. Freeze nights have a low of 32°F or colder; degree days are on a 65°F base. Each month links to its own page.

Month	Avg high	Avg low	Record high	Record low	Precipitation	Wet days	Snowfall	Freeze nights	Heating DD	Cooling DD
January	32°F	11°F	67°F (1962)	-46°F (1918)	0.22 in	4.2	7.3 in	27.8	1,339	0
February	34°F	12°F	71°F (1992)	-47°F (1936)	0.23 in	4.2	5.8 in	26.1	1,173	0
March	43°F	20°F	77°F (2004)	-34°F (2002)	0.36 in	5.9	6.9 in	27.3	1,049	0
April	52°F	28°F	87°F (1910)	-25°F (1935)	0.95 in	7.9	4.1 in	20.6	744	0
May	62°F	37°F	92°F (2025)	9°F (1954)	1.65 in	9.8	1.9 in	7.9	477	1
June	70°F	45°F	101°F (1941)	21°F (1910)	2.73 in	11.3	0.0 in	0.4	235	11
July	80°F	50°F	106°F (2007)	32°F (1999)	1.29 in	6.7	0.0 in	0.0	79	76
August	80°F	48°F	107°F (1961)	25°F (1910)	0.96 in	6.1	0.0 in	0.2	102	67
September	69°F	40°F	97°F (1967)	-4°F (1934)	1.08 in	6.5	0.5 in	4.1	326	8
October	54°F	30°F	88°F (1992)	-14°F (1919)	0.57 in	5.1	1.4 in	18.0	712	1
November	41°F	20°F	79°F (1962)	-33°F (1921)	0.42 in	4.8	5.5 in	24.3	1,032	0
December	33°F	13°F	67°F (1939)	-46°F (1924)	0.31 in	4.2	5.5 in	28.6	1,310	0
Year	54°F	29°F			10.77 in	77	38.9 in	186	8,579	164

Precipitation

Rain and melted snow together. The chance of a wet day is the share of days with at least 0.01 inch of precipitation.

10.8 in in a normal year, most in June.

Chance of a wet day

Chance of a wet day
Chance of snowfall

Snow

NOAA 1991-2020 snowfall normals for Shelby, 37.1 km away; Cut Bank Muni AP keeps no snowfall normals.

38.9 in of snow in a normal year.

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Cut Bank Muni AP. A median date has an even chance of a later freeze in spring, or an earlier one in fall.

The last spring freeze typically comes around May 24 and the first fall freeze around September 15, a growing season of about 113 days.

Median at 32°F: last May 24, first September 15
Median at 28°F: last May 11, first September 25

Frost dates, growing season and degree days

Growing degree days this year

Observed: NOAA GHCN-Daily highs and lows at Cut Bank (Awos) (CTB) (USW00024137), through September 22, 2026; GHCN trails the calendar by a day or more. Normal: NOAA’s 1991-2020 daily normals at the same station, NCEI’s own for base 50°F and the corn method, and for bases 41°F and 32°F computed here from NCEI’s daily mean and its standard deviation (Thom’s method).

Since January 1, Cut Bank has gathered 1,471 growing degree days on a 50°F base, 75 more than normal by September 22, 2026: about 100 days ahead of the normal season.

2026, observed
Normal

Base	Since Jan 1	Normal to date	Departure	Normal year
Base 50°F	1,471	1,396	+75 (+5%)	1,471
Corn, 86/50	1,922	1,822	+101 (+6%)	2,037
Base 41°F	2,887	2,753	+133 (+5%)	3,064
Base 32°F	4,705	4,412	+293 (+7%)	5,126

Base 50°F: The common base for warm-season crops, turf and most insect models; USA-NPN’s pest forecasts use it. Corn, 86/50: Modified growing degree days for corn: highs above 86°F count as 86 and lows below 50°F as 50 (Barger 1969; Purdue Extension). Base 41°F: 5°C, the base used for cool-season crops such as alfalfa and canola. Base 32°F: 0°C, the base USA-NPN uses for its accumulated temperature maps and for its hemlock woolly adelgid forecast. A day adds its mean temperature, (high + low) / 2, above the base; the corn method first holds the high and low between 50°F and 86°F. Corn typically needs 100 to 120 of those units from planting to emergence (Purdue Extension). The station missed 39 days this year; they are counted at normal.

With the forecast added Degree day map

Humidity and comfort

NASA POWER reanalysis, 1991-2020, for the grid cell around Cut Bank.

Days with a mean dew point of 65°F or more are rare here in every month.

Month	Dew point	Humidity	Dry	Comfortable	Humid	Muggy	Oppressive	Miserable
January	16°F	85%	100%	0%	0%	0%	0%	0%
February	17°F	81%	100%	0%	0%	0%	0%	0%
March	22°F	74%	100%	0%	0%	0%	0%	0%
April	28°F	67%	100%	0%	0%	0%	0%	0%
May	36°F	62%	100%	0%	0%	0%	0%	0%
June	43°F	62%	99%	1%	0%	0%	0%	0%
July	46°F	54%	97%	3%	0%	0%	0%	0%
August	44°F	51%	99%	1%	0%	0%	0%	0%
September	37°F	57%	100%	0%	0%	0%	0%	0%
October	30°F	67%	100%	0%	0%	0%	0%	0%
November	22°F	76%	100%	0%	0%	0%	0%	0%
December	16°F	82%	100%	0%	0%	0%	0%	0%

Comfort is judged by the day's mean dew point: dry below 55°F, comfortable to 60°F, humid to 65°F, muggy to 70°F, oppressive to 75°F, miserable above.

Clouds

Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.

The clearest month is July, with the sky 45 percent covered on average; the cloudiest is April, at 72 percent.

Wind

The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.

The windiest month is January, averaging 13.6 mph at 10 meters (33 feet) above the ground.

Daylight and sunshine

The longest day is Jun 17, with 16 h 09 min of daylight; the shortest is Dec 17, with 8 h 17 min.

Day length

Solar energy

Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.

Sunrise and sunset calendar

How Glacier County is running

NOAA NCEI Climate at a Glance, from the nClimGrid analysis of every station, updated early each month. A rank of 1 is the highest or lowest of all years since 1895.

August 2026 in Glacier County: 60.8°F (+0.5 °F against 1991-2020), the 36th warmest in 132 years on record.

August 2026 in Glacier County: 1.32 in (-0.06 in against 1991-2020), the 62nd driest in 132 years on record.

January to August 2026 in Glacier County: 44.9°F (+3.1 °F against 1991-2020), the 2nd warmest in 132 years on record.

January to August 2026 in Glacier County: 16.10 in (-0.56 in against 1991-2020), the 56th driest in 132 years on record.

Warmest August: 65.4°F in 2022
Coolest August: 53.1°F in 1907
Wettest August: 4.98 in in 1951
Driest August: 0.02 in in 1955

Every year since 1895

Montana climate and rankings

Month pages

The weather in Cut Bank in each month, day by day.

What this means

A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.

A record is the highest or lowest value on the date in every year the station has reported, back to 1903. It rests on one station, so a neighbor a few miles away can hold different ones.

Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.

More for this place

Nearby

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024137 (Cut Bank Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00024137, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus. Rankings: NOAA NCEI Climate at a Glance, public domain.