What is the hottest month in Choteau?

July is the warmest month in Choteau, with an average high of 82.0°F.

What is the coldest month in Choteau?

January is the coldest month in Choteau, with an average low of 13.4°F.

What month does Choteau get the most rain?

June is typically the wettest month in Choteau, with about 2.75 inches of precipitation.

What plant hardiness zone is Choteau in?

Choteau is approximately in USDA plant hardiness Zone 6b, based on the average annual extreme minimum temperature.

Has the climate in Choteau changed recently?

8.2% of Choteau's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Choteau, MT

Climate overview — based on NOAA 1991-2020 normals from CHOTEAU, MT US.

BSk Semi-arid (cold) climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Choteau has an annual average temperature of 43.8°F with about 11.9 inches of precipitation per year and 47.5 inches of snow. The warmest month is July (average high 82.0°F), and the coldest is January (average low 13.4°F). June is typically the wettest month (2.75 in) and January the driest (0.28 in). Snow typically falls from September through May.

Annual swing

39.8°F

warmest to coldest month

Heating need

7,623

HDD/yr

Cooling need

CDD/yr

Best time to visit Choteau

Full guide →

Climate change signal

All-time records →

30 of 366 (8.2%) of Choteau's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1890s		61
1900s		14
1910s		31
1920s		16
1930s		47
1940s		17
1950s		14
1960s		30
1970s		12
1980s		33
1990s		28
2000s		24
2010s		19
2020s		20

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	37.4°F	13.4°F	25.4°F	0.28 in	6.4 in	5
February	38.9°F	14.2°F	26.5°F	0.41 in	7.6 in	6
March	47.0°F	21.0°F	34.0°F	0.52 in	8.1 in	6
April	55.8°F	28.9°F	42.4°F	1.15 in	6.6 in	8
May	65.1°F	37.0°F	51.1°F	2.14 in	1.4 in	9
June	72.3°F	44.1°F	58.2°F	2.75 in	—	11
July	82.0°F	48.3°F	65.2°F	0.99 in	—	6
August	81.0°F	46.9°F	64.0°F	1.06 in	—	7
September	71.6°F	39.8°F	55.7°F	1.16 in	0.9 in	6
October	58.0°F	30.6°F	44.3°F	0.74 in	4.2 in	6
November	45.0°F	21.6°F	33.3°F	0.41 in	6.9 in	5
December	37.4°F	14.6°F	26.0°F	0.32 in	5.4 in	5