Climate and monthly weather forecast
Chinook, MT

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Weather in January

January, the same as December, in Chinook, Montana, is another subzero cold winter month, with an average temperature ranging between max 25.9°F (-3.4°C) and min -0.6°F (-18.1°C). In Chinook, the month of January is known for its lowest average temperatures, reaching a high of 25.9°F (-3.4°C) and a low of -0.6°F (-18.1°C). Weather in January »

Weather in February

February, the last month of the winter in Chinook, is a wintry month, with an average temperature fluctuating between 6.3°F (-14.3°C) and 33.4°F (0.8°C). The arrival of February signals a slight increase in the average high-temperature, moving from a subzero cold 25.9°F (-3.4°C) in January to a cold 33.4°F (0.8°C). Weather in February »

Weather in March

March, the first month of the spring in Chinook, is a chilly month, with an average temperature varying between 45.1°F (7.3°C) and 16.7°F (-8.5°C). March's arrival signals a temperature shift, moving from a wintry 33.4°F (0.8°C) in February to a chilly 45.1°F (7.3°C). Weather in March »

Weather in April

April in Chinook, Montana, is a mild spring month, with an average temperature fluctuating between 29.8°F (-1.2°C) and 58.8°F (14.9°C). The arrival of April brings a temperature shift, with the average high-temperature escalating from a chilly 45.1°F (7.3°C) in March to a moderate 58.8°F (14.9°C). Weather in April »

Weather in May

May, the last month of the spring in Chinook, is an agreeable month, with temperature in the range of an average high of 69.1°F (20.6°C) and an average low of 40.8°F (4.9°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a moderate 58.8°F (14.9°C) to an agreeable 69.1°F (20.6°C). Weather in May »

Weather in June

June, the first month of the summer in Chinook, is a moderately hot month, with an average temperature varying between 49.8°F (9.9°C) and 77.7°F (25.4°C). The beginning of June marks a minor shift in the average high-temperature, moving from May's agreeable 69.1°F (20.6°C) to a moderately hot 77.7°F (25.4°C). Weather in June »

Weather in July

July, like June, in Chinook, Montana, is another warm summer month, with an average temperature varying between 84°F (28.9°C) and 53.1°F (11.7°C). Chinook's July weather, marked by an average high temperature of 84°F (28.9°C) and an average low temperature of 53.1°F (11.7°C), is the warmest in the year. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Chinook, Montana, with an average temperature ranging between max 83.7°F (28.7°C) and min 51.4°F (10.8°C). August's commencement is accompanied by an average high-temperature of a still warm 83.7°F (28.7°C), diverging marginally from July's 84°F (28.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Chinook, Montana, with an average temperature fluctuating between 72.1°F (22.3°C) and 38.7°F (3.7°C). September's arrival correlates with a reduction in the average high-temperature, down from a warm 83.7°F (28.7°C) in August to an agreeable 72.1°F (22.3°C). Weather in September »

Weather in October

October, the same as September, in Chinook, Montana, is a moderate autumn month, with an average temperature ranging between min 27.1°F (-2.7°C) and max 59.2°F (15.1°C). A shift in Chinook's weather is observed as September turns into October, with the average high temperature reducing from a pleasant 72.1°F (22.3°C) to a refreshing 59.2°F (15.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Chinook, Montana, with an average temperature ranging between min 13.5°F (-10.3°C) and max 40.3°F (4.6°C). With the onset of November, Chinook's average high-temperature witnesses a clear drop, receding from October's refreshing 59.2°F (15.1°C) to a cold 40.3°F (4.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Chinook, Montana, with an average temperature fluctuating between 3.7°F (-15.7°C) and 29.7°F (-1.3°C). The arrival of December corresponds with a temperature reduction, down from November's wintry 40.3°F (4.6°C) to a freezing cold 29.7°F (-1.3°C). Weather in December »
Updated: Feb 13, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What are the coldest months in Chinook?

January tends to be the coldest month in Chinook, Montana, with temperatures averaging a daily high of 25.9°F (-3.4°C) and a low of -0.6°F (-18.1°C).

How much does it rain in Chinook?

Throughout the year, 13.07" (332mm) of rain is accumulated.

What is the driest month in Chinook?

February is the month with the least rainfall in Chinook, with 0.31" (8mm) of accumulated precipitation.

When is Daylight Saving Time (DST) in Chinook?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

What is the rainiest month in Chinook?

The months with the most rainfall are May and June, with an average 2.28" (58mm) of precipitation.

When are the longest days in Chinook?

June has the longest days of the year in Chinook, Montana, with an average of 16h and 6min of daylight.

What is the hottest time of year in Chinook?

The month of July, characterized by an average high of 84°F (28.9°C) and a low of 53.1°F (11.7°C), is recognized as the warmest.

What is the month with the shortest days in Chinook?

December has the shortest days of the year in Chinook, with an average of 8h and 24min of daylight.

Average temperature
Chinook, MT

Average temperature - Chinook, MT

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (25.9°F).

The month with the highest average low temperature is July (53.1°F).
The coldest month (with the lowest average low temperature) is January (-0.5°F).

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Average rainfall
Chinook, MT

Average rainfall - Chinook, MT

The wettest months (with the highest rainfall) are May and June (2.3").
The driest month (with the least rainfall) is February (0.3").

[Resources]

Average daylight
Chinook, MT

Average daylight - Chinook, MT

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

[Resources]

Chinook, Montana, USA

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