Monthly weather forecast and climate
Jackson, MT

Weather in January

January, the same as December, in Jackson, Montana, is a freezing cold winter month, with average temperature fluctuating between 27.3°F (-2.6°C) and 9.5°F (-12.5°C). In January, the average high-temperature is practically the same as in December - a still subzero cold 27.3°F (-2.6°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Jackson, Montana, with average temperature fluctuating between 10.8°F (-11.8°C) and 27.9°F (-2.3°C). In February, the average high-temperature is relatively the same as in January - a still freezing cold 27.9°F (-2.3°C). Weather in February »

Weather in March

March, the first month of the spring, in Jackson, is a wintry month, with average temperature ranging between min 17.8°F (-7.9°C) and max 34°F (1.1°C). In March, the average high-temperature slightly increases, from a freezing cold 27.9°F (-2.3°C) in February, to a cold 34°F (1.1°C). Weather in March »

Weather in April

April, like March, in Jackson, Montana, is another cold spring month, with average temperature varying between 25°F (-3.9°C) and 41.9°F (5.5°C). In April, the average high-temperature marginally rises, from 34°F (1.1°C) in March, to a still wintry 41.9°F (5.5°C). Weather in April »

Weather in May

May, the last month of the spring, in Jackson, is a fresh month, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 54.1°F (12.3°C). In May, the average high-temperature rises, from a cold 41.9°F (5.5°C) in April, to a fresh 54.1°F (12.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Jackson, is a comfortable month, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 39.9°F (4.4°C). In Jackson, the average high-temperature rises, from a fresh 54.1°F (12.3°C) in May, to an enjoyable 64.4°F (18°C). Weather in June »

Weather in July

July in Jackson, Montana, is a warm summer month, with average temperature fluctuating between 75.7°F (24.3°C) and 47.3°F (8.5°C). July is the warmest month, with an average high-temperature of 75.7°F (24.3°C) and an average low-temperature of 47.3°F (8.5°C). Weather in July »

Weather in August

August, the last month of the summer, in Jackson, is another warm month, with temperature in the range of an average high of 74.7°F (23.7°C) and an average low of 47.5°F (8.6°C). In August, the average high-temperature is practically the same as in July - a still warm 74.7°F (23.7°C). Weather in August »

Weather in September

September, the first month of the autumn, in Jackson, is still a comfortable month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 40.6°F (4.8°C). In Jackson, the average high-temperature drops, from a moderately hot 74.7°F (23.7°C) in August, to an enjoyable 65.3°F (18.5°C). Weather in September »

Weather in October

October, the same as September, in Jackson, Montana, is a frosty autumn month, with average temperature varying between 30.4°F (-0.9°C) and 48.7°F (9.3°C). In October, the average high-temperature declines considerably, from an enjoyable 65.3°F (18.5°C) in September, to a chilly 48.7°F (9.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Jackson, Montana, with average temperature ranging between min 19.2°F (-7.1°C) and max 35.2°F (1.8°C). In Jackson, the average high-temperature decreases, from a frosty 48.7°F (9.3°C) in October, to a cold 35.2°F (1.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Jackson, Montana, with average temperature varying between 25.2°F (-3.8°C) and 9.5°F (-12.5°C). With an average high-temperature of 25.2°F (-3.8°C) and an average low-temperature of 9.5°F (-12.5°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in Jackson?

Throughout the year, there are 129.5 rainfall days, and 12.4" (315mm) of precipitation is accumulated.

When does it snow in Jackson?

January through May, September through December are months with snowfall in Jackson, Montana.

How much does it snow in Jackson?

Throughout the year, in Jackson, there are 63.5 snowfall days, and 22.76" (578mm) of snow is accumulated.

What is the month with the least sunshine in Jackson?

The month with the least sunshine is January, with an average of 5.1h of sunshine.

When is the lowest UV index in Jackson?

Months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

What is the most humid month in Jackson?

February is the most humid month in Jackson, with an average relative humidity of 89%.

When does it snow the most in Jackson?

The month with the most snowfall in Jackson, Montana, is February when snow falls for 12.3 days and typically aggregates up to 5" (127mm) of snow.

What is the wettest month in Jackson?

June is the month with the most rainfall in Jackson, Montana. Rain falls for 14.9 days and accumulates 2.05" (52mm) of precipitation.

When it does not snow in Jackson?

June through August are months without snowfall.

When are the longest days in Jackson?

June has the longest days of the year, with an average of 15.6h of daylight.

What is the warmest month in Jackson?

With an average high-temperature of 75.7°F (24.3°C) and an average low-temperature of 47.3°F (8.5°C), July is the warmest month in Jackson.

What is the driest month in Jackson?

Months with the least rainfall in Jackson are July and August Rain falls for 7.8 days and accumulates 0.51" (13mm) of rain.

What month has the most sunshine in Jackson?

The month with the most sunshine is July, with an average of 11.8h of sunshine.

What is the month with the highest UV index in Jackson?

With an average maximum UV index of 5, July is the month with the highest UV index in Jackson, Montana.

What is the least humid month in Jackson?

The least humid month is August, with an average relative humidity of 43%.

What is the coldest month in Jackson?

With an average high-temperature of 25.2°F (-3.8°C) and an average low-temperature of 9.5°F (-12.5°C), December is the coldest month in Jackson, Montana.

What is the month with the shortest days in Jackson?

With an average of 8.8h of daylight, December has the shortest days of the year in Jackson, Montana.

Average temperature
Jackson, MT

Average temperature - Jackson, MT

The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (25.2°F).

The month with the highest average low temperature is August (47.5°F).
The coldest months (with the lowest average low temperature) are January and December (9.5°F).

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Average pressure
Jackson, MT

Average pressure - Jackson, MT

The month with the highest atmospheric pressure is January (30.25").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed
Jackson, MT

Average wind speed - Jackson, MT

The windiest months (with the highest average wind speed) are March and April (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average rainfall
Jackson, MT

Average rainfall - Jackson, MT

The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are July and August (0.51").

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Average rainfall days
Jackson, MT

Average rainfall days - Jackson, MT

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall days
Jackson, MT

Average snowfall days - Jackson, MT

The month with the highest number of snowfall days is February (12.3 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Jackson, MT

Average daylight / Average sunshine - Jackson, MT

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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Average sunshine days
Jackson, MT

Average sunshine days - Jackson, MT

The month with the most sunshine days is July (19.4 days).
The month with the least sunshine days is April (7.7 days).

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Average visibility
Jackson, MT

Average visibility - Jackson, MT

Months with the highest visibility are May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February, March and December (4mi).

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