Climate and monthly weather forecast
Basin, MT

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Weather in January

January, like December, is another subzero cold winter month in Basin, Montana, with an average temperature fluctuating between 14.5°F (-9.7°C) and 29.7°F (-1.3°C). Basin's average high-temperature in January sits at a still freezing cold 29.7°F (-1.3°C), showing little difference from the previous month. Weather in January »

Weather in February

February, the last month of the winter in Basin, is also a subzero cold month, with an average temperature ranging between max 29.3°F (-1.5°C) and min 13.5°F (-10.3°C). With February's advent, Basin sees an average high-temperature of a still freezing cold 29.3°F (-1.5°C), subtly shifted from January's 29.7°F (-1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Basin, Montana, with an average temperature fluctuating between 38.7°F (3.7°C) and 21.6°F (-5.8°C). Basin's March weather shows an increase in high-temperatures, moving from February's subzero cold 29.3°F (-1.5°C) to a cold 38.7°F (3.7°C). Weather in March »

Weather in April

April in Basin, Montana, is a chilly spring month, with an average temperature fluctuating between 27°F (-2.8°C) and 46.4°F (8°C). The onset of April marks a slight increase in the average high-temperature, moving from a cold 38.7°F (3.7°C) in March to a frosty 46.4°F (8°C). Weather in April »

Weather in May

The last month of the spring, May, is a refreshing month in Basin, Montana, with an average temperature varying between 58.5°F (14.7°C) and 35.2°F (1.8°C). As Basin enters May, the average high-temperature increases from the a frosty 46.4°F (8°C) of April to a mild 58.5°F (14.7°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Basin, Montana, with an average temperature ranging between max 68.5°F (20.3°C) and min 42.4°F (5.8°C). As Basin transitions into June, the average high-temperature is observed to rise from a moderate 58.5°F (14.7°C) in May to a pleasant 68.5°F (20.3°C). Weather in June »

Weather in July

July in Basin, Montana, is a warm summer month, with an average temperature fluctuating between 79.7°F (26.5°C) and 48.4°F (9.1°C). In Basin, the month of July registers the highest temperatures, averaging 79.7°F (26.5°C) at the peak and 48.4°F (9.1°C) at the lowest. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Basin, Montana, with an average temperature fluctuating between 48.6°F (9.2°C) and 77.5°F (25.3°C). August's beginning signals an average high-temperature of a still warm 77.5°F (25.3°C), barely different from July's 79.7°F (26.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a refreshing month in Basin, Montana, with an average temperature varying between 42.4°F (5.8°C) and 67.5°F (19.7°C). As September commences, the average high-temperature shows a reduction, transitioning from a moderately hot 77.5°F (25.3°C) in August to a refreshing 67.5°F (19.7°C). Weather in September »

Weather in October

October, the same as September, is a cool autumn month in Basin, Montana, with an average temperature ranging between min 31.3°F (-0.4°C) and max 50.9°F (10.5°C). October's arrival signals a distinct temperature shift, dropping from an enjoyable 67.5°F (19.7°C) in September to a cool 50.9°F (10.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an icy month in Basin, Montana, with an average temperature ranging between min 21.2°F (-6°C) and max 36.9°F (2.7°C). The start of November signals a decrease in the average high-temperature, transitioning from a cool 50.9°F (10.5°C) in October to a cold 36.9°F (2.7°C). Weather in November »

Weather in December

December, the first month of the winter in Basin, is also a subzero cold month, with an average temperature varying between 12.6°F (-10.8°C) and 27°F (-2.8°C). December, on average, is the coldest month, registering a high temperature of 27°F (-2.8°C) and a low of 12.6°F (-10.8°C). Weather in December »

Frequently asked questions

What is the most humid month in Basin?

The most humid month is January, with an average relative humidity of 86%.

How many days does it rain?

Throughout the year, there are 133.7 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through June, September through December.

How much does it snow?

In Basin, Montana, during the entire year, snow falls for 105.8 days and aggregates up to 55.12" (1400mm) of snow.

What is the month with the least sunshine?

January and December, with an average of 5.6h of sunshine, are months with the least sunshine.

When does it snow the most?

The month with the most snowfall is February, when snow falls for 18 days and typically aggregates up to 9.72" (247mm) of snow.

When is the lowest UV index?

The month with the lowest UV index is February, with an average maximum UV index of 1.

When is Daylight Saving Time (DST)?

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?

The month with the most rainfall is June, when the rain falls for 16 days and typically aggregates up to 2.68" (68mm) of precipitation.

When are the longest days?

The month with the longest days is June, with an average of 15h and 42min of daylight.

What part of the year is the hottest?

With average temperatures fluctuating between a high of 79.7°F (26.5°C) and a low of 48.4°F (9.1°C), July stands out as the warmest month.

When it does not snow?

July and August are months without snowfall.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 11.7h of sunshine.

When is the highest UV index in Basin?

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the least humid month?

August is the least humid month, with an average relative humidity of 46%.

What part of the year is the coldest?

December tends to be the coldest month, with temperatures averaging a daily high of 27°F (-2.8°C) and a low of 12.6°F (-10.8°C).

What is the driest month?

December is the month with the least rainfall. Rain falls for 8.2 days and accumulates 0.79" (20mm) of precipitation.

What is the month with the shortest days in Basin?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

Average temperature
Basin, MT

Average temperature - Basin, MT

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (27°F).

The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).

Average pressure
Basin, MT

Average pressure - Basin, MT

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Basin, MT

Average wind speed - Basin, MT

The windiest months (with the highest average wind speed) are January and November (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity
Basin, MT

Average humidity - Basin, MT

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).

Average rainfall
Basin, MT

Average rainfall - Basin, MT

The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is December (0.79").

Average rainfall days
Basin, MT

Average rainfall days - Basin, MT

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (7.5 days).

Average snowfall
Basin, MT

Average snowfall - Basin, MT

The month with the highest snowfall is February (9.72").
The months with the least snowfall are July and August (0").

Average snowfall days
Basin, MT

Average snowfall days - Basin, MT

The month with the highest number of snowfall days is February (18 days).
The months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine
Basin, MT

Average daylight / Average sunshine - Basin, MT

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days
Basin, MT

Average sunshine days - Basin, MT

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is February (8.5 days).

Average visibility
Basin, MT

Average visibility - Basin, MT

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

Basin, Montana, USA

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