Monthly weather forecast and climate
Winston, MT

Weather in January

January, like December, is another subzero cold winter month in Winston, Montana, with average temperature ranging between max 28.9°F (-1.7°C) and min 14.5°F (-9.7°C). In January, the average high-temperature is almost the same as in December - a still freezing cold 28.9°F (-1.7°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Winston, Montana, with average temperature fluctuating between 14.4°F (-9.8°C) and 29.3°F (-1.5°C). In Winston, the average high-temperature is almost the same as in January - a still freezing cold 29.3°F (-1.5°C). Weather in February »

Weather in March

March, the first month of the spring, in Winston, is a wintry month, with average temperature varying between 39.7°F (4.3°C) and 22.6°F (-5.2°C). In Winston, the average high-temperature rises, from a subzero cold 29.3°F (-1.5°C) in February, to a cold 39.7°F (4.3°C). Weather in March »

Weather in April

April in Winston, Montana, is a chilly spring month, with average temperature fluctuating between 48.7°F (9.3°C) and 28.8°F (-1.8°C). In Winston, the average high-temperature in April increases, from a wintry 39.7°F (4.3°C) in March, to a chilly 48.7°F (9.3°C). Weather in April »

Weather in May

May, the last month of the spring, in Winston, is a mild month, with average temperature varying between 60.4°F (15.8°C) and 36.9°F (2.7°C). In May, the average high-temperature increases, from a frosty 48.7°F (9.3°C) in April, to a mild 60.4°F (15.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Winston, Montana, with temperature in the range of an average low of 43.3°F (6.3°C) and an average high of 70.7°F (21.5°C). In June, the average high-temperature increases, from a mild 60.4°F (15.8°C) in May, to a pleasant 70.7°F (21.5°C). Weather in June »

Weather in July

July is a warm summer month in Winston, Montana, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 49.3°F (9.6°C). The warmest month is July, with an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 49.3°F (9.6°C). In July, the average heat index is estimated at 81.9°F (27.7°C). Weather in July »

Weather in August

August, the last month of the summer, in Winston, is another warm month, with average temperature varying between 79°F (26.1°C) and 49.3°F (9.6°C). In Winston, the average high-temperature is almost the same as in July - a still warm 79°F (26.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Winston, Montana, with average temperature ranging between min 43.3°F (6.3°C) and max 68.5°F (20.3°C). In September, the average high-temperature drops, from a moderately hot 79°F (26.1°C) in August, to an agreeable 68.5°F (20.3°C). Weather in September »

Weather in October

October, like September, in Winston, Montana, is a cool autumn month, with average temperature fluctuating between 51.6°F (10.9°C) and 32.4°F (0.2°C). In October, the average high-temperature declines considerably, from a pleasant 68.5°F (20.3°C) in September, to a cool 51.6°F (10.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Winston, Montana, with average temperature varying between 37.6°F (3.1°C) and 21.7°F (-5.7°C). In Winston, the average high-temperature drops, from a cool 51.6°F (10.9°C) in October, to a cold 37.6°F (3.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Winston, Montana, with average temperature fluctuating between 27.1°F (-2.7°C) and 13.1°F (-10.5°C). December is the coldest month, with an average high-temperature of 27.1°F (-2.7°C) and an average low-temperature of 13.1°F (-10.5°C). Weather in December »
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FAQ

What is the most humid month in Winston?

January is the most humid month in Winston, Montana, with an average relative humidity of 86%.

How many days does it rain in Winston?

In Winston, during the entire year, the rain falls for 117.5 days and collects up to 10.24" (260mm) of precipitation.

When does it snow in Winston?

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

How much does it snow in Winston?

In Winston, Montana, during the entire year, snow falls for 72.8 days, and aggregates up to 26.22" (666mm) of snow.

What is the month with the least sunshine in Winston?

The month with the least sunshine in Winston, Montana, is January, with an average of 5.5h of sunshine.

When does it snow the most in Winston?

February is the month with the most snowfall. Snow falls for 15.4 days and accumulates 5.71" (145mm) of snow.

What is the month with the lowest UV index in Winston?

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Winston, Montana.

What is the rainiest month in Winston?

June is the month with the most rainfall in Winston. Rain falls for 13.5 days and accumulates 1.65" (42mm) of precipitation.

When it does not snow in Winston?

In Winston snow does not fall in June through August.

When are the longest days in Winston?

With an average of 15.8h of daylight, June has the longest days of the year.

What is the warmest month in Winston?

With an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 49.3°F (9.6°C), July is the warmest month.

What month has the most sunshine in Winston?

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

When is the highest UV index in Winston?

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

What is the least humid month in Winston?

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

What is the coldest month in Winston?

December is the coldest month in Winston, with an average high-temperature of 27.1°F (-2.7°C) and an average low-temperature of 13.1°F (-10.5°C).

What is the driest month in Winston?

December is the month with the least rainfall in Winston, Montana. Rain falls for 6.3 days and accumulates 0.51" (13mm) of precipitation.

What is the month with the shortest days in Winston?

With an average of 8.7h of daylight, December has the shortest days of the year in Winston.

Average temperature
Winston, MT

Average temperature - Winston, MT

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is December (27.1°F).

Months with the highest average low temperature are July and August (49.3°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).

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Average pressure
Winston, MT

Average pressure - Winston, MT

Months with the highest atmospheric pressure are January and December (30.17").
The month with the lowest atmospheric pressure is June (29.89").

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Average wind speed
Winston, MT

Average wind speed - Winston, MT

The windiest month (with the highest average wind speed) is December (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average rainfall
Winston, MT

Average rainfall - Winston, MT

The wettest month (with the highest rainfall) is June (1.65").
The driest month (with the least rainfall) is December (0.51").

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Average rainfall days
Winston, MT

Average rainfall days - Winston, MT

The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is January (6.2 days).

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Average snowfall
Winston, MT

Average snowfall - Winston, MT

The month with the highest snowfall is February (5.71").
Months with the least snowfall are June, July and August (0").

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Average snowfall days
Winston, MT

Average snowfall days - Winston, MT

The month with the highest number of snowfall days is February (15.4 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Winston, MT

Average daylight / Average sunshine - Winston, MT

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.7h).

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is January (Average sunshine: 5.5h).

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Average sunshine days
Winston, MT

Average sunshine days - Winston, MT

The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is April (10.5 days).

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Average visibility
Winston, MT

Average visibility - Winston, MT

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

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