West Yellowstone
Montana, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
West Yellowstone, MT

January, the same as December, in West Yellowstone, Montana, is another subzero cold winter month, with average temperature varying between 6.1°F (-14.4°C) and 21.9°F (-5.6°C). In January, the average high-temperature is almost the same as in December - a still freezing cold 21.9°F (-5.6°C). Weather in January »

February, the last month of the winter, in West Yellowstone, is also a subzero cold month, with temperature in the range of an average low of 7.2°F (-13.8°C) and an average high of 23°F (-5°C). In February, the average high-temperature is practically the same as in January - a still subzero cold 23°F (-5°C). Weather in February »

The first month of the spring, March, is also a subzero cold month in West Yellowstone, Montana, with average temperature fluctuating between 30°F (-1.1°C) and 14.4°F (-9.8°C). In March, the average high-temperature marginally rises, from a subzero cold 23°F (-5°C) in February, to a still freezing cold 30°F (-1.1°C). Weather in March »

April in West Yellowstone, Montana, is a wintry spring month, with average temperature varying between 37.2°F (2.9°C) and 19.6°F (-6.9°C). In April, the average high-temperature marginally rises, from a freezing cold 30°F (-1.1°C) in March, to a wintry 37.2°F (2.9°C). Weather in April »

May, the last month of the spring, in West Yellowstone, is a frosty month, with average temperature varying between 28.9°F (-1.7°C) and 49.8°F (9.9°C). In West Yellowstone, the average high-temperature increases, from a cold 37.2°F (2.9°C) in April, to a frosty 49.8°F (9.9°C). Weather in May »

June, the first month of the summer, in West Yellowstone, is a comfortable month, with average temperature fluctuating between 61.9°F (16.6°C) and 37°F (2.8°C). In West Yellowstone, the average high-temperature rises, from a chilly 49.8°F (9.9°C) in May, to an enjoyable 61.9°F (16.6°C). Weather in June »

July in West Yellowstone, Montana, is a pleasant summer month, with average temperature ranging between max 72.9°F (22.7°C) and min 43.5°F (6.4°C). The warmest month is July, with an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 43.5°F (6.4°C). Weather in July »

The last month of the summer, August, is another pleasant month in West Yellowstone, Montana, with average temperature fluctuating between 43.7°F (6.5°C) and 71.4°F (21.9°C). In West Yellowstone, the average high-temperature in August is almost the same as in July - a still pleasant 71.4°F (21.9°C). Weather in August »

The first month of the autumn, September, is also an enjoyable month in West Yellowstone, Montana, with average temperature fluctuating between 37.6°F (3.1°C) and 61.9°F (16.6°C). In September, the average high-temperature drops, from a pleasant 71.4°F (21.9°C) in August, to a comfortable 61.9°F (16.6°C). Weather in September »

October, the same as September, in West Yellowstone, Montana, is another chilly autumn month, with average temperature varying between 26.1°F (-3.3°C) and 44.2°F (6.8°C). In October, the average high-temperature plummets, from a comfortable 61.9°F (16.6°C) in September, to a frosty 44.2°F (6.8°C). Weather in October »

November, the last month of the autumn, in West Yellowstone, is another freezing cold month, with average temperature varying between 14.2°F (-9.9°C) and 29.7°F (-1.3°C). In West Yellowstone, the average high-temperature significantly decreases, from a chilly 44.2°F (6.8°C) in October, to a subzero cold 29.7°F (-1.3°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in West Yellowstone, Montana, with average temperature varying between 20.1°F (-6.6°C) and 4.8°F (-15.1°C). With an average high-temperature of 20.1°F (-6.6°C) and an average low-temperature of 4.8°F (-15.1°C), December is the coldest month. Weather in December »

How many days does it rain in West Yellowstone?

In West Yellowstone, during the entire year, the rain falls for 109.2 days and collects up to 23.15" (588mm) of precipitation.

When does it snow in West Yellowstone?

Months with snowfall in West Yellowstone, Montana, are January through July, September through December.

How much does it snow in West Yellowstone?

In West Yellowstone, Montana, during the entire year, snow falls for 159.3 days, and aggregates up to 120.47" (3060mm) of snow.

What is the month with the least sunshine in West Yellowstone?

Months with the least sunshine in West Yellowstone are January, February and December, with an average of 3.3h of sunshine.

What are the months with the lowest UV index in West Yellowstone?

Months with the lowest UV index in West Yellowstone are January through April, October through December, with an average maximum UV index of 1.

What is the most humid month in West Yellowstone?

With an average relative humidity of 95%, February is the most humid month in West Yellowstone.

What is the snowiest month in West Yellowstone?

The month with the most snowfall in West Yellowstone is February when snow falls for 23.2 days and typically aggregates up to 17.83" (453mm) of snow.

What is the rainiest month in West Yellowstone?

The month with the most rainfall in West Yellowstone is May when the rain falls for 17.4 days and typically aggregates up to 2.8" (71mm) of precipitation.

When are the longest days in West Yellowstone?

With an average of 15.5h of daylight, June has the longest days of the year in West Yellowstone, Montana.

What is the warmest month in West Yellowstone?

The warmest month in West Yellowstone is July, with an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 43.5°F (6.4°C).

What is the driest month in West Yellowstone?

The month with the least rainfall is July when the rain falls for 11.9 days and typically collects 0.91" (23mm) of precipitation.

What month has the most sunshine in West Yellowstone?

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

When is the highest UV index in West Yellowstone?

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

What is the least humid month in West Yellowstone?

August is the least humid month in West Yellowstone, Montana, with an average relative humidity of 50%.

When it does not snow in West Yellowstone?

The only month without snowfall in West Yellowstone is August.

What is the coldest month in West Yellowstone?

December is the coldest month, with an average high-temperature of 20.1°F (-6.6°C) and an average low-temperature of 4.8°F (-15.1°C).

What is the month with the shortest days in West Yellowstone?

With an average of 8.9h of daylight, December has the shortest days of the year in West Yellowstone, Montana.
Average temperature - West Yellowstone, MT
Average humidity - West Yellowstone, MT
Average rainfall - West Yellowstone, MT
Average rainfall days - West Yellowstone, MT
Average snowfall - West Yellowstone, MT
Average snowfall days - West Yellowstone, MT

The month with the highest number of snowfall days is March (24.4 days).
Months with the least snowfall days are July and August (0.2 days).

Average daylight / Average sunshine - West Yellowstone, MT

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

The month with the most sunshine is July (Average sunshine: 11.8h).
Months with the least sunshine are January, February and December (Average sunshine: 3.3).

Average UV index - West Yellowstone, MT