Monthly weather forecast and climate
West Yellowstone, MT

The coldest months in West Yellowstone, Montana, are January and December, with an average high-temperature of 24.1°F (-4.4°C). In West Yellowstone, in January, during 10 rainfall days, 2" (49.8mm) of precipitation is typically accumulated.
Weather in January »
In February, the average high-temperature is 30.6°F (-0.8°C), and the average low-temperature is 3.9°F (-15.6°C). In West Yellowstone, during February, the rain falls for 9 days and regularly aggregates up to 1.8" (45mm) of precipitation.
Weather in February »
In March, the average high-temperature is 38.3°F (3.5°C), and the average low-temperature is 12.9°F (-10.6°C). In March, the rain falls for 11 days.
Weather in March »
In West Yellowstone, in April, the average high-temperature is 47.8°F (8.8°C), and the average low-temperature is 21.6°F (-5.8°C). In West Yellowstone, it is raining for 10 days, with typically 1.5" (38.4mm) of accumulated precipitation.
Weather in April »
The average high-temperature, in May, is 58.6°F (14.8°C), while the average low-temperature is 29.7°F (-1.3°C). In West Yellowstone, in May, during 11 rainfall days, 2.2" (55.6mm) of precipitation is typically accumulated.
Weather in May »
The average high-temperature, in June, is 69.4°F (20.8°C), while the average low-temperature is 36.9°F (2.7°C). In June, the rain falls for 10 days.
Weather in June »
July is the warmest month, with an average high-temperature of 78.8°F (26°C) and an average low-temperature of 41.5°F (5.3°C). In West Yellowstone, during 8 rainfall days, 1.8" (46.7mm) of precipitation is typically accumulated.
Weather in July »
The average high-temperature, is 77.9°F (25.5°C), while the average low-temperature is 38.5°F (3.6°C). In August, the rain falls for 8 days.
Weather in August »
The average high-temperature, in September, is 66.9°F (19.4°C), while the average low-temperature is 30°F (-1.1°C). In September, the rain falls for 8 days.
Weather in September »
In West Yellowstone, the average high-temperature is 52.3°F (11.3°C), and the average low-temperature is 22.8°F (-5.1°C). The month with the least rainfall is October when the rain falls for 7 days and typically collects 1.3" (33mm) of precipitation.
Weather in October »
The average high-temperature, is 33.8°F (1°C), while the average low-temperature is 11.8°F (-11.2°C). In West Yellowstone, it is raining for 9 days, with typically 2" (51.1mm) of accumulated precipitation.
Weather in November »
The coldest months are January and December, with an average high-temperature of 24.1°F (-4.4°C). December is the month with the most rainfall.
Weather in December »

What are the coldest months in West Yellowstone?

The coldest months are January and December, with an average high-temperature of 24.1°F (-4.4°C).

How many days does it rain in West Yellowstone?

In West Yellowstone, Montana, during the entire year, the rain falls for 111 days and collects up to 21.8" (553.4mm) of precipitation.

When does it snow in West Yellowstone?

Months with snowfall in West Yellowstone, Montana, are January through June, August through December.

How much does it snow in West Yellowstone?

Throughout the year, in West Yellowstone, 160.2" (4069mm) of snow is accumulated.

What is the snowiest month in West Yellowstone?

January is the month with the most snowfall in West Yellowstone, with 32.9" (835.7mm) of accumulated snow.

What is the month with the lowest UV index in West Yellowstone?

January and December, with an average UV index of 1, are months with the lowest UV index in West Yellowstone, Montana.

When are the longest days in West Yellowstone?

The month with the longest days is June, with an average of 15.5h of daylight.

What is the warmest month in West Yellowstone?

With an average high-temperature of 78.8°F (26°C) and an average low-temperature of 41.5°F (5.3°C), July is the warmest month.

What month has the most sunshine in West Yellowstone?

July has the most sunshine of the year, with an average of 11h of sunshine.

When is the highest UV index in West Yellowstone?

With an average UV index of 10, July is the month with the highest UV index in West Yellowstone.

What is the driest month in West Yellowstone?

October is the month with the least rainfall in West Yellowstone, Montana. Rain falls for 7 days and accumulates 1.3" (33mm) of precipitation.

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

Months with the least sunshine in West Yellowstone, Montana, are November and December, with an average of 4h of sunshine.

What is the rainiest month in West Yellowstone?

The month with the most rainfall is December when the rain falls for 10 days and typically aggregates up to 2.3" (58.4mm) of precipitation.

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

The month with the shortest days in West Yellowstone is December, with an average of 8.9h of daylight.
Average temperature - West Yellowstone, MT
Average rainfall - West Yellowstone, MT
Average rainfall days - West Yellowstone, MT
Average snowfall - West Yellowstone, MT
Average daylight / Average sunshine - West Yellowstone, MT
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