Monthly weather forecast and climate
Chester, MT

Weather in January

January, the same as December, in Chester, Montana, is a freezing cold winter month, with temperature in the range of an average high of 28.8°F (-1.8°C) and an average low of 16.7°F (-8.5°C). In January, the average high-temperature is practically the same as in December - a still freezing cold 28.8°F (-1.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Chester, Montana, with average temperature ranging between min 16.3°F (-8.7°C) and max 29.3°F (-1.5°C). In February, 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

The first month of the spring, March, is a wintry month in Chester, Montana, with temperature in the range of an average low of 26.6°F (-3°C) and an average high of 41.7°F (5.4°C). In March, the average high-temperature increases, from a freezing cold 29.3°F (-1.5°C) in February, to a wintry 41.7°F (5.4°C). Weather in March »

Weather in April

April in Chester, Montana, is a cool spring month, with average temperature varying between 36.5°F (2.5°C) and 53.1°F (11.7°C). In April, the average high-temperature increases, from a cold 41.7°F (5.4°C) in March, to a cool 53.1°F (11.7°C). Weather in April »

Weather in May

May, the last month of the spring, in Chester, is a comfortable month, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 45.1°F (7.3°C). In May, the average high-temperature increases, from a fresh 53.1°F (11.7°C) in April, to an enjoyable 63.1°F (17.3°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Chester, Montana, with average temperature ranging between max 72°F (22.2°C) and min 52.2°F (11.2°C). In Chester, Montana, the average high-temperature in June slightly increases, from a comfortable 63.1°F (17.3°C) in May, to a pleasant 72°F (22.2°C). Weather in June »

Weather in July

July is a moderately hot summer month in Chester, Montana, with average temperature varying between 82°F (27.8°C) and 59.5°F (15.3°C). The warmest month is July, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 59.5°F (15.3°C). The average heat index in July is appraised at 81.7°F (27.6°C). Weather in July »

Weather in August

August, the last month of the summer, in Chester, is another warm month, with average temperature varying between 81.1°F (27.3°C) and 60.4°F (15.8°C). In Chester, the average high-temperature is practically the same as in July - a still moderately hot 81.1°F (27.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Chester, Montana, with temperature in the range of an average low of 52°F (11.1°C) and an average high of 70.2°F (21.2°C). In Chester, the average high-temperature decreases, from a warm 81.1°F (27.3°C) in August, to an agreeable 70.2°F (21.2°C). Weather in September »

Weather in October

October, like September, in Chester, Montana, is another fresh autumn month, with average temperature varying between 38.3°F (3.5°C) and 54°F (12.2°C). In Chester, the average high-temperature plummets, from an agreeable 70.2°F (21.2°C) in September, to a fresh 54°F (12.2°C). Weather in October »

Weather in November

November, the last month of the autumn, in Chester, is another cold month, with average temperature varying between 26.6°F (-3°C) and 39.9°F (4.4°C). In November, the average high-temperature drops, from a fresh 54°F (12.2°C) in October, to a wintry 39.9°F (4.4°C). Weather in November »

Weather in December

December, the first month of the winter, in Chester, is also a subzero cold month, with average temperature varying between 28.2°F (-2.1°C) and 16.7°F (-8.5°C). With an average high-temperature of 28.2°F (-2.1°C) and an average low-temperature of 16.7°F (-8.5°C), December is the coldest month. Weather in December »
[Resources]

FAQ

What is the most humid month in Chester?

With an average relative humidity of 81%, January is the most humid month in Chester, Montana.

How much does it rain in Chester?

In Chester, Montana, during the entire year, the rain falls for 113.8 days and collects up to 11.89" (302mm) of precipitation.

When does it snow in Chester?

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

How many days does it snow in Chester?

Throughout the year, in Chester, Montana, there are 65.1 snowfall days, and 24.69" (627mm) of snow is accumulated.

What is the month with the least sunshine in Chester?

Months with the least sunshine are January and December, with an average of 5.3h of sunshine.

When is the lowest UV index in Chester?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Chester.

What is the snowiest month in Chester?

The month with the most snowfall is February when snow falls for 12.1 days and typically aggregates up to 5" (127mm) of snow.

What is the rainiest month in Chester?

June is the month with the most rainfall in Chester, Montana. Rain falls for 13.8 days and accumulates 2.32" (59mm) of precipitation.

When it does not snow in Chester?

June through August are months without snowfall in Chester, Montana.

When are the longest days in Chester?

June has the longest days of the year, with an average of 16.1h of daylight.

What is the warmest month in Chester?

July is the warmest month in Chester, Montana, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 59.5°F (15.3°C).

What month has the most sunshine in Chester?

With an average of 12h of sunshine, July has the most sunshine of the year in Chester.

When is the highest UV index in Chester?

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

What is the least humid month in Chester?

With an average relative humidity of 39%, August is the least humid month.

What is the coldest month in Chester?

With an average high-temperature of 28.2°F (-2.1°C) and an average low-temperature of 16.7°F (-8.5°C), December is the coldest month.

What is the driest month in Chester?

December is the month with the least rainfall. Rain falls for 6.9 days and accumulates 0.59" (15mm) of precipitation.

What is the month with the shortest days in Chester?

December has the shortest days of the year in Chester, with an average of 8.4h of daylight.

Average temperature
Chester, MT

Average temperature - Chester, MT

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (28.2°F).

The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is February (16.3°F).

[Resources]

Average pressure
Chester, MT

Average pressure - Chester, MT

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is June (29.85").

[Resources]

Average wind speed
Chester, MT

Average wind speed - Chester, MT

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

[Resources]

Average rainfall
Chester, MT

Average rainfall - Chester, MT

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is December (0.59").

[Resources]

Average rainfall days
Chester, MT

Average rainfall days - Chester, MT

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (5 days).

[Resources]

Average snowfall days
Chester, MT

Average snowfall days - Chester, MT

The month with the highest number of snowfall days is January (12.5 days).
Months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight / Average sunshine
Chester, MT

Average daylight / Average sunshine - Chester, MT

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

The month with the most sunshine is July (Average sunshine: 12h).
Months with the least sunshine are January and December (Average sunshine: 5.3).

[Resources]

Average sunshine days
Chester, MT

Average sunshine days - Chester, MT

The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (11.7 days).

[Resources]

Average UV index
Chester, MT

Average UV index - Chester, MT

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

[Resources]

Average visibility
Chester, MT

Average visibility - Chester, MT

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

[Resources]