Monthly weather forecast and climate
Joliet, MT

January in Joliet, Montana, is a wintry winter month, with temperature in the range of an average high of 32°F (0°C) and an average low of 18.7°F (-7.4°C). In Joliet, the average high-temperature is almost the same as in December - a cold 32°F (0°C). Weather in January »

February, the last month of the winter, in Joliet, is also a wintry month, with average temperature ranging between min 16.7°F (-8.5°C) and max 32.4°F (0.2°C). In Joliet, the average high-temperature is almost the same as in January - a still cold 32.4°F (0.2°C). Weather in February »

March, the first month of the spring, in Joliet, is a chilly month, with average temperature varying between 27.5°F (-2.5°C) and 43.5°F (6.4°C). In March, the average high-temperature rises, from a cold 32.4°F (0.2°C) in February, to a chilly 43.5°F (6.4°C). Weather in March »

April is a cool spring month in Joliet, Montana, with temperature in the range of an average high of 51.3°F (10.7°C) and an average low of 33.3°F (0.7°C). In April, the average high-temperature marginally rises, from a frosty 43.5°F (6.4°C) in March, to a fresh 51.3°F (10.7°C). Weather in April »

May, the last month of the spring, in Joliet, is an enjoyable month, with average temperature fluctuating between 41.4°F (5.2°C) and 61°F (16.1°C). In Joliet, the average high-temperature increases, from a cool 51.3°F (10.7°C) in April, to a comfortable 61°F (16.1°C). Weather in May »

June, the first month of the summer, in Joliet, is a pleasant month, with average temperature varying between 49.6°F (9.8°C) and 72.7°F (22.6°C). In Joliet, the average high-temperature in June increases, from an enjoyable 61°F (16.1°C) in May, to an agreeable 72.7°F (22.6°C). Weather in June »

July in Joliet, Montana, is a warm summer month, with average temperature fluctuating between 82.9°F (28.3°C) and 57.2°F (14°C). With an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 57.2°F (14°C), July is the warmest month. In July, the average heat index is evaluated at 82.8°F (28.2°C). Weather in July »

August, the last month of the summer, in Joliet, is also a moderately hot month, with average temperature ranging between min 57.2°F (14°C) and max 81.1°F (27.3°C). In Joliet, the average high-temperature in August is practically the same as in July - a still moderately hot 81.1°F (27.3°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Joliet, Montana, with average temperature varying between 50.2°F (10.1°C) and 72°F (22.2°C). In September, the average high-temperature drops, from a moderately hot 81.1°F (27.3°C) in August, to a pleasant 72°F (22.2°C). Weather in September »

October, the same as September, is a cool autumn month in Joliet, Montana, with average temperature ranging between max 55.2°F (12.9°C) and min 37.9°F (3.3°C). In Joliet, the average high-temperature in October significantly decreases, from a pleasant 72°F (22.2°C) in September, to a fresh 55.2°F (12.9°C). Weather in October »

November, the last month of the autumn, in Joliet, is another cold month, with average temperature fluctuating between 26.8°F (-2.9°C) and 41.9°F (5.5°C). In November, the average high-temperature drops, from a fresh 55.2°F (12.9°C) in October, to a cold 41.9°F (5.5°C). Weather in November »

December, the first month of the winter, in Joliet, is still a freezing cold month, with average temperature varying between 30.7°F (-0.7°C) and 17.4°F (-8.1°C). The coldest month is December, with an average high-temperature of 30.7°F (-0.7°C) and an average low-temperature of 17.4°F (-8.1°C). Weather in December »

What is the most humid month in Joliet?

The most humid month in Joliet, Montana, is January, with an average relative humidity of 76%.

How many days does it rain in Joliet?

Throughout the year, in Joliet, there are 108.1 rainfall days, and 12.83" (326mm) of precipitation is accumulated.

What is the driest month in Joliet?

The month with the least rainfall in Joliet is January when the rain falls for 6 days and typically collects 0.51" (13mm) of precipitation.

When does it snow in Joliet?

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

How much does it snow in Joliet?

In Joliet, Montana, during the entire year, snow falls for 61.5 days, and aggregates up to 41.77" (1061mm) of snow.

What are the months with the lowest UV index in Joliet?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the snowiest month in Joliet?

The month with the most snowfall in Joliet is February when snow falls for 10.8 days and typically aggregates up to 6.81" (173mm) of snow.

What is the month with the least sunshine in Joliet?

With an average of 6.2h of sunshine, February has the least sunshine of the year in Joliet, Montana.

What is the wettest month in Joliet?

The month with the most rainfall in Joliet, Montana, is May when the rain falls for 16.3 days and typically aggregates up to 2.09" (53mm) of precipitation.

When are the longest days in Joliet?

With an average of 15.6h of daylight, June has the longest days of the year in Joliet, Montana.

What is the warmest month in Joliet?

The warmest month in Joliet, Montana, is July, with an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 57.2°F (14°C).

When it does not snow in Joliet?

In Joliet snow does not fall in July and August.

What month has the most sunshine in Joliet?

With an average of 11.9h of sunshine, July has the most sunshine of the year.

When is the highest UV index in Joliet?

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

What is the least humid month in Joliet?

With an average relative humidity of 41%, August is the least humid month.

What is the coldest month in Joliet?

December is the coldest month, with an average high-temperature of 30.7°F (-0.7°C) and an average low-temperature of 17.4°F (-8.1°C).

What is the month with the shortest days in Joliet?

December has the shortest days of the year in Joliet, with an average of 8.8h of daylight.
Average temperature - Joliet, MT
Average pressure - Joliet, MT

Months with the highest atmospheric pressure are January and December (30.15").
The month with the lowest atmospheric pressure is June (29.88").

Average wind speed - Joliet, MT

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average rainfall - Joliet, MT
Average rainfall days - Joliet, MT
Average snowfall - Joliet, MT
Average snowfall days - Joliet, MT

The month with the highest number of snowfall days is February (10.8 days).
Months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine - Joliet, MT

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.2h).

Average sunshine days - Joliet, MT

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).

Average UV index - Joliet, MT
Average visibility - Joliet, 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).