Monthly weather forecast and climate
Charlo, MT

January, like December, is a freezing cold winter month in Charlo, Montana, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 18°F (-7.8°C). In January, the average high-temperature is almost the same as in December - a still freezing cold 29.8°F (-1.2°C). Weather in January »

February, the last month of the winter, in Charlo, is also a subzero cold month, with average temperature varying between 17.6°F (-8°C) and 30.4°F (-0.9°C). In February, the average high-temperature is almost the same as in January - a still freezing cold 30.4°F (-0.9°C). Weather in February »

The first month of the spring, March, is a cold month in Charlo, Montana, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 24.8°F (-4°C). In Charlo, the average high-temperature marginally rises, from a freezing cold 30.4°F (-0.9°C) in February, to a cold 39.2°F (4°C). Weather in March »

April is a chilly spring month in Charlo, Montana, with average temperature ranging between max 48.7°F (9.3°C) and min 29.8°F (-1.2°C). In April, the average high-temperature rises, from a cold 39.2°F (4°C) in March, to a chilly 48.7°F (9.3°C). Weather in April »

May, the last month of the spring, in Charlo, is a comfortable month, with average temperature varying between 61°F (16.1°C) and 36.7°F (2.6°C). In Charlo, the average high-temperature rises, from a frosty 48.7°F (9.3°C) in April, to an enjoyable 61°F (16.1°C). Weather in May »

June, the first month of the summer, in Charlo, is a pleasant month, with average temperature varying between 68.5°F (20.3°C) and 43.3°F (6.3°C). In Charlo, the average high-temperature slightly increases, from a comfortable 61°F (16.1°C) in May, to an agreeable 68.5°F (20.3°C). Weather in June »

July is a moderately hot summer month in Charlo, Montana, with average temperature ranging between min 49.3°F (9.6°C) and max 79.7°F (26.5°C). With an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 49.3°F (9.6°C), July is the warmest month. Weather in July »

August, the last month of the summer, in Charlo, is also a moderately hot month, with average temperature ranging between max 79.3°F (26.3°C) and min 49.5°F (9.7°C). In Charlo, the average high-temperature in August is essentially the same as in July - a still warm 79.3°F (26.3°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Charlo, Montana, with average temperature ranging between min 42.3°F (5.7°C) and max 68.5°F (20.3°C). In September, the average high-temperature decreases, from a warm 79.3°F (26.3°C) in August, to a pleasant 68.5°F (20.3°C). Weather in September »

October, like September, in Charlo, Montana, is a cool autumn month, with average temperature fluctuating between 32.7°F (0.4°C) and 51.8°F (11°C). In October, the average high-temperature declines considerably, from an agreeable 68.5°F (20.3°C) in September, to a fresh 51.8°F (11°C). Weather in October »

November, the last month of the autumn, in Charlo, is another cold month, with average temperature ranging between min 24.4°F (-4.2°C) and max 37.2°F (2.9°C). In November, the average high-temperature plummets, from a fresh 51.8°F (11°C) in October, to a cold 37.2°F (2.9°C). Weather in November »

December, the first month of the winter, in Charlo, is still a freezing cold month, with average temperature ranging between max 28.4°F (-2°C) and min 16.7°F (-8.5°C). With an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 16.7°F (-8.5°C), December is the coldest month. Weather in December »

What is the most humid month in Charlo?

The most humid month in Charlo, Montana, is January, with an average relative humidity of 91%.

How much does it rain in Charlo?

Throughout the year, there are 129.9 rainfall days, and 13.5" (343mm) of precipitation is accumulated.

When does it snow in Charlo?

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

How many days does it snow in Charlo?

In Charlo, during the entire year, snow falls for 67.1 days, and aggregates up to 28.27" (718mm) of snow.

What is the month with the least sunshine in Charlo?

The month with the least sunshine is January, with an average of 4.7h of sunshine.

When does it snow the most in Charlo?

February is the month with the most snowfall. Snow falls for 14.1 days and accumulates 6.5" (165mm) of snow.

When is the lowest UV index in Charlo?

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

What is the wettest month in Charlo?

June is the month with the most rainfall in Charlo. Rain falls for 15.7 days and accumulates 2.2" (56mm) of precipitation.

When it does not snow in Charlo?

June through August are months without snowfall in Charlo.

When are the longest days in Charlo?

June has the longest days of the year in Charlo, with an average of 15.9h of daylight.

What is the warmest month in Charlo?

July is the warmest month in Charlo, Montana, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 49.3°F (9.6°C).

What is the driest month in Charlo?

Months with the least rainfall are July and August Rain falls for 8 days and accumulates 0.63" (16mm) of rain.

What month has the most sunshine in Charlo?

With an average of 11.8h of sunshine, July has the most sunshine of the year.

When is the highest UV index in Charlo?

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

What is the least humid month in Charlo?

August is the least humid month in Charlo, Montana, with an average relative humidity of 49%.

What is the coldest month in Charlo?

With an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 16.7°F (-8.5°C), December is the coldest month in Charlo, Montana.

What is the month with the shortest days in Charlo?

With an average of 8.5h of daylight, December has the shortest days of the year in Charlo, Montana.
Average temperature - Charlo, MT
Average pressure - Charlo, MT

The month with the highest atmospheric pressure is January (30.18").
The month with the lowest atmospheric pressure is June (29.92").

Average wind speed - Charlo, MT

The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are January, August and December (3.9mph).

Average rainfall - Charlo, MT

The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.63").

Average rainfall days - Charlo, MT

The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is August (7.4 days).

Average snowfall - Charlo, MT
Average snowfall days - Charlo, MT

The month with the highest number of snowfall days is December (14.5 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine - Charlo, MT

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 4.7h).

Average sunshine days - Charlo, MT
Average visibility - Charlo, MT

Months with the highest visibility are April, May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February and December (4mi).