Monthly weather forecast and climate
Rollins, MT

January, like December, is another subzero cold winter month in Rollins, Montana, with average temperature ranging between max 28.9°F (-1.7°C) and min 17.6°F (-8°C). In January, the average high-temperature is relatively the same as in December - a still subzero cold 28.9°F (-1.7°C). Weather in January »

The last month of the winter, February, is also a subzero cold month in Rollins, Montana, with average temperature fluctuating between 29.1°F (-1.6°C) and 16.9°F (-8.4°C). In February, the average high-temperature is essentially the same as in January - a still subzero cold 29.1°F (-1.6°C). Weather in February »

March, the first month of the spring, in Rollins, is a cold month, with average temperature varying between 37.8°F (3.2°C) and 24.3°F (-4.3°C). In Rollins, the average high-temperature in March marginally rises, from a subzero cold 29.1°F (-1.6°C) in February, to a cold 37.8°F (3.2°C). Weather in March »

April in Rollins, Montana, is a chilly spring month, with average temperature fluctuating between 30.2°F (-1°C) and 47.3°F (8.5°C). In Rollins, the average high-temperature increases, from a wintry 37.8°F (3.2°C) in March, to a chilly 47.3°F (8.5°C). Weather in April »

May, the last month of the spring, in Rollins, is a mild month, with average temperature varying between 58.8°F (14.9°C) and 37°F (2.8°C). In May, the average high-temperature increases, from a chilly 47.3°F (8.5°C) in April, to a mild 58.8°F (14.9°C). Weather in May »

The first month of the summer, June, is a comfortable month in Rollins, Montana, with average temperature varying between 65.8°F (18.8°C) and 43°F (6.1°C). In June, the average high-temperature slightly increases, from a moderate 58.8°F (14.9°C) in May, to an enjoyable 65.8°F (18.8°C). Weather in June »

July in Rollins, Montana, is a moderately hot summer month, with average temperature varying between 48.7°F (9.3°C) and 76.6°F (24.8°C). July is the warmest month, with an average high-temperature of 76.6°F (24.8°C) and an average low-temperature of 48.7°F (9.3°C). Weather in July »

August, the last month of the summer, in Rollins, is also a moderately hot month, with average temperature varying between 76.5°F (24.7°C) and 48.2°F (9°C). In August, the average high-temperature is practically the same as in July - a still warm 76.5°F (24.7°C). Weather in August »

September, the first month of the autumn, in Rollins, is also an enjoyable month, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 66.2°F (19°C). In Rollins, the average high-temperature in September drops, from a moderately hot 76.5°F (24.7°C) in August, to a comfortable 66.2°F (19°C). Weather in September »

October, like September, is a frosty autumn month in Rollins, Montana, with average temperature fluctuating between 32.9°F (0.5°C) and 49.6°F (9.8°C). In October, the average high-temperature declines considerably, from a comfortable 66.2°F (19°C) in September, to a frosty 49.6°F (9.8°C). Weather in October »

November, the last month of the autumn, in Rollins, is also a wintry month, with average temperature ranging between max 36.1°F (2.3°C) and min 25°F (-3.9°C). In November, the average high-temperature drops, from a frosty 49.6°F (9.8°C) in October, to a cold 36.1°F (2.3°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in Rollins, Montana, with average temperature fluctuating between 16.7°F (-8.5°C) and 27.5°F (-2.5°C). With an average high-temperature of 27.5°F (-2.5°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 Rollins?

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

How many days does it rain in Rollins?

In Rollins, during the entire year, the rain falls for 153.5 days and collects up to 19.76" (502mm) of precipitation.

When does it snow in Rollins?

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

How many days does it snow in Rollins?

Throughout the year, there are 94.5 snowfall days, and 52.6" (1336mm) of snow is accumulated.

What is the month with the least sunshine in Rollins?

The month with the least sunshine in Rollins is January, with an average of 4.1h of sunshine.

What is the month with the lowest UV index in Rollins?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the wettest month in Rollins?

June is the month with the most rainfall. Rain falls for 16 days and accumulates 2.36" (60mm) of precipitation.

When it does not snow in Rollins?

In Rollins snow does not fall in June through August.

When are the longest days in Rollins?

The month with the longest days is June, with an average of 16h of daylight.

What is the warmest month in Rollins?

With an average high-temperature of 76.6°F (24.8°C) and an average low-temperature of 48.7°F (9.3°C), July is the warmest month.

What is the driest month in Rollins?

July and August are months with the least rain when the rain falls for 8.6 days and typically aggregates up to 0.63" (16mm) of rain.

What month has the most sunshine in Rollins?

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

When is the highest UV index in Rollins?

July is the month with the highest UV index in Rollins, Montana, with an average maximum UV index of 5.

What is the least humid month in Rollins?

August is the least humid month in Rollins, with an average relative humidity of 53%.

What is the coldest month in Rollins?

The coldest month is December, with an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 16.7°F (-8.5°C).

When does it snow the most in Rollins?

The month with the most snowfall in Rollins is December when snow falls for 20.1 days and typically aggregates up to 12.32" (313mm) of snow.

What is the month with the shortest days in Rollins?

The month with the shortest days is December, with an average of 8.5h of daylight.
Average temperature - Rollins, MT
Average pressure - Rollins, MT

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed - Rollins, MT

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average rainfall - Rollins, MT

The wettest month (with the highest rainfall) is June (2.36").
The driest months (with the least rainfall) are July and August (0.63").

Average rainfall days - Rollins, MT

The month with the highest number of rainy days is April (18.8 days).
The month with the least rainy days is August (7.2 days).

Average snowfall - Rollins, MT
Average snowfall days - Rollins, MT

The month with the highest number of snowfall days is December (20.1 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine - Rollins, MT

The month with the longest days is June (Average daylight: 16h).
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: 4.1h).

Average sunshine days - Rollins, MT

The month with the most sunshine days is July (20.2 days).
Months with the least sunshine days are February and March (7.8 days).

Average visibility - Rollins, MT

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