Monthly weather forecast and climate
Corvallis, MT

January, like December, is a freezing cold winter month in Corvallis, Montana, with average temperature fluctuating between 28.8°F (-1.8°C) and 16.2°F (-8.8°C). In Corvallis, the average high-temperature in January is essentially the same as in December - a still subzero cold 28.8°F (-1.8°C). Weather in January »

The last month of the winter, February, is another freezing cold month in Corvallis, Montana, with temperature in the range of an average high of 28.8°F (-1.8°C) and an average low of 15.1°F (-9.4°C). In Corvallis, the average high-temperature in February remains the same as in January - a still freezing cold 28.8°F (-1.8°C). Weather in February »

The first month of the spring, March, is a cold month in Corvallis, Montana, with average temperature varying between 36°F (2.2°C) and 21°F (-6.1°C). In March, the average high-temperature slightly increases, from a freezing cold 28.8°F (-1.8°C) in February, to a wintry 36°F (2.2°C). Weather in March »

April is a chilly spring month in Corvallis, Montana, with average temperature varying between 25.9°F (-3.4°C) and 43.5°F (6.4°C). In April, the average high-temperature marginally rises, from a wintry 36°F (2.2°C) in March, to a frosty 43.5°F (6.4°C). Weather in April »

May, the last month of the spring, in Corvallis, is a mild month, with average temperature ranging between max 56.7°F (13.7°C) and min 33.4°F (0.8°C). In May, the average high-temperature rises, from a frosty 43.5°F (6.4°C) in April, to a mild 56.7°F (13.7°C). Weather in May »

The first month of the summer, June, is an enjoyable month in Corvallis, Montana, with average temperature varying between 65.3°F (18.5°C) and 40.6°F (4.8°C). In Corvallis, the average high-temperature in June slightly increases, from a moderate 56.7°F (13.7°C) in May, to a comfortable 65.3°F (18.5°C). Weather in June »

July is a warm summer month in Corvallis, Montana, with average temperature fluctuating between 46.8°F (8.2°C) and 77°F (25°C). The warmest month is July, with an average high-temperature of 77°F (25°C) and an average low-temperature of 46.8°F (8.2°C). Weather in July »

The last month of the summer, August, is another warm month in Corvallis, Montana, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 46.9°F (8.3°C). In August, the average high-temperature is practically the same as in July - a still warm 76.3°F (24.6°C). Weather in August »

September, the first month of the autumn, in Corvallis, is still a comfortable month, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 39.9°F (4.4°C). In Corvallis, the average high-temperature drops, from a warm 76.3°F (24.6°C) in August, to a comfortable 66.2°F (19°C). Weather in September »

October, like September, in Corvallis, Montana, is another fresh autumn month, with average temperature varying between 30.4°F (-0.9°C) and 50°F (10°C). In Corvallis, the average high-temperature plummets, from an enjoyable 66.2°F (19°C) in September, to a fresh 50°F (10°C). Weather in October »

The last month of the autumn, November, is also a wintry month in Corvallis, Montana, with average temperature varying between 36.1°F (2.3°C) and 21.9°F (-5.6°C). In November, the average high-temperature decreases, from a cool 50°F (10°C) in October, to a wintry 36.1°F (2.3°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in Corvallis, Montana, with average temperature fluctuating between 26.8°F (-2.9°C) and 14°F (-10°C). December is the coldest month, with an average high-temperature of 26.8°F (-2.9°C) and an average low-temperature of 14°F (-10°C). Weather in December »

What is the most humid month in Corvallis?

January is the most humid month in Corvallis, Montana, with an average relative humidity of 89%.

How many days does it rain in Corvallis?

In Corvallis, Montana, during the entire year, the rain falls for 163.6 days and collects up to 20.83" (529mm) of precipitation.

When does it snow in Corvallis?

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

How many days does it snow in Corvallis?

In Corvallis, Montana, during the entire year, snow falls for 101.1 days, and aggregates up to 59.17" (1503mm) of snow.

What is the month with the least sunshine in Corvallis?

January and December, with an average of 5.4h of sunshine, are months with the least sunshine in Corvallis.

What is the wettest month in Corvallis?

The wettest months in Corvallis, Montana, are February and April, with an average 2.36" (60mm) of rainfall.

What is the snowiest month in Corvallis?

The month with the most snowfall in Corvallis, Montana, is February when snow falls for 19.3 days and typically aggregates up to 13.03" (331mm) of snow.

When is the lowest UV index in Corvallis?

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

When it does not snow in Corvallis?

June through August are months without snowfall.

When are the longest days in Corvallis?

June has the longest days of the year in Corvallis, with an average of 15.7h of daylight.

What is the warmest month in Corvallis?

The warmest month in Corvallis, Montana, is July, with an average high-temperature of 77°F (25°C) and an average low-temperature of 46.8°F (8.2°C).

What are the months with the most sunshine in Corvallis?

July and August, with an average of 11.7h of sunshine, are months with the most sunshine in Corvallis, Montana.

When is the highest UV index in Corvallis?

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

What is the least humid month in Corvallis?

The least humid month is August, with an average relative humidity of 50%.

What is the driest month in Corvallis?

The month with the least rainfall is August when the rain falls for 8.7 days and typically collects 0.75" (19mm) of precipitation.

What is the coldest month in Corvallis?

December is the coldest month, with an average high-temperature of 26.8°F (-2.9°C) and an average low-temperature of 14°F (-10°C).

What is the month with the shortest days in Corvallis?

With an average of 8.7h of daylight, December has the shortest days of the year.
Average pressure - Corvallis, MT

The month with the highest atmospheric pressure is January (30.21").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Corvallis, MT

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average rainfall - Corvallis, MT

The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").

Average rainfall days - Corvallis, MT
Average snowfall - Corvallis, MT
Average snowfall days - Corvallis, MT

The month with the highest number of snowfall days is February (19.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine - Corvallis, MT

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

Months with the most sunshine are July and August (Average sunshine: 11.7h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days - Corvallis, MT
Average visibility - Corvallis, MT

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