Monthly weather forecast and climate
Jefferson City, MT

January, the same as December, in Jefferson City, Montana, is another subzero cold winter month, with average temperature ranging between min 14.5°F (-9.7°C) and max 29.7°F (-1.3°C). In January, the average high-temperature is essentially the same as in December - a still subzero cold 29.7°F (-1.3°C). Weather in January »

The last month of the winter, February, is also a subzero cold month in Jefferson City, Montana, with average temperature varying between 29.3°F (-1.5°C) and 13.5°F (-10.3°C). In February, the average high-temperature is practically the same as in January - a still subzero cold 29.3°F (-1.5°C). Weather in February »

The first month of the spring, March, is a cold month in Jefferson City, Montana, with average temperature varying between 21.6°F (-5.8°C) and 38.7°F (3.7°C). In Jefferson City, the average high-temperature in March increases, from a freezing cold 29.3°F (-1.5°C) in February, to a wintry 38.7°F (3.7°C). Weather in March »

April in Jefferson City, Montana, is a frosty spring month, with average temperature ranging between max 46.4°F (8°C) and min 27°F (-2.8°C). In April, the average high-temperature marginally rises, from a wintry 38.7°F (3.7°C) in March, to a frosty 46.4°F (8°C). Weather in April »

May, the last month of the spring, in Jefferson City, is a moderate month, with average temperature fluctuating between 58.5°F (14.7°C) and 35.2°F (1.8°C). In Jefferson City, the average high-temperature in May rises, from a chilly 46.4°F (8°C) in April, to a moderate 58.5°F (14.7°C). Weather in May »

The first month of the summer, June, is a pleasant month in Jefferson City, Montana, with average temperature varying between 42.4°F (5.8°C) and 68.5°F (20.3°C). In June, the average high-temperature rises, from a moderate 58.5°F (14.7°C) in May, to a pleasant 68.5°F (20.3°C). Weather in June »

July is a moderately hot summer month in Jefferson City, Montana, with average temperature fluctuating between 48.4°F (9.1°C) and 79.7°F (26.5°C). July is the warmest month, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 48.4°F (9.1°C). Weather in July »

August, the last month of the summer, in Jefferson City, is another warm month, with average temperature ranging between max 77.5°F (25.3°C) and min 48.6°F (9.2°C). In Jefferson City, the average high-temperature in August is essentially the same as in July - a still warm 77.5°F (25.3°C). Weather in August »

September, the first month of the autumn, in Jefferson City, is still a comfortable month, with temperature in the range of an average low of 42.4°F (5.8°C) and an average high of 67.5°F (19.7°C). In September, the average high-temperature decreases, from a warm 77.5°F (25.3°C) in August, to a comfortable 67.5°F (19.7°C). Weather in September »

October, the same as September, is a cool autumn month in Jefferson City, Montana, with average temperature fluctuating between 31.3°F (-0.4°C) and 50.9°F (10.5°C). In Jefferson City, the average high-temperature in October significantly decreases, from an enjoyable 67.5°F (19.7°C) in September, to a cool 50.9°F (10.5°C). Weather in October »

November, the last month of the autumn, in Jefferson City, is also a wintry month, with temperature in the range of an average low of 21.2°F (-6°C) and an average high of 36.9°F (2.7°C). In Jefferson City, Montana, the average high-temperature decreases, from a fresh 50.9°F (10.5°C) in October, to a cold 36.9°F (2.7°C). Weather in November »

December, the first month of the winter, in Jefferson City, is also a subzero cold month, with average temperature varying between 27°F (-2.8°C) and 12.6°F (-10.8°C). December is the coldest month, with an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 12.6°F (-10.8°C). Weather in December »

What is the most humid month in Jefferson City?

With an average relative humidity of 86%, January is the most humid month in Jefferson City.

How much does it rain in Jefferson City?

Throughout the year, in Jefferson City, Montana, there are 133.7 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

When does it snow in Jefferson City?

January through June, September through December are months with snowfall in Jefferson City.

How many days does it snow in Jefferson City?

Throughout the year, in Jefferson City, there are 105.8 snowfall days, and 55.12" (1400mm) of snow is accumulated.

What is the month with the least sunshine in Jefferson City?

Months with the least sunshine in Jefferson City are January and December, with an average of 5.6h of sunshine.

When does it snow the most in Jefferson City?

February is the month with the most snowfall in Jefferson City. Snow falls for 18 days and accumulates 9.72" (247mm) of snow.

What is the month with the lowest UV index in Jefferson City?

February is the month with the lowest UV index in Jefferson City, Montana, with an average maximum UV index of 1.

What is the wettest month in Jefferson City?

June is the month with the most rainfall. Rain falls for 16 days and accumulates 2.68" (68mm) of precipitation.

When are the longest days in Jefferson City?

June has the longest days of the year in Jefferson City, Montana, with an average of 15.8h of daylight.

What is the warmest month in Jefferson City?

With an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 48.4°F (9.1°C), July is the warmest month in Jefferson City.

When it does not snow in Jefferson City?

July and August are months without snowfall.

What month has the most sunshine in Jefferson City?

The month with the most sunshine is July, with an average of 11.7h of sunshine.

What is the month with the highest UV index in Jefferson City?

With an average maximum UV index of 6, July is the month with the highest UV index in Jefferson City, Montana.

What is the least humid month in Jefferson City?

August is the least humid month in Jefferson City, Montana, with an average relative humidity of 46%.

What is the coldest month in Jefferson City?

With an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 12.6°F (-10.8°C), December is the coldest month.

What is the driest month in Jefferson City?

The month with the least rainfall in Jefferson City, Montana, is December when the rain falls for 8.2 days and typically collects 0.79" (20mm) of precipitation.

What is the month with the shortest days in Jefferson City?

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

The month with the highest atmospheric pressure is January (30.19").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed - Jefferson City, MT

The windiest months (with the highest average wind speed) are January and November (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity - Jefferson City, MT
Average rainfall - Jefferson City, MT

The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is December (0.79").

Average rainfall days - Jefferson City, MT
Average snowfall - Jefferson City, MT
Average snowfall days - Jefferson City, MT

The month with the highest number of snowfall days is February (18 days).
Months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine - Jefferson City, MT

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.7h).

The month with the most sunshine is July (Average sunshine: 11.7h).
Months with the least sunshine are January and December (Average sunshine: 5.6).

Average sunshine days - Jefferson City, MT
Average visibility - Jefferson City, MT

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).