Harrison
Montana, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Harrison, MT

January, like December, is another subzero cold winter month in Harrison, Montana, with average temperature ranging between max 30.2°F (-1°C) and min 13.8°F (-10.1°C). In January, the average high-temperature is essentially the same as in December - a still freezing cold 30.2°F (-1°C). Weather in January »

The last month of the winter, February, is also a subzero cold month in Harrison, Montana, with average temperature ranging between min 14.4°F (-9.8°C) and max 30.9°F (-0.6°C). In February, the average high-temperature is essentially the same as in January - a still freezing cold 30.9°F (-0.6°C). Weather in February »

March, the first month of the spring, in Harrison, is a wintry month, with average temperature fluctuating between 24.1°F (-4.4°C) and 41°F (5°C). In Harrison, the average high-temperature increases, from a subzero cold 30.9°F (-0.6°C) in February, to a cold 41°F (5°C). Weather in March »

April in Harrison, Montana, is a fresh spring month, with average temperature fluctuating between 30.4°F (-0.9°C) and 50.4°F (10.2°C). In April, the average high-temperature increases, from a cold 41°F (5°C) in March, to a fresh 50.4°F (10.2°C). Weather in April »

May, the last month of the spring, in Harrison, is an enjoyable month, with average temperature varying between 37.9°F (3.3°C) and 62.6°F (17°C). In Harrison, the average high-temperature rises, from a cool 50.4°F (10.2°C) in April, to a comfortable 62.6°F (17°C). Weather in May »

June, the first month of the summer, in Harrison, is a pleasant month, with temperature in the range of an average high of 72.9°F (22.7°C) and an average low of 44.4°F (6.9°C). In Harrison, Montana, the average high-temperature increases, from a comfortable 62.6°F (17°C) in May, to a pleasant 72.9°F (22.7°C). Weather in June »

July is a warm summer month in Harrison, Montana, with average temperature varying between 83.5°F (28.6°C) and 50.2°F (10.1°C). The warmest month is July, with an average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 50.2°F (10.1°C). In July, the average heat index is calculated to 83.7°F (28.7°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Harrison, Montana, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 81.9°F (27.7°C). In Harrison, Montana, the average high-temperature in August is relatively the same as in July - a still warm 81.9°F (27.7°C). Weather in August »

September, the first month of the autumn, in Harrison, is still a pleasant month, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 44.4°F (6.9°C). In September, the average high-temperature decreases, from a moderately hot 81.9°F (27.7°C) in August, to a pleasant 70.9°F (21.6°C). Weather in September »

October, like September, in Harrison, Montana, is a cool autumn month, with average temperature varying between 33.4°F (0.8°C) and 53.8°F (12.1°C). In Harrison, the average high-temperature declines considerably, from an agreeable 70.9°F (21.6°C) in September, to a cool 53.8°F (12.1°C). Weather in October »

November, the last month of the autumn, in Harrison, is another cold month, with average temperature fluctuating between 22.5°F (-5.3°C) and 39°F (3.9°C). In Harrison, the average high-temperature declines considerably, from a cool 53.8°F (12.1°C) in October, to a wintry 39°F (3.9°C). Weather in November »

December, the first month of the winter, in Harrison, is also a subzero cold month, with average temperature fluctuating between 12.7°F (-10.7°C) and 28°F (-2.2°C). December is the coldest month, with an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 12.7°F (-10.7°C). Weather in December »

What is the most humid month in Harrison?

January is the most humid month in Harrison, Montana, with an average relative humidity of 85%.

How many days does it rain in Harrison?

In Harrison, during the entire year, the rain falls for 134.2 days and collects up to 11.34" (288mm) of precipitation.

When does it snow in Harrison?

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

How much does it snow in Harrison?

Throughout the year, there are 79.6 snowfall days, and 30.08" (764mm) of snow is accumulated.

What is the month with the least sunshine in Harrison?

The month with the least sunshine is January, with an average of 5.9h of sunshine.

What is the snowiest month in Harrison?

February is the month with the most snowfall in Harrison, Montana. Snow falls for 16.5 days and accumulates 6.02" (153mm) of snow.

What is the rainiest month in Harrison?

The month with the most rainfall is June when the rain falls for 13.5 days and typically aggregates up to 1.57" (40mm) of precipitation.

When are the longest days in Harrison?

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

What is the warmest month in Harrison?

July is the warmest month in Harrison, with an average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 50.2°F (10.1°C).

When it does not snow in Harrison?

July and August are months without snowfall in Harrison.

What month has the most sunshine in Harrison?

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

When is the highest UV index in Harrison?

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

What is the least humid month in Harrison?

The least humid month in Harrison is August, with an average relative humidity of 44%.

What is the driest month in Harrison?

The month with the least rainfall in Harrison is August when the rain falls for 7.6 days and typically collects 0.51" (13mm) of precipitation.

What is the coldest month in Harrison?

With an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 12.7°F (-10.7°C), December is the coldest month in Harrison, Montana.

What is the month with the shortest days in Harrison?

With an average of 8.8h of daylight, December has the shortest days of the year in Harrison.

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

The month with the lowest UV index in Harrison, Montana, is December, with an average maximum UV index of 1.
Average temperature - Harrison, MT
Average rainfall - Harrison, MT
Average rainfall days - Harrison, MT

The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).

Average snowfall - Harrison, MT
Average snowfall days - Harrison, MT

The month with the highest number of snowfall days is February (16.5 days).
Months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine - Harrison, MT

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.8h).

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 5.9h).