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

Monthly weather forecast and climate
Shelby, MT

January, like December, is another subzero cold winter month in Shelby, Montana, with average temperature fluctuating between 28.8°F (-1.8°C) and 16°F (-8.9°C). In January, the average high-temperature is essentially the same as in December - a still freezing cold 28.8°F (-1.8°C). Weather in January »

February, the last month of the winter, in Shelby, is another freezing cold month, with average temperature fluctuating between 16°F (-8.9°C) and 28.9°F (-1.7°C). In February, the average high-temperature is almost the same as in January - a still freezing cold 28.9°F (-1.7°C). Weather in February »

The first month of the spring, March, is a wintry month in Shelby, Montana, with average temperature varying between 25.9°F (-3.4°C) and 40.8°F (4.9°C). In Shelby, the average high-temperature in March increases, from a freezing cold 28.9°F (-1.7°C) in February, to a wintry 40.8°F (4.9°C). Weather in March »

April is a fresh spring month in Shelby, Montana, with temperature in the range of an average low of 35.6°F (2°C) and an average high of 52.2°F (11.2°C). In April, the average high-temperature increases, from a cold 40.8°F (4.9°C) in March, to a cool 52.2°F (11.2°C). Weather in April »

The last month of the spring, May, is a comfortable month in Shelby, Montana, with average temperature fluctuating between 62.4°F (16.9°C) and 44.4°F (6.9°C). In Shelby, Montana, the average high-temperature increases, from a fresh 52.2°F (11.2°C) in April, to an enjoyable 62.4°F (16.9°C). Weather in May »

The first month of the summer, June, is a pleasant month in Shelby, Montana, with average temperature fluctuating between 50.9°F (10.5°C) and 71.2°F (21.8°C). In June, the average high-temperature marginally rises, from a comfortable 62.4°F (16.9°C) in May, to a pleasant 71.2°F (21.8°C). Weather in June »

July in Shelby, Montana, is a moderately hot summer month, with average temperature varying between 57.4°F (14.1°C) and 80.8°F (27.1°C). July is the warmest month, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 57.4°F (14.1°C). In July, the average heat index is estimated at 81°F (27.2°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Shelby, Montana, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 58.3°F (14.6°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 79.9°F (26.6°C). Weather in August »

September, the first month of the autumn, in Shelby, is still a pleasant month, with average temperature fluctuating between 68.9°F (20.5°C) and 50.7°F (10.4°C). In September, the average high-temperature decreases, from a warm 79.9°F (26.6°C) in August, to a pleasant 68.9°F (20.5°C). Weather in September »

October, the same as September, is a cool autumn month in Shelby, Montana, with average temperature fluctuating between 37.2°F (2.9°C) and 53.1°F (11.7°C). In October, the average high-temperature significantly decreases, from a pleasant 68.9°F (20.5°C) in September, to a cool 53.1°F (11.7°C). Weather in October »

The last month of the autumn, November, is another cold month in Shelby, Montana, with temperature in the range of an average low of 25.2°F (-3.8°C) and an average high of 39.4°F (4.1°C). In Shelby, the average high-temperature decreases, from a cool 53.1°F (11.7°C) in October, to a wintry 39.4°F (4.1°C). Weather in November »

The first month of the winter, December, is also a subzero cold month in Shelby, Montana, with average temperature ranging between min 15.4°F (-9.2°C) and max 27.7°F (-2.4°C). With an average high-temperature of 27.7°F (-2.4°C) and an average low-temperature of 15.4°F (-9.2°C), December is the coldest month. Weather in December »

What is the most humid month in Shelby?

With an average relative humidity of 80%, January is the most humid month in Shelby, Montana.

How many days does it rain in Shelby?

Throughout the year, in Shelby, there are 84.2 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

What is the driest month in Shelby?

Months with the least rainfall in Shelby are January and December Rain falls for 3.3 days and accumulates 0.39" (10mm) of rain.

When does it snow in Shelby?

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

How many days does it snow in Shelby?

Throughout the year, in Shelby, Montana, there are 53.7 snowfall days, and 20.47" (520mm) of snow is accumulated.

What is the month with the least sunshine in Shelby?

The month with the least sunshine in Shelby, Montana, is January, with an average of 5.4h of sunshine.

When is the lowest UV index in Shelby?

Months with the lowest UV index in Shelby are January through March, October through December, with an average maximum UV index of 2.

What is the snowiest month in Shelby?

February is the month with the most snowfall in Shelby. Snow falls for 10.3 days and accumulates 4.17" (106mm) of snow.

What is the wettest month in Shelby?

June is the month with the most rainfall in Shelby, Montana. Rain falls for 11.8 days and accumulates 2.01" (51mm) of precipitation.

When it does not snow in Shelby?

June through August are months without snowfall.

When are the longest days in Shelby?

With an average of 16.1h of daylight, June has the longest days of the year.

What is the warmest month in Shelby?

The warmest month in Shelby is July, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 57.4°F (14.1°C).

What month has the most sunshine in Shelby?

The month with the most sunshine in Shelby, Montana, is July, with an average of 11.9h of sunshine.

When is the highest UV index in Shelby?

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

What is the least humid month in Shelby?

The least humid month in Shelby is August, with an average relative humidity of 40%.

What is the coldest month in Shelby?

With an average high-temperature of 27.7°F (-2.4°C) and an average low-temperature of 15.4°F (-9.2°C), December is the coldest month in Shelby.

What is the month with the shortest days in Shelby?

The month with the shortest days is December, with an average of 8.4h of daylight.
Average temperature - Shelby, MT
Average rainfall - Shelby, MT

The wettest month (with the highest rainfall) is June (2.01").
Driest months (with the lowest rainfall) are January and December (0.39").

Average rainfall days - Shelby, MT

The month with the highest number of rainy days is May (13.9 days).
The month with the lowest number of rainy days is February (3.1 days).

Average snowfall - Shelby, MT
Average snowfall days - Shelby, MT

The month with the highest number of snowfall days is February (10.3 days).
Months with the lowest number of snowfall days are July and August (0 days).

Average daylight / Average sunshine - Shelby, MT
Average UV index - Shelby, MT