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

Monthly weather forecast and climate
Darby, MT

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

The last month of the winter, February, is also a subzero cold month in Darby, Montana, with average temperature varying between 15.1°F (-9.4°C) and 28.8°F (-1.8°C). In February, the average high-temperature remains equal as in January - a still subzero cold 28.8°F (-1.8°C). Weather in February »

The first month of the spring, March, is a cold month in Darby, Montana, with temperature in the range of an average high of 36°F (2.2°C) and an average low of 21°F (-6.1°C). In March, the average high-temperature marginally rises, 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 frosty spring month in Darby, Montana, with average temperature fluctuating between 43.5°F (6.4°C) and 25.9°F (-3.4°C). In April, the average high-temperature slightly increases, from a wintry 36°F (2.2°C) in March, to a chilly 43.5°F (6.4°C). Weather in April »

The last month of the spring, May, is a mild month in Darby, Montana, with average temperature fluctuating between 56.7°F (13.7°C) and 33.4°F (0.8°C). In Darby, the average high-temperature increases, 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 a comfortable month in Darby, Montana, with average temperature varying between 40.6°F (4.8°C) and 65.3°F (18.5°C). In Darby, the average high-temperature in June slightly increases, from a moderate 56.7°F (13.7°C) in May, to an enjoyable 65.3°F (18.5°C). Weather in June »

July in Darby, Montana, is a moderately hot summer month, 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 also a moderately hot month in Darby, 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 Darby, the average high-temperature in August is relatively the same as in July - a still moderately hot 76.3°F (24.6°C). Weather in August »

The first month of the autumn, September, is also an enjoyable month in Darby, Montana, with average temperature ranging between max 66.2°F (19°C) and min 39.9°F (4.4°C). In September, the average high-temperature drops, from a warm 76.3°F (24.6°C) in August, to an enjoyable 66.2°F (19°C). Weather in September »

October, like September, in Darby, Montana, is another fresh autumn month, with temperature in the range of an average high of 50°F (10°C) and an average low of 30.4°F (-0.9°C). In October, the average high-temperature significantly decreases, from a comfortable 66.2°F (19°C) in September, to a cool 50°F (10°C). Weather in October »

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

December, the first month of the winter, in Darby, is still a freezing cold month, with average temperature fluctuating between 14°F (-10°C) and 26.8°F (-2.9°C). The coldest month is December, 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 Darby?

The most humid month in Darby is January, with an average relative humidity of 89%.

How many days does it rain in Darby?

Throughout the year, there are 163.6 rainfall days, and 20.83" (529mm) of precipitation is accumulated.

When does it snow in Darby?

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

How much does it snow in Darby?

Throughout the year, in Darby, Montana, there are 101.1 snowfall days, and 59.17" (1503mm) of snow is accumulated.

What is the month with the least sunshine in Darby?

Months with the least sunshine in Darby, Montana, are January and December, with an average of 5.4h of sunshine.

What is the wettest month in Darby?

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

What is the snowiest month in Darby?

February is the month with the most snowfall. Snow falls for 19.3 days and accumulates 13.03" (331mm) of snow.

What are the months with the lowest UV index in Darby?

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

When it does not snow in Darby?

In Darby, Montana, snow does not fall in June through August.

When are the longest days in Darby?

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

What is the warmest month in Darby?

July is the warmest month in Darby, 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 Darby?

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

When is the highest UV index in Darby?

The month with the highest UV index is July, with an average maximum UV index of 5.

What is the least humid month in Darby?

With an average relative humidity of 50%, August is the least humid month in Darby, Montana.

What is the driest month in Darby?

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

What is the coldest month in Darby?

The coldest month in Darby is December, 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 Darby?

With an average of 8.7h of daylight, December has the shortest days of the year.
Average rainfall - Darby, 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 - Darby, MT
Average snowfall - Darby, MT
Average snowfall days - Darby, 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 - Darby, 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).