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

Monthly weather forecast and climate
Hamilton, MT

January, like December, is a freezing cold winter month in Hamilton, Montana, with average temperature varying between 28.8°F (-1.8°C) and 16.2°F (-8.8°C). In Hamilton, the average high-temperature in January is relatively 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 also a subzero cold month in Hamilton, Montana, with average temperature fluctuating between 28.8°F (-1.8°C) and 15.1°F (-9.4°C). In February, the average high-temperature remains equal 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 wintry month in Hamilton, Montana, with average temperature ranging between max 36°F (2.2°C) and min 21°F (-6.1°C). In Hamilton, Montana, the average high-temperature in March slightly increases, from a subzero cold 28.8°F (-1.8°C) in February, to a cold 36°F (2.2°C). Weather in March »

April in Hamilton, Montana, is a frosty spring month, with average temperature ranging between max 43.5°F (6.4°C) and min 25.9°F (-3.4°C). In Hamilton, Montana, the average high-temperature in April marginally rises, from a cold 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 moderate month in Hamilton, Montana, with temperature in the range of an average high of 56.7°F (13.7°C) and an average low of 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 »

June, the first month of the summer, in Hamilton, is an enjoyable month, with average temperature fluctuating between 40.6°F (4.8°C) and 65.3°F (18.5°C). In June, the average high-temperature marginally rises, from a moderate 56.7°F (13.7°C) in May, to a comfortable 65.3°F (18.5°C). Weather in June »

July in Hamilton, Montana, is a moderately hot summer month, with temperature in the range of an average high of 77°F (25°C) and an average low of 46.8°F (8.2°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 Hamilton, Montana, with average temperature varying between 46.9°F (8.3°C) and 76.3°F (24.6°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 76.3°F (24.6°C). Weather in August »

September, the first month of the autumn, in Hamilton, is also an enjoyable month, with average temperature fluctuating between 66.2°F (19°C) and 39.9°F (4.4°C). In Hamilton, the average high-temperature in September drops, from a moderately hot 76.3°F (24.6°C) in August, to an enjoyable 66.2°F (19°C). Weather in September »

October, like September, in Hamilton, Montana, is another fresh autumn month, with average temperature varying between 30.4°F (-0.9°C) and 50°F (10°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 »

November, the last month of the autumn, in Hamilton, is another cold month, 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 cool 50°F (10°C) in October, to a cold 36.1°F (2.3°C). Weather in November »

December, the first month of the winter, in Hamilton, is also a subzero cold month, with average temperature fluctuating between 26.8°F (-2.9°C) and 14°F (-10°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 Hamilton?

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

How much does it rain in Hamilton?

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

When does it snow in Hamilton?

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

How many days does it snow in Hamilton?

In Hamilton, 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 Hamilton?

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

What is the rainiest month in Hamilton?

Months with the most rainfall are February and April, with an average 2.36" (60mm) of precipitation.

What is the snowiest month in Hamilton?

The month with the most snowfall in Hamilton, 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 Hamilton?

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

When it does not snow in Hamilton?

June through August are months without snowfall in Hamilton.

When are the longest days in Hamilton?

The month with the longest days is June, with an average of 15.7h of daylight.

What is the warmest month in Hamilton?

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

What is the month with the most sunshine in Hamilton?

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

When is the highest UV index in Hamilton?

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

What is the least humid month in Hamilton?

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

What is the driest month in Hamilton?

August is the month with the least rainfall in Hamilton. Rain falls for 8.7 days and accumulates 0.75" (19mm) of precipitation.

What is the coldest month in Hamilton?

The coldest month in Hamilton, Montana, 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 Hamilton?

December has the shortest days of the year in Hamilton, with an average of 8.7h of daylight.
Average rainfall - Hamilton, MT

The wettest months (with the highest rainfall) are February and April (60mm).
The driest month (with the least rainfall) is August (19mm).

Average rainfall days - Hamilton, MT
Average snowfall - Hamilton, MT
Average snowfall days - Hamilton, 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 - Hamilton, 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).