Monthly weather forecast and climate
Troy, MT

Weather in January

January, like December, is another subzero cold winter month in Troy, Montana, with average temperature fluctuating between 15.3°F (-9.3°C) and 28.8°F (-1.8°C). In Troy, 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 »

Weather in February

February, the last month of the winter, in Troy, is another freezing cold month, with average temperature fluctuating between 29.7°F (-1.3°C) and 15.8°F (-9°C). In February, the average high-temperature is relatively the same as in January - a still subzero cold 29.7°F (-1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Troy, Montana, with average temperature ranging between max 37°F (2.8°C) and min 22.6°F (-5.2°C). In Troy, the average high-temperature slightly increases, from a freezing cold 29.7°F (-1.3°C) in February, to a cold 37°F (2.8°C). Weather in March »

Weather in April

April in Troy, Montana, is a frosty spring month, with temperature in the range of an average low of 28°F (-2.2°C) and an average high of 46.2°F (7.9°C). In Troy, the average high-temperature increases, from a wintry 37°F (2.8°C) in March, to a frosty 46.2°F (7.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a mild month in Troy, Montana, with temperature in the range of an average high of 59.5°F (15.3°C) and an average low of 36.1°F (2.3°C). In May, the average high-temperature rises, from a chilly 46.2°F (7.9°C) in April, to a mild 59.5°F (15.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a comfortable month in Troy, Montana, with average temperature varying between 41.5°F (5.3°C) and 66.2°F (19°C). In Troy, the average high-temperature in June marginally rises, from a moderate 59.5°F (15.3°C) in May, to a comfortable 66.2°F (19°C). Weather in June »

Weather in July

July is a warm summer month in Troy, Montana, with average temperature ranging between min 46.8°F (8.2°C) and max 77.4°F (25.2°C). In Troy, the average high-temperature in July rises, from an enjoyable 66.2°F (19°C) in June, to a moderately hot 77.4°F (25.2°C). Weather in July »

Weather in August

August, the last month of the summer, in Troy, is also a moderately hot month, with average temperature varying between 47.3°F (8.5°C) and 77.5°F (25.3°C). The warmest month is August, with an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 47.3°F (8.5°C). Weather in August »

Weather in September

September, the first month of the autumn, in Troy, is also an enjoyable month, with average temperature ranging between max 66°F (18.9°C) and min 39.7°F (4.3°C). In Troy, the average high-temperature drops, from a warm 77.5°F (25.3°C) in August, to an enjoyable 66°F (18.9°C). Weather in September »

Weather in October

October, the same as September, in Troy, Montana, is a frosty autumn month, with average temperature fluctuating between 49.6°F (9.8°C) and 30.7°F (-0.7°C). In October, the average high-temperature significantly decreases, from an enjoyable 66°F (18.9°C) in September, to a frosty 49.6°F (9.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Troy, Montana, with average temperature fluctuating between 23°F (-5°C) and 36°F (2.2°C). In November, the average high-temperature drops, from a chilly 49.6°F (9.8°C) in October, to a cold 36°F (2.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Troy, Montana, with average temperature ranging between min 15.1°F (-9.4°C) and max 27.1°F (-2.7°C). The coldest month is December, with an average high-temperature of 27.1°F (-2.7°C) and an average low-temperature of 15.1°F (-9.4°C). Weather in December »
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FAQ

What is the most humid month in Troy?

January is the most humid month in Troy, with an average relative humidity of 94%.

How many days does it rain in Troy?

Throughout the year, there are 138.8 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

When does it snow in Troy?

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

How much does it snow in Troy?

In Troy, Montana, during the entire year, snow falls for 91.8 days, and aggregates up to 49.33" (1253mm) of snow.

What is the snowiest month in Troy?

The month with the most snowfall is January when snow falls for 18.1 days and typically aggregates up to 11.34" (288mm) of snow.

What is the month with the least sunshine in Troy?

January has the least sunshine of the year in Troy, with an average of 3h of sunshine.

When is the lowest UV index in Troy?

Months with the lowest UV index in Troy, Montana, are January, February, November and December, with an average maximum UV index of 1.

When it does not snow in Troy?

June through August are months without snowfall in Troy, Montana.

When are the longest days in Troy?

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

What is the month with the highest UV index in Troy?

June and July, with an average maximum UV index of 5, are months with the highest UV index in Troy.

What is the month with the most sunshine in Troy?

July and August, with an average of 11.6h of sunshine, are months with the most sunshine.

What is the warmest month in Troy?

With an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 47.3°F (8.5°C), August is the warmest month.

What is the least humid month in Troy?

With an average relative humidity of 53%, August is the least humid month in Troy, Montana.

What is the driest month in Troy?

August is the month with the least rainfall in Troy, Montana. Rain falls for 5.9 days and accumulates 0.43" (11mm) of precipitation.

What is the coldest month in Troy?

December is the coldest month, with an average high-temperature of 27.1°F (-2.7°C) and an average low-temperature of 15.1°F (-9.4°C).

What is the rainiest month in Troy?

The month with the most rainfall in Troy, Montana, is December when the rain falls for 9.6 days and typically aggregates up to 2.24" (57mm) of precipitation.

What is the month with the shortest days in Troy?

The month with the shortest days is December, with an average of 8.4h of daylight.

Average temperature
Troy, MT

Average temperature - Troy, MT

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (27.1°F).

The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).

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Average pressure
Troy, MT

Average pressure - Troy, MT

The month with the highest atmospheric pressure is January (30.18").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed
Troy, MT

Average wind speed - Troy, MT

The windiest months (with the highest average wind speed) are April and June (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).

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Average rainfall
Troy, MT

Average rainfall - Troy, MT

The wettest month (with the highest rainfall) is December (2.24").
The driest month (with the least rainfall) is August (0.43").

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Average rainfall days
Troy, MT

Average rainfall days - Troy, MT

The month with the highest number of rainy days is April (17.5 days).
The month with the least rainy days is August (5.9 days).

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Average snowfall
Troy, MT

Average snowfall - Troy, MT

The month with the highest snowfall is January (11.34").
Months with the least snowfall are June, July and August (0").

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Average snowfall days
Troy, MT

Average snowfall days - Troy, MT

The month with the highest number of snowfall days is December (20 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Troy, MT

Average daylight / Average sunshine - Troy, MT

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 3h).

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Average sunshine days
Troy, MT

Average sunshine days - Troy, MT

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (7.4 days).

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Average UV index
Troy, MT

Average UV index - Troy, MT

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 1).

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