Climate and monthly weather forecast
Saint Marie, MT

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Weather in January

January, like December, is another subzero cold winter month in Saint Marie, Montana, with an average temperature varying between 10.9°F (-11.7°C) and 24.3°F (-4.3°C). The onset of January manifests an average high-temperature of a still freezing cold 24.3°F (-4.3°C), demonstrating a minor variation from the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Saint Marie, Montana, with an average temperature fluctuating between 10.2°F (-12.1°C) and 23.7°F (-4.6°C). February, characterized by an average high temperature of 23.7°F (-4.6°C) and a low temperature of 10.2°F (-12.1°C), is generally the coldest month. Weather in February »

Weather in March

March, the first month of the spring in Saint Marie, is a cold month, with an average temperature varying between 23.9°F (-4.5°C) and 38.3°F (3.5°C). Saint Marie in March showcases a distinct temperature shift, moving from an average high of a freezing cold 23.7°F (-4.6°C) in February to an icy 38.3°F (3.5°C). Weather in March »

Weather in April

April is a fresh spring month in Saint Marie, Montana, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 36°F (2.2°C). The shift from March to April is marked by an increase in the average high-temperature, moving from a wintry 38.3°F (3.5°C) to a cool 52.2°F (11.2°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Saint Marie, Montana, with an average temperature fluctuating between 46.9°F (8.3°C) and 64.6°F (18.1°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a cool 52.2°F (11.2°C) to a refreshing 64.6°F (18.1°C). Weather in May »

Weather in June

June, the first month of the summer in Saint Marie, is a moderately hot month, with an average temperature ranging between min 55.9°F (13.3°C) and max 74.7°F (23.7°C). Saint Marie's June weather shows an increase in high-temperatures, moving from May's refreshing 64.6°F (18.1°C) to a warm 74.7°F (23.7°C). Weather in June »

Weather in July

July, like June, in Saint Marie, Montana, is another warm summer month, with an average temperature varying between 63.3°F (17.4°C) and 83.1°F (28.4°C). July registers as the month with the highest average temperatures, reaching 83.1°F (28.4°C) at its peak and 63.3°F (17.4°C) at the lowest. In July, the average heat index is computed to be 82.4°F (28°C). Weather in July »

Weather in August

August, the last month of the summer in Saint Marie, is another warm month, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 81.7°F (27.6°C). The commencement of August records an average high-temperature of a still moderately hot 81.7°F (27.6°C), barely varying from July's 83.1°F (28.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Saint Marie, Montana, with an average temperature varying between 53.8°F (12.1°C) and 70.2°F (21.2°C). September is characterized by a reduction in the average high-temperature, from a moderately hot 81.7°F (27.6°C) in August to an agreeable 70.2°F (21.2°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Saint Marie, Montana, with an average temperature ranging between min 39.6°F (4.2°C) and max 53.8°F (12.1°C). Saint Marie experiences a clear temperature downturn in October, with average high-temperatures moving from a pleasant 70.2°F (21.2°C) in September to a fresh 53.8°F (12.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Saint Marie, Montana, with an average temperature ranging between max 38.3°F (3.5°C) and min 25.7°F (-3.5°C). Saint Marie experiences a clear temperature downturn in November, with average high-temperatures moving from a cool 53.8°F (12.1°C) in October to a cold 38.3°F (3.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Saint Marie, Montana, with an average temperature ranging between max 24.6°F (-4.1°C) and min 12.7°F (-10.7°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from an icy 38.3°F (3.5°C) in November to a subzero cold 24.6°F (-4.1°C). Weather in December »
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

With an average relative humidity of 86%, January is the most humid month.

What is the driest month?

January and February are months with the least rain in Saint Marie when the rain falls for 2.5 days and typically aggregates up to 0.35" (9mm) of rain.

How much does it rain?

In Saint Marie, during the entire year, the rain falls for 90.8 days and collects up to 11.1" (282mm) of precipitation.

When does it snow?

January through May, October through December are months with snowfall.

How many days does it snow?

In Saint Marie, during the entire year, snow falls for 43.8 days and aggregates up to 13.11" (333mm) of snow.

What are the coldest months?

In Saint Marie, February is the month with the lowest recorded average temperatures, measuring a high of 23.7°F (-4.6°C) and a low of 10.2°F (-12.1°C).

What is the month with the least sunshine?

The month with the least sunshine is February, with an average of 4.7h of sunshine.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

What is the rainiest month?

The month with the most rainfall is June, when the rain falls for 13.2 days and typically aggregates up to 2.01" (51mm) of precipitation.

When it does not snow?

In Saint Marie, Montana, snow does not fall in June through September.

When are the longest days?

June has the longest days of the year, with an average of 16h and 0min of daylight.

What part of the year is the hottest?

The warmest temperatures in Saint Marie occur during July, when averages reach a peak of 83.1°F (28.4°C) and a low of 63.3°F (17.4°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 11.8h of sunshine.

When is the highest UV index?

The month with the highest UV index is July, with an average maximum UV index of 7.

What is the least humid month?

With an average relative humidity of 42%, August is the least humid month.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 8.6 days and typically aggregates up to 2.6" (66mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 8h and 24min of daylight.

When is the lowest UV index?

With an average maximum UV index of 1, December is the month with the lowest UV index.

Average temperature
Saint Marie, MT

Average temperature - Saint Marie, MT

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).

Average pressure
Saint Marie, MT

Average pressure - Saint Marie, MT

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed
Saint Marie, MT

Average wind speed - Saint Marie, MT

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).

Average humidity
Saint Marie, MT

Average humidity - Saint Marie, MT

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).

Average rainfall
Saint Marie, MT

Average rainfall - Saint Marie, MT

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").

Average rainfall days
Saint Marie, MT

Average rainfall days - Saint Marie, MT

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).

Average snowfall
Saint Marie, MT

Average snowfall - Saint Marie, MT

The month with the highest snowfall is December (2.6").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Saint Marie, MT

Average snowfall days - Saint Marie, MT

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Saint Marie, MT

Average daylight / Average sunshine - Saint Marie, MT

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days
Saint Marie, MT

Average sunshine days - Saint Marie, MT

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).

Average visibility
Saint Marie, MT

Average visibility - Saint Marie, MT

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Saint Marie, Montana, USA

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