Climate and monthly weather forecast
Fort Smith, MT

Share

Weather in January

January, the same as December, in Fort Smith, Montana, is another subzero cold winter month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 17.8°F (-7.9°C). With the advent of January, Fort Smith's high-temperatures adjust to a still freezing cold 31.1°F (-0.5°C), closely aligning with the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Fort Smith, Montana, with an average temperature ranging between max 31.1°F (-0.5°C) and min 16.5°F (-8.6°C). The ushering in of February brings an average high-temperature of a still freezing cold 31.1°F (-0.5°C), closely mirroring the a subzero cold 31.1°F (-0.5°C) of January. Weather in February »

Weather in March

March, the first month of the spring in Fort Smith, is a cold month, with temperature in the range of an average low of 27.1°F (-2.7°C) and an average high of 42.6°F (5.9°C). March's arrival sees a rise in the average high-temperature, jumping from February's freezing cold 31.1°F (-0.5°C) to a cold 42.6°F (5.9°C). Weather in March »

Weather in April

April is a cool spring month in Fort Smith, Montana, with an average temperature varying between 33.1°F (0.6°C) and 51.1°F (10.6°C). The arrival of April brings a soft temperature shift, with the average high-temperature nudging from a wintry 42.6°F (5.9°C) in March to a fresh 51.1°F (10.6°C). Weather in April »

Weather in May

May, the last month of the spring in Fort Smith, is a comfortable month, with an average temperature varying between 42.4°F (5.8°C) and 61.3°F (16.3°C). The beginning of May signals a rise in the average high-temperature, moving from a cool 51.1°F (10.6°C) in April to a refreshing 61.3°F (16.3°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Fort Smith, Montana, with an average temperature varying between 73°F (22.8°C) and 51.4°F (10.8°C). With the transition into June, Fort Smith experiences an increase in average high-temperatures, moving up from a refreshing 61.3°F (16.3°C) in May to an agreeable 73°F (22.8°C). Weather in June »

Weather in July

July in Fort Smith, Montana, is a moderately hot summer month, with an average temperature varying between 83.1°F (28.4°C) and 58.6°F (14.8°C). July, on average, is the warmest month, registering a high temperature of 83.1°F (28.4°C) and a low of 58.6°F (14.8°C). Throughout July, the heat index is estimated at 82.4°F (28°C). Weather in July »

Weather in August

August, the last month of the summer in Fort Smith, is another warm month, with an average temperature varying between 58.5°F (14.7°C) and 81.3°F (27.4°C). Fort Smith sees the arrival of August with an average high-temperature of a still moderately hot 81.3°F (27.4°C), indicating a subtle variation from July. Weather in August »

Weather in September

September, the first month of the autumn in Fort Smith, is still a pleasant month, with an average temperature varying between 51.3°F (10.7°C) and 71.4°F (21.9°C). Fort Smith's transition into September involves a shift in temperature, receding from a moderately hot 81.3°F (27.4°C) in August to a pleasant 71.4°F (21.9°C). Weather in September »

Weather in October

October, like September, in Fort Smith, Montana, is another fresh autumn month, with an average temperature fluctuating between 54.5°F (12.5°C) and 38.7°F (3.7°C). Fort Smith witnesses a significant decrease in the average high-temperature with the arrival of October, falling from September's agreeable 71.4°F (21.9°C) to a cool 54.5°F (12.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an icy month in Fort Smith, Montana, with an average temperature varying between 40.8°F (4.9°C) and 27.7°F (-2.4°C). With November's arrival, Fort Smith sees a decrease in average high-temperatures, moving from a cool 54.5°F (12.5°C) in October to a cold 40.8°F (4.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Fort Smith, Montana, with temperature in the range of an average high of 29.7°F (-1.3°C) and an average low of 16.9°F (-8.4°C). December, marked by an average high-temperature of 29.7°F (-1.3°C) and a low-temperature of 16.9°F (-8.4°C), is the coldest month. Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How many days does it rain in Fort Smith?

In Fort Smith, during the entire year, the rain falls for 128.8 days and collects up to 12.64" (321mm) of precipitation.

When does it snow in Fort Smith?

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

How much does it snow in Fort Smith?

In Fort Smith, Montana, during the entire year, snow falls for 66 days and aggregates up to 33.07" (840mm) of snow.

What is the most humid month in Fort Smith?

The most humid month is February, with an average relative humidity of 77%.

When does it snow the most in Fort Smith?

The month with the most snowfall in Fort Smith is February, when snow falls for 14.3 days and typically aggregates up to 6.85" (174mm) of snow.

What is the month with the least sunshine in Fort Smith?

With an average of 5.7h of sunshine, February has the least sunshine of the year in Fort Smith.

When is Daylight Saving Time (DST) in Fort Smith?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Fort Smith, 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 wettest month in Fort Smith?

May is the month with the most rainfall. Rain falls for 18 days and accumulates 2.01" (51mm) of precipitation.

When it does not snow in Fort Smith?

June through August are months without snowfall in Fort Smith.

When are the longest days in Fort Smith?

With an average of 15h and 36min of daylight, June has the longest days of the year in Fort Smith.

When is the highest UV index in Fort Smith?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the hottest time of year in Fort Smith?

July is the month that records the highest temperatures, with averages ranging from a high of 83.1°F (28.4°C) to a low of 58.6°F (14.8°C).

What month has the most sunshine in Fort Smith?

With an average of 11.9h of sunshine, July has the most sunshine of the year in Fort Smith.

What is the least humid month in Fort Smith?

With an average relative humidity of 41%, August is the least humid month in Fort Smith, Montana.

What is the coldest time of year in Fort Smith?

December, with an average high of 29.7°F (-1.3°C) and a low of 16.9°F (-8.4°C), signifies the coldest month of the year in Fort Smith.

What is the driest month in Fort Smith?

The month with the least rainfall in Fort Smith is December, when the rain falls for 6.3 days and typically collects 0.59" (15mm) of precipitation.

What is the month with the shortest days in Fort Smith?

December has the shortest days of the year in Fort Smith, with an average of 8h and 48min of daylight.

What is the month with the lowest UV index in Fort Smith?

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

Average temperature
Fort Smith, MT

Average temperature - Fort Smith, MT

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (29.7°F).

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is February (16.5°F).

Average pressure
Fort Smith, MT

Average pressure - Fort Smith, MT

The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed
Fort Smith, MT

Average wind speed - Fort Smith, MT

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity
Fort Smith, MT

Average humidity - Fort Smith, MT

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (41%).

Average rainfall
Fort Smith, MT

Average rainfall - Fort Smith, MT

The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is December (0.59").

Average rainfall days
Fort Smith, MT

Average rainfall days - Fort Smith, MT

The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and December (6.3 days).

Average snowfall
Fort Smith, MT

Average snowfall - Fort Smith, MT

The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July and August (0").

Average snowfall days
Fort Smith, MT

Average snowfall days - Fort Smith, MT

The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Fort Smith, MT

Average daylight / Average sunshine - Fort Smith, MT

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days
Fort Smith, MT

Average sunshine days - Fort Smith, MT

The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is May (8.7 days).

Average visibility
Fort Smith, MT

Average visibility - Fort Smith, 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).

Fort Smith, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location