January weather forecast
Fort Smith, MT

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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).

Temperature

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. Fort Smith records an average nighttime low of 17.8°F (-7.9°C) in January.

Humidity

In Fort Smith, the average relative humidity in January is 76%.

Rainfall

In January, in Fort Smith, the rain falls for 6.3 days. Throughout January, 0.67" (17mm) of precipitation is accumulated. In Fort Smith, during the entire year, the rain falls for 128.8 days and collects up to 12.64" (321mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Fort Smith, during January, snow falls for 11.8 days and regularly aggregates up to 4.76" (121mm) of snow. In Fort Smith, Montana, during the entire year, snow falls for 66 days and aggregates up to 33.07" (840mm) of snow.

Daylight

In Fort Smith, the average length of the day in January is 9h and 13min.
On the first day of the month, sunrise is at 7:50 am and sunset at 4:39 pm. On the last day of January, sunrise is at 7:33 am and sunset at 5:16 pm MST.

Sunshine

In January, the average sunshine in Fort Smith is 5.9h.

UV index

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: During January, 2 as the daily maximum UV index converts into the following advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Fort Smith in January?

Fort Smith in January has an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 17.8°F (-7.9°C).

What is the average humidity in January in Fort Smith?

In Fort Smith, the average relative humidity in January is 76%.

How much does it rain in Fort Smith in January?

In Fort Smith, Montana, in January, during 6.3 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How many days does it snow in January in Fort Smith?

In Fort Smith, Montana, in January, during 11.8 snowfall days, 4.76" (121mm) of snow is typically accumulated.

How many hours of daylight does Fort Smith have in January?

The average day length in January in Fort Smith is 9h and 13min.

When is the sunrise / sunset in January in Fort Smith?

In January, on the first day of the month, sunrise is at 7:50 am and sunset at 4:39 pm. On the last day of the month, in Fort Smith, Montana, sunrise is at 7:33 am and sunset at 5:16 pm MST.

How long on average sun shines in January in Fort Smith?

The average sunshine duration in January in Fort Smith, Montana, is 5.9h.

What is the UV index intensity in January in Fort Smith?

In Fort Smith, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Fort Smith, MT

Average temperature in January - Fort Smith, MT
  • Average high temperature in January: 31.1°F

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).

  • Average low temperature in January: 17.8°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 in January
Fort Smith, MT

Average pressure in January - Fort Smith, MT
  • Average pressure in January: 30.13"Hg

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 in January
Fort Smith, MT

Average wind speed in January - Fort Smith, MT
  • Average wind speed in January: 9.5mph

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 in January
Fort Smith, MT

Average humidity in January - Fort Smith, MT
  • Average humidity in January: 76%

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

Average rainfall in January
Fort Smith, MT

Average rainfall in January - Fort Smith, MT
  • Average rainfall in January: 0.67"

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 in January
Fort Smith, MT

Average rainfall days in January - Fort Smith, MT
  • Average rainfall days in January: 6.3 days

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 in January
Fort Smith, MT

Average snowfall in January - Fort Smith, MT
  • Average snowfall in January: 4.76"

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 in January
Fort Smith, MT

Average snowfall days in January - Fort Smith, MT
  • Average snowfall days in January: 11.8 days

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 in January /
Average sunshine in January
Fort Smith, MT

Average daylight in January / Average sunshine in January - Fort Smith, MT
  • Average daylight in January: 9h and 1min

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).

  • Average sunshine in January: 5h and 5min

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 in January
Fort Smith, MT

Average sunshine days in January - Fort Smith, MT
  • Average sunshine days in January: 15.9 days

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 UV index in January
Fort Smith, MT

Average UV index in January - Fort Smith, MT
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in January
Fort Smith, MT

Average cloud cover in January - Fort Smith, MT
  • Average cloud cover in January: 39

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 14).

Average visibility in January
Fort Smith, MT

Average visibility in January - Fort Smith, MT
  • Average visibility in January: 6mi

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

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