January weather forecast
Fairfield, MT

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Weather in January

January, like December, is a freezing cold winter month in Fairfield, Montana, with an average temperature fluctuating between 30.4°F (-0.9°C) and 18°F (-7.8°C).

Temperature

The introduction of January sees an average high-temperature of a still freezing cold 30.4°F (-0.9°C), hardly deviating from December. Throughout January, the nighttime temperature in Fairfield averages to a still subzero cold 18°F (-7.8°C).

Humidity

January is the most humid month in Fairfield, with an average relative humidity of 76%.

Rainfall

In Fairfield, during January, the rain falls for 3.3 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Fairfield, Montana, during the entire year, the rain falls for 73.3 days and collects up to 9.17" (233mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Fairfield, during January, snow falls for 8.8 days and regularly aggregates up to 2.72" (69mm) of snow. Throughout the year, in Fairfield, there are 50.3 snowfall days, and 21.26" (540mm) of snow is accumulated.

Daylight

The average length of the day in January in Fairfield is 8h and 58min.
On the first day of the month, sunrise is at 8:16 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:55 am and sunset at 5:26 pm MST.

Sunshine

The average sunshine in January in Fairfield, Montana, is 5.9h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Fairfield. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 during January translates into the following guidance:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Fairfield in January?

January temperatures in Fairfield, Montana, vary between a high-temperature of 30.4°F (-0.9°C) and a low-temperature of 18°F (-7.8°C).

What is the most humid month in Fairfield?

The most humid month is January, with an average relative humidity of 76%.

What is the average humidity in January in Fairfield?

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

How much does it rain in Fairfield in January?

In Fairfield, during January, the rain falls for 3.3 days and regularly aggregates up to 0.39" (10mm) of precipitation.

How much does it snow in Fairfield in January?

In Fairfield, Montana, in January, during 8.8 snowfall days, 2.72" (69mm) of snow is typically accumulated.

How many hours of daylight does Fairfield have in January?

In January, the average day length in Fairfield is 8h and 58min.

What time are sunrise and sunset in January in Fairfield?

In January, on the first day of the month, sunrise is at 8:16 am and sunset at 4:46 pm. On the last day of the month, in Fairfield, Montana, sunrise is at 7:55 am and sunset at 5:26 pm MST.

How long on average sun shines in January in Fairfield?

The average sunshine duration in January in Fairfield is 5.9h.

When is the lowest UV index in Fairfield?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Fairfield, Montana.

How high is the UV index in January in Fairfield?

The average daily maximum UV index in January in Fairfield is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe 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
Fairfield, MT

Average temperature in January - Fairfield, MT
  • Average high temperature in January: 30.4°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.8°F).

  • Average low temperature in January: 18°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).

Average pressure in January
Fairfield, MT

Average pressure in January - Fairfield, MT
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in January
Fairfield, MT

Average wind speed in January - Fairfield, MT
  • Average wind speed in January: 11.2mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).

Average humidity in January
Fairfield, MT

Average humidity in January - Fairfield, MT
  • Average humidity in January: 76%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (42%).

Average rainfall in January
Fairfield, MT

Average rainfall in January - Fairfield, MT
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is December (0.35").

Average rainfall days in January
Fairfield, MT

Average rainfall days in January - Fairfield, MT
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is November (2.7 days).

Average snowfall in January
Fairfield, MT

Average snowfall in January - Fairfield, MT
  • Average snowfall in January: 2.72"

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Fairfield, MT

Average snowfall days in January - Fairfield, MT
  • Average snowfall days in January: 8.8 days

The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in January /
Average sunshine in January
Fairfield, MT

Average daylight in January / Average sunshine in January - Fairfield, MT
  • Average daylight in January: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in January: 5h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in January
Fairfield, MT

Average sunshine days in January - Fairfield, MT
  • Average sunshine days in January: 20.8 days

The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is February (15.8 days).

Average UV index in January
Fairfield, MT

Average UV index in January - Fairfield, MT
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in January
Fairfield, MT

Average cloud cover in January - Fairfield, MT
  • Average cloud cover in January: 37

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 14).

Average visibility in January
Fairfield, MT

Average visibility in January - Fairfield, 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).

Fairfield, Montana, USA

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