January weather forecast
Thompson Falls, MT

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Weather in January

January in Thompson Falls, Montana, ushers in the year with the quintessential winter months. Temperatures are predictably cold, particularly with low averages recording up to approximately 17.6°F (-8°C). The city is often shrouded in white, courtesy of the frequent snowfall experienced during this period. On most days, the sun barely peeks out, resulting in reduced daylight hours. The city's residents are well accustomed to the heavy coats and warm beverages that January's weather mandates.

Temperature

The transition from December to January sees average high-temperatures adjusting to a still subzero cold 30.7°F (-0.7°C), from a not significantly different 28.9°F (-1.7°C). Thompson Falls experiences a consistent average temperature of 17.6°F (-8°C) throughout the nights in January.

Humidity

With an average relative humidity of 93%, January is the most humid month.

Rainfall

January is the month with the most rainfall. Rain falls for 13.3 days and accumulates 3.11" (79mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Thompson Falls, during January, snow falls for 17.8 days and regularly aggregates up to 13.82" (351mm) of snow. In Thompson Falls, during the entire year, snow falls for 90.2 days and aggregates up to 58.15" (1477mm) of snow.

Daylight

In January, the average length of the day is 8h and 58min.
On the first day of January, sunrise is at 8:29 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 5:40 pm MST.

Sunshine

With an average of 3.5h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 1 suggests these recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in January?

January temperatures vary between a high-temperature of 30.7°F (-0.7°C) and a low-temperature of 17.6°F (-8°C).

What is the most humid month?

January is the most humid month, with an average relative humidity of 93%.

What is the average humidity in January?

In January, the average relative humidity is 93%.

What is the rainiest month?

The month with the most rainfall is January, when the rain falls for 13.3 days and typically aggregates up to 3.11" (79mm) of precipitation.

How many days does it rain in January?

In Thompson Falls, in January, during 13.3 rainfall days, 3.11" (79mm) of precipitation is typically accumulated.

How much does it snow in January?

In Thompson Falls, in January, during 17.8 snowfall days, 13.82" (351mm) of snow is typically accumulated.

How many hours of daylight does Thompson Falls have in January?

The average day length in January in Thompson Falls is 8h and 58min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 8:29 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 5:40 pm MST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.5h of sunshine.

How long on average sun shines in January?

In Thompson Falls, the average sunshine duration in January is 3.5h.

What are the months with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

What is the UV index intensity in January?

The average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
Thompson Falls, MT

Average temperature in January - Thompson Falls, MT
  • Average high temperature in January: 30.7°F

The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in January: 17.6°F

The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).

Average pressure in January
Thompson Falls, MT

Average pressure in January - Thompson Falls, MT
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Thompson Falls, MT

Average wind speed in January - Thompson Falls, MT
  • Average wind speed in January: 4.2mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).

Average humidity in January
Thompson Falls, MT

Average humidity in January - Thompson Falls, MT
  • Average humidity in January: 93%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).

Average rainfall in January
Thompson Falls, MT

Average rainfall in January - Thompson Falls, MT
  • Average rainfall in January: 3.11"

The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").

Average rainfall days in January
Thompson Falls, MT

Average rainfall days in January - Thompson Falls, MT
  • Average rainfall days in January: 13.3 days

The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).

Average snowfall in January
Thompson Falls, MT

Average snowfall in January - Thompson Falls, MT
  • Average snowfall in January: 13.82"

The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Thompson Falls, MT

Average snowfall days in January - Thompson Falls, MT
  • Average snowfall days in January: 17.8 days

The month with the highest number of snowfall days is December (20.4 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in January /
Average sunshine in January
Thompson Falls, MT

Average daylight in January / Average sunshine in January - Thompson Falls, 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: 3h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in January
Thompson Falls, MT

Average sunshine days in January - Thompson Falls, MT
  • Average sunshine days in January: 8.8 days

The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).

Average UV index in January
Thompson Falls, MT

Average UV index in January - Thompson Falls, MT
  • Average UV index in January: 1

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

Average cloud cover in January
Thompson Falls, MT

Average cloud cover in January - Thompson Falls, MT
  • Average cloud cover in January: 65

The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in January
Thompson Falls, MT

Average visibility in January - Thompson Falls, MT
  • Average visibility in January: 3mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).

Thompson Falls, Montana, USA

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