January 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).

Temperature

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. Saint Marie witnesses a consistent average low-temperature of 10.9°F (-11.7°C) throughout January.

Humidity

The most humid month is January, with an average relative humidity of 86%.

Rainfall

The months with the least rainfall are January and February Rain falls for 2.5 days and accumulates 0.35" (9mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Saint Marie, during January, snow falls for 7.9 days and regularly aggregates up to 1.93" (49mm) of snow. In Saint Marie, during the entire year, snow falls for 43.8 days and aggregates up to 13.11" (333mm) of snow.

Daylight

The average length of the day in January is 8h and 52min.
On the first day of January, sunrise is at 7:57 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:02 pm MST.

Sunshine

In January, the average sunshine is 5h.

UV index

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During January, 2 as the daily maximum UV index converts into the following advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in January?

An average high-temperature, in January, in Saint Marie, is 24.3°F (-4.3°C) and the average low-temperature is 10.9°F (-11.7°C).

What is the most humid month?

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

What is the average humidity in January?

In Saint Marie, the average relative humidity in January is 86%.

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 January?

In January, the rain falls for 2.5 days. Throughout January, 0.35" (9mm) of precipitation is accumulated.

How many days does it snow in January?

In January, it is snowing for 7.9 days. Throughout January, 1.93" (49mm) of snow is accumulated.

What is the average length of the day in January?

The average day length in January is 8h and 52min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:57 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:02 pm MST.

How long on average sun shines in January?

In January, the average sunshine duration is 5h.

What is the UV index intensity in January?

In Saint Marie, 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 the Sun's 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
Saint Marie, MT

Average temperature in January - Saint Marie, MT
  • Average high temperature in January: 24.3°F

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).

  • Average low temperature in January: 10.9°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 in January
Saint Marie, MT

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

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 in January
Saint Marie, MT

Average wind speed in January - Saint Marie, MT
  • Average wind speed in January: 9.8mph

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 in January
Saint Marie, MT

Average humidity in January - Saint Marie, MT
  • Average humidity in January: 86%

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

Average rainfall in January
Saint Marie, MT

Average rainfall in January - Saint Marie, MT
  • Average rainfall in January: 0.35"

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 in January
Saint Marie, MT

Average rainfall days in January - Saint Marie, MT
  • Average rainfall days in January: 2.5 days

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 in January
Saint Marie, MT

Average snowfall in January - Saint Marie, MT
  • Average snowfall in January: 1.93"

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 in January
Saint Marie, MT

Average snowfall days in January - Saint Marie, MT
  • Average snowfall days in January: 7.9 days

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 in January /
Average sunshine in January
Saint Marie, MT

Average daylight in January / Average sunshine in January - Saint Marie, MT
  • Average daylight in January: 8h and 5min

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).

  • Average sunshine in January: 5h and 0min

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 in January
Saint Marie, MT

Average sunshine days in January - Saint Marie, MT
  • Average sunshine days in January: 21.1 days

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 UV index in January
Saint Marie, MT

Average UV index in January - Saint Marie, MT
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in January
Saint Marie, MT

Average cloud cover in January - Saint Marie, MT
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 16).

Average visibility in January
Saint Marie, MT

Average visibility in January - Saint Marie, 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).

Saint Marie, Montana, USA

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