January weather forecast
Simms, MT

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Weather in January

January, like December, is a freezing cold winter month in Simms, Montana, with an average temperature ranging between min 18.7°F (-7.4°C) and max 31.3°F (-0.4°C).

Temperature

January begins with an average high-temperature of a still subzero cold 31.3°F (-0.4°C), reflecting close similarity to the preceding month. Throughout the month of January, Simms witnesses an average low-temperature of 18.7°F (-7.4°C).

Humidity

The most humid month in Simms is January, with an average relative humidity of 78%.

Rainfall

January and July are months with the least rain in Simms when the rain falls for 4.8 days and typically aggregates up to 0.63" (16mm) of rain.

Snowfall

Months with snowfall in Simms are January through May, September through December. In Simms, in January, snow falls for 11.5 days, with typically accumulated 4.41" (112mm) of snow. Throughout the year, there are 69.4 snowfall days, and 35.35" (898mm) of snow is accumulated.

Daylight

The average length of the day in January in Simms is 8h and 58min.
On the first day of the month, sunrise is at 8:15 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:55 am and sunset at 5:26 pm MST.

Sunshine

The months with the least sunshine in Simms, Montana, are January and December, with an average of 5.4h of sunshine.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 in January translates into these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

How cold is it in Simms in January?

In Simms, in January, the average high-temperature is 31.3°F (-0.4°C), and the average low-temperature is 18.7°F (-7.4°C).

What is the most humid month in Simms?

With an average relative humidity of 78%, January is the most humid month.

What is the average humidity in January in Simms?

In Simms, Montana, the average relative humidity in January is 78%.

What is the driest month in Simms?

January and July are months with the least rain when the rain falls for 4.8 days and typically aggregates up to 0.63" (16mm) of rain.

How much does it rain in Simms in January?

In Simms, Montana, in January, it is raining for 4.8 days, with typically 0.63" (16mm) of accumulated precipitation.

How many days does it snow in January in Simms?

In January, it is snowing for 11.5 days. Throughout January, 4.41" (112mm) of snow is accumulated.

What is the average length of the day in January in Simms?

The average day length in January in Simms, Montana, is 8h and 58min.

When is the sunrise / sunset in January in Simms?

In January, on the first day of the month, sunrise is at 8:15 am and sunset at 4:47 pm. On the last day of the month, in Simms, Montana, sunrise is at 7:55 am and sunset at 5:26 pm MST.

What is the month with the least sunshine in Simms?

The months with the least sunshine are January and December, with an average of 5.4h of sunshine.

How many hours of sunshine does Simms have in January?

In Simms, Montana, the average sunshine duration in January is 5.4h.

When is the lowest UV index in Simms?

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

How high is the UV index in January in Simms?

In January, the average daily maximum UV index in Simms is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
29.5°F -1.4°C
31.3°F -0.4°C
31.3°F -0.4°C
Average low temperature
17.4°F -8.1°C
18.7°F -7.4°C
17.6°F -8°C
Average pressure
30.14" 766mmHg
30.14" 766mmHg
30.12" 765mmHg
Average wind speed
10.4mph 16.7km/h
10.7mph 17.2km/h
9.3mph 15km/h
Average max. wind speed
11.1mph 17.9km/h
11.4mph 18.3km/h
10mph 16.1km/h
Average wind speed gusts
19mph 30.6km/h
19.6mph 31.5km/h
16mph 25.7km/h
Average humidity
77%
78%
76%
Average rainfall
0.67" 17mm
0.63" 16mm
0.91" 23mm
Average rainfall days
4.9
4.8
6
Average snowfall
4.37" 111mm
4.41" 112mm
6.34" 161mm
Average snowfall days
12.4
11.5
14.4
Average daylight
8h 3min
9h 0min
10h 2min
Average sunshine
5h 2min
5h 2min
5h 3min
Average sunshine days
17.7
16.8
11.2
Average UV index
2
2
2
Average cloud cover
43%
42%
47%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Simms, MT

Average temperature in January - Simms, MT
  • Average high temperature in January: 31.3°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).

  • Average low temperature in January: 18.7°F

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).

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Average pressure in January
Simms, MT

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

The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in January
Simms, MT

Average wind speed in January - Simms, MT
  • Average wind speed in January: 10.7mph

The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

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Average humidity in January
Simms, MT

Average humidity in January - Simms, MT
  • Average humidity in January: 78%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in January
Simms, MT

Average rainfall in January - Simms, MT
  • Average rainfall in January: 0.63"

The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").

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Average rainfall days in January
Simms, MT

Average rainfall days in January - Simms, MT
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in January
Simms, MT

Average snowfall in January - Simms, MT
  • Average snowfall in January: 4.41"

The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Simms, MT

Average snowfall days in January - Simms, MT
  • Average snowfall days in January: 11.5 days

The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in January / Average sunshine in January - Simms, 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 2min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days in January
Simms, MT

Average sunshine days in January - Simms, MT
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).

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Average UV index in January
Simms, MT

Average UV index in January - Simms, 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).

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Average cloud cover in January
Simms, MT

Average cloud cover in January - Simms, MT
  • Average cloud cover in January: 42

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).

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Average visibility in January
Simms, MT

Average visibility in January - Simms, 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).

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Simms, Montana, USA

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