January weather forecast
Simpson, MT

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Weather in January

January, the same as December, in Simpson, Montana, is another subzero cold winter month, with an average temperature fluctuating between 27.1°F (-2.7°C) and 14.4°F (-9.8°C).

Temperature

January and December are characterised by lowest temperatures, with an average high of 27.1°F (-2.7°C).

Humidity

January is the most humid month in Simpson, Montana, with an average relative humidity of 83%.

Rainfall

In January, in Simpson, Montana, the rain falls for 4.5 days. Throughout January, 0.43" (11mm) of precipitation is accumulated. Throughout the year, there are 98.7 rainfall days, and 8.23" (209mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Simpson are January through May, September through December. In Simpson, in January, snow falls for 10.4 days, with typically accumulated 2.6" (66mm) of snow. Throughout the year, in Simpson, there are 53.5 snowfall days, and 14.25" (362mm) of snow is accumulated.

Daylight

The average length of the day in January is 8h and 48min.
On the first day of the month, sunrise is at 8:14 am and sunset at 4:34 pm. On the last day of January, in Simpson, sunrise is at 7:52 am and sunset at 5:15 pm MST.

Sunshine

In January, the average sunshine in Simpson is 5.6h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What is the coldest time of year in Simpson?

Simpson sees its lowest temperatures during January and December, with an average high-temperature of 27.1°F (-2.7°C).

How cold is it in Simpson in January?

The average high-temperature and low-temperature in Simpson during January are 27.1°F (-2.7°C) and 14.4°F (-9.8°C) respectively.

What is the most humid month in Simpson?

With an average relative humidity of 83%, January is the most humid month.

What is the average humidity in January in Simpson?

The average relative humidity in January is 83%.

How many days does it rain in January in Simpson?

In Simpson, Montana, in January, during 4.5 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

How much does it snow in Simpson in January?

In January, in Simpson, Montana, it is snowing for 10.4 days. Throughout January, 2.6" (66mm) of snow is accumulated.

How many hours of daylight does Simpson have in January?

The average day length in January in Simpson, Montana, is 8h and 48min.

When is the sunrise / sunset in January in Simpson?

On the first day of January in Simpson, Montana, sunrise is at 8:14 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:15 pm MST.

How many hours of sunshine does Simpson have in January?

In January, the average sunshine duration is 5.6h.

When is the lowest UV index in Simpson?

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

How high is the UV index in January in Simpson?

In January, the average daily maximum UV index in Simpson, Montana, is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Simpson, MT

Average temperature in January - Simpson, MT
  • Average high temperature in January: 27.1°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).

  • Average low temperature in January: 14.4°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

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Average pressure in January
Simpson, MT

Average pressure in January - Simpson, MT
  • Average pressure in January: 30.12"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in January
Simpson, MT

Average wind speed in January - Simpson, MT
  • Average wind speed in January: 10.1mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in January
Simpson, MT

Average humidity in January - Simpson, MT
  • Average humidity in January: 83%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in January
Simpson, MT

Average rainfall in January - Simpson, MT
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").

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Average rainfall days in January
Simpson, MT

Average rainfall days in January - Simpson, MT
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).

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Average snowfall in January
Simpson, MT

Average snowfall in January - Simpson, MT
  • Average snowfall in January: 2.6"

The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Simpson, MT

Average snowfall days in January - Simpson, MT
  • Average snowfall days in January: 10.4 days

The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in January: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days in January
Simpson, MT

Average sunshine days in January - Simpson, MT
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in January
Simpson, MT

Average UV index in January - Simpson, 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
Simpson, MT

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

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).

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Average visibility in January
Simpson, MT

Average visibility in January - Simpson, 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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Simpson, Montana, USA

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