January weather forecast
Sidney, MT

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Weather in January

This is a month where one should brace for a chilly period in Sidney, Montana. Sufficient heating and warm clothing become necessities as the cold weather persists. The mercury readings do not rise beyond 23.4°F (-4.8°C) in January, making it one of the coldest months of the year. The weather calls for some indoor activities and hot beverages to keep warm. The quiet streets give Sidney a peaceful demeanor during the day and night.

Temperature

Temperature readings reach their annual highs in January, averaging 23.4°F (-4.8°C) and a minimum average of 9.9°F (-12.3°C).

Humidity

With an average relative humidity of 87%, January is the most humid month.

Rainfall

January is the month with the least rainfall. Rain falls for 3.2 days and accumulates 0.24" (6mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In January, in Sidney, it is snowing for 10.6 days. Throughout January, 1.3" (33mm) of snow is accumulated. In Sidney, during the entire year, snow falls for 56.1 days and aggregates up to 8.94" (227mm) of snow.

Daylight

The average length of the day in January is 8h and 56min.
On the first day of January in Sidney, sunrise is at 7:45 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm MST.

Sunshine

The average sunshine in January in Sidney is 4.6h.

UV index

January and February, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 1 during January, leads to the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What part of the year is the coldest in Sidney?

In Sidney, January is the coldest month, with temperatures averaging a high of 23.4°F (-4.8°C) and a low of 9.9°F (-12.3°C).

How cold is January in Sidney?

In January, the average high-temperature and low-temperature in Sidney, Montana, are 23.4°F (-4.8°C) and 9.9°F (-12.3°C) respectively.

What is the most humid month in Sidney?

With an average relative humidity of 87%, January is the most humid month in Sidney.

What is the average humidity in January in Sidney?

The average relative humidity in January in Sidney is 87%.

What is the driest month in Sidney?

January is the month with the least rainfall. Rain falls for 3.2 days and accumulates 0.24" (6mm) of precipitation.

How much does it rain in Sidney in January?

In Sidney, during January, the rain falls for 3.2 days and regularly aggregates up to 0.24" (6mm) of precipitation.

How much does it snow in Sidney in January?

In Sidney, in January, during 10.6 snowfall days, 1.3" (33mm) of snow is typically accumulated.

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

In Sidney, Montana, the average day length in January is 8h and 56min.

When is the sunrise / sunset in January in Sidney?

In January, on the first day of the month, sunrise is at 7:45 am and sunset at 4:15 pm. On the last day of the month, in Sidney, sunrise is at 7:24 am and sunset at 4:55 pm MST.

How long on average sun shines in January in Sidney?

In Sidney, Montana, the average sunshine duration in January is 4.6h.

When is the lowest UV index in Sidney?

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

What is the UV index reading in January in Sidney?

In Sidney, Montana, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from 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
Sidney, MT

Average temperature in January - Sidney, MT
  • Average high temperature in January: 23.4°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in January: 9.9°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in January
Sidney, MT

Average pressure in January - Sidney, MT
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in January
Sidney, MT

Average wind speed in January - Sidney, MT
  • Average wind speed in January: 10.4mph

The windiest months (with the highest average wind speed) are April and October (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).

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Average humidity in January
Sidney, MT

Average humidity in January - Sidney, MT
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (45%).

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Average rainfall in January
Sidney, MT

Average rainfall in January - Sidney, MT
  • Average rainfall in January: 0.24"

The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in January
Sidney, MT

Average rainfall days in January - Sidney, MT
  • Average rainfall days in January: 3.2 days

The month with the highest number of rainy days is June (11.4 days).
The months with the least rainy days are January and February (3.2 days).

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Average snowfall in January
Sidney, MT

Average snowfall in January - Sidney, MT
  • Average snowfall in January: 1.3"

The month with the highest snowfall is February (1.77").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Sidney, MT

Average snowfall days in January - Sidney, MT
  • Average snowfall days in January: 10.6 days

The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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: 4h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in January
Sidney, MT

Average sunshine days in January - Sidney, MT
  • Average sunshine days in January: 19.3 days

The month with the most sunshine days is September (20.7 days).
The month with the least sunshine days is April (15.8 days).

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Average UV index in January
Sidney, MT

Average UV index in January - Sidney, MT
  • Average UV index in January: 1

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and February (UV index 1).

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Average cloud cover in January
Sidney, MT

Average cloud cover in January - Sidney, MT
  • Average cloud cover in January: 51

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 18).

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Average visibility in January
Sidney, MT

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

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