January weather forecast and climate
Cheyenne, WY

A sunny day in front of the State Capitol building in Cheyenne, Wyoming
A sunny day in front of the State Capitol building in Cheyenne, Wyoming

Weather in January

January, like December, in Cheyenne, Wyoming, is another cold winter month, with average temperature fluctuating between 36.9°F (2.7°C) and 22.3°F (-5.4°C).

Temperature

In Cheyenne, the average high-temperature is relatively the same as in December - a still wintry 36.9°F (2.7°C). The average low-temperature, in Cheyenne, is 22.3°F (-5.4°C).

Humidity

In Cheyenne, the average relative humidity is 61%.

Rainfall

The month with the least rainfall in Cheyenne, Wyoming, is January when the rain falls for 4.7 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Cheyenne, Wyoming, during 8.9 snowfall days, 2.28" (58mm) of snow is typically accumulated. In Cheyenne, Wyoming, during the entire year, snow falls for 62 days, and aggregates up to 30.51" (775mm) of snow.

Daylight

In January, the average length of the day in Cheyenne is 9.6h.

Sunshine

In Cheyenne, the average sunshine is 6.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Cheyenne. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Cheyenne?

In January, in Cheyenne, the average high-temperature is 36.9°F (2.7°C), and the average low-temperature is 22.3°F (-5.4°C).

What is the average humidity in January in Cheyenne?

The average relative humidity in January in Cheyenne, Wyoming, is 61%.

How many days does it rain in January in Cheyenne?

In Cheyenne, during January, the rain falls for 4.7 days and regularly aggregates up to 0.43" (11mm) of precipitation.

What is the driest month in Cheyenne?

The month with the least rainfall is January when the rain falls for 4.7 days and typically collects 0.43" (11mm) of precipitation.

How much does it snow in Cheyenne in January?

In Cheyenne, in January, snow falls for 8.9 days, with typically accumulated 2.28" (58mm) of snow.

How many hours of daylight does Cheyenne have in January?

In Cheyenne, the average length of the day in January is 9.6h.

How many hours of sunshine does Cheyenne have in January?

In January, the average sunshine is 6.8h.

When is the lowest UV index in Cheyenne?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in January in Cheyenne?

In January, the average daily maximum UV index in Cheyenne is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in January
Cheyenne, WY

Average temperature in January - Cheyenne, WY
  • Average high temperature in January: 36.9°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in January: 22.3°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

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Average pressure in January
Cheyenne, WY

Average pressure in January - Cheyenne, WY
  • Average pressure in January: 30.14"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in January
Cheyenne, WY

Average wind speed in January - Cheyenne, WY
  • Average wind speed in January: 14.2mph

The windiest month (with the highest average wind speed) is January (14.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in January
Cheyenne, WY

Average humidity in January - Cheyenne, WY
  • Average humidity in January: 61%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (43%).

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Average rainfall in January
Cheyenne, WY

Average rainfall in January - Cheyenne, WY
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in January
Cheyenne, WY

Average rainfall days in January - Cheyenne, WY
  • Average rainfall days in January: 4.7 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.7 days).

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Average snowfall in January
Cheyenne, WY

Average snowfall in January - Cheyenne, WY
  • Average snowfall in January: 2.28"

The month with the highest snowfall is March (6.06").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Cheyenne, WY

Average snowfall days in January - Cheyenne, WY
  • Average snowfall days in January: 8.9 days

The month with the highest number of snowfall days is February (11.3 days).
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
Cheyenne, WY

Average daylight in January / Average sunshine in January - Cheyenne, WY
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 6.8h

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is February (Average sunshine: 6.5h).

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Average sunshine days in January
Cheyenne, WY

Average sunshine days in January - Cheyenne, WY
  • Average sunshine days in January: 20.7 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is April (9.3 days).

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Average UV index in January
Cheyenne, WY

Average UV index in January - Cheyenne, WY
  • Average UV index in January: 2

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Cheyenne, WY

Average cloud cover in January - Cheyenne, WY
  • Average cloud cover in January: 26

Months with the most cloud cover are April and May (Cloud cover 32).
The month with the least cloud cover is September (Cloud cover 18).

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Average visibility in January
Cheyenne, WY

Average visibility in January - Cheyenne, WY
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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