Cheyenne
Wyoming, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Cheyenne, WY

A sunny day in the front of the State Capitol building in Cheyenne, Wyoming
A sunny day in the front of the State Capitol building in Cheyenne, Wyoming
January, like December, in Cheyenne, Wyoming, is another cold winter month, with temperature in the range of an average low of 22.3°F (-5.4°C) and an average high of 36.9°F (2.7°C).

Temperature

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

Humidity

In January, the average relative humidity in Cheyenne is 61%.

Rainfall

The month with the least rainfall 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 January, snow falls for 8.9 days and regularly aggregates up to 2.28" (58mm) of snow. In Cheyenne, 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 is 9.6h.

Sunshine

In January, the average sunshine is 6.8h.

UV index

Months with the lowest UV index in Cheyenne are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the average person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

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 is 61%.

How many days does it rain in January in Cheyenne?

In Cheyenne, in January, it is raining for 4.7 days, with typically 0.43" (11mm) of accumulated precipitation.

What is the driest month in Cheyenne?

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

How many days does it snow in January in Cheyenne?

In January, in Cheyenne, Wyoming, it is snowing for 8.9 days. Throughout January, 2.28" (58mm) of snow is accumulated.

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

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

How many hours of sunshine does Cheyenne have in January?

In January, the average sunshine in Cheyenne is 6.8h.

What is the month with the lowest UV index in Cheyenne?

Months with the lowest UV index in Cheyenne, Wyoming, are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Cheyenne?

In Cheyenne, Wyoming, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in January - Cheyenne, WY
  • Average high temperature in January: 2.7°C

The warmest month (with the highest average high temperature) is July (28°C).
The month with the lowest average high temperature is December (1.5°C).

  • Average low temperature in January: -5.4°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is December (-6.5°C).

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%).

Average rainfall in January - Cheyenne, WY
  • Average rainfall in January: 11mm

The wettest month (with the highest rainfall) is May (75mm).
The driest month (with the lowest rainfall) is January (11mm).

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 lowest number of rainy days is January (4.7 days).

Average snowfall in January - Cheyenne, WY
  • Average snowfall in January: 58mm

The month with the highest snowfall is March (154mm).
Months with the lowest snowfall are June, July, August and September (0mm).

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 lowest number of snowfall days are June, July and August (0 days).

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 shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 6.8h

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

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).