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 in Cheyenne is the peak of winter and the coldest month of the year. The temperature drops to 15.8°F (-9°C) on the coldest days and rises to a warm 42.8°F (6°C) when the Chinooks arrive. This variation makes the weather feel warmer than registered, considering there are approximately only seven hours of sunshine per day.
Snowfall is regular with a 5.9" (149.9mm) of snow accumulation and an average of six snowfall days.
Most days are dry as there are only four and a half rainfall days. January records the lowest precipitation of the year averaging 0.4" (10.2mm).
Most activities remain indoors except for basking and for the lovers of the cold who can engage in skating. Dressing in warm winter clothing is advised all through.

What is the temperature in January in Cheyenne?

In January, in Cheyenne, Wyoming, the average high-temperature is 39.6°F (4.2°C), and the average low-temperature is 18°F (-7.8°C).

How many days does it rain in January in Cheyenne?

In Cheyenne, Wyoming, in January, during 4.9 rainfall days, typically 0.3" (8.4mm) of precipitation is accumulated.

How many days does it snow in January in Cheyenne?

In January, in Cheyenne, it is snowing for 5.7 days. Throughout January, 5.9" (149.9mm) of snow is accumulated.
Average temperature in January - Cheyenne, WY
  • Average high temperature in January: 4.2°C

The warmest month (with the highest average high temperature) is July (28.6°C).
The month with the lowest average high temperature is December (3.4°C).

  • Average low temperature in January: -7.8°C

The month with the highest average low temperature is July (13.1°C).
The coldest month (with the lowest average low temperature) is December (-8.2°C).

Average humidity in January - Cheyenne, WY
  • Average humidity in January: 52.5%

The month with the highest relative humidity is March (56.1%).
The month with the lowest relative humidity is October (50%).

Average rainfall in January - Cheyenne, WY
  • Average rainfall in January: 8.4mm

Wettest months (with the highest rainfall) are May and June (59.4mm).
The driest month (with the lowest rainfall) is January (8.4mm).

Average rainfall days in January - Cheyenne, WY
  • Average rainfall days in January: 4.9 days

The month with the highest number of rainy days is May (12.4 days).
The month with the lowest number of rainy days is January (4.9 days).

Average snowfall in January - Cheyenne, WY
  • Average snowfall in January: 149.9mm

The month with the highest snowfall is March (287mm).
Months with the lowest snowfall are June, July and August (0mm).

Average snowfall days in January - Cheyenne, WY
  • Average snowfall days in January: 5.7 days

The month with the highest number of snowfall days is March (7.8 days).
Months with the lowest number of snowfall days are 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: 6.2h

The month with most sunshine is July (Average sunshine: 10.2h).
The month with least sunshine is December (Average sunshine: 5.7h).

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

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 1).

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