Cheyenne
Wyoming, USA
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Cheyenne, WY

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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
Cheyenne is magnificent in May. The temperature rises considerably and falls in the range of 39.2°F (4°C) and 68°F (20°C).
Snowfall is rare and most days warm up with up to eleven hours of sunshine. There are up to fifteen hours of daylight in May, making the days last twice as long than the nights.
Spring is experienced fully with wild blossoms dotting Cheyenne, making it look like a massive flower garden. The scents fill the air making it fresh and crisp. This period sees most parks and gardens packed with tourists basking in the warm weather.
Rainfall only occurs during the afternoons for an average of twelve days, collecting an average of 2.4" (61mm). Appropriate dressing is required, as well as possessing a precautionary umbrella.
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  • The average high temperature in May: 18.2°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).

  • The average low temperature in May: 4.6°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).

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  • The average humidity in May: 55.8%

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

  • The average rainfall in May: 59.4mm

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

  • The average rainfall days in May: 12.4 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).

  • The average snowfall in May: 58.4mm

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

  • The average snowfall days in May: 1.8 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).

  • The average daylight in May: 15h

Months with the longest days are May, June and July (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9h).

  • The average sunshine in May: 9.4h

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

  • The average UV index in May: 9

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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