Wyoming, USA
Long term weather forecast
Long term weather forecast

May weather forecast and Climate
Cheyenne, WY

  • Average high temperature in May: 18.2°C

Warmest month (with highest average high temperature) is July (28.6°C).
Month with lowest average high temperature is December (3.4°C).

  • Average low temperature in May: 4.6°C

Month with highest average low temperature is July (13.1°C).
Coldest month (with lowest average low temperature) is December (-8.2°C).

  • Average humidity in May: 55.8%

Month with highest relative humidity is March (56.1%).
Month with lowest relative humidity is October (50%).

  • Average rainfall in May: 59.4mm

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

  • Average rainfall days in May: 12.4 days

Month with highest number of rainy days is May (12.4 days).
Month with lowest number of rainy days is January (4.9 days).

  • Average snowfall in May: 58.4mm

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

  • Average snowfall days in May: 1.8 days

Month with highest number of snowfall days is March (7.8 days).
Months with lowest number of snowfall days are July and August (0 days).

  • Average daylight in May: 15h

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

  • Average sunshine in May: 9.4h

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

  • Average UV index in May: 9

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