May 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 May

The last month of the spring, May, is an enjoyable month in Cheyenne, Wyoming, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 42.3°F (5.7°C).

Temperature

In May, the average high-temperature marginally rises, from a cool 53.8°F (12.1°C) in April, to an enjoyable 62.4°F (16.9°C). In Cheyenne, the average low-temperature is 42.3°F (5.7°C).

Humidity

In May, the average relative humidity in Cheyenne is 57%.

Rainfall

The month with the most rainfall in Cheyenne is May when the rain falls for 17.5 days and typically aggregates up to 2.95" (75mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 3.2 snowfall days, in May, Cheyenne aggregates 3.43" (87mm) of snow. Throughout the year, in Cheyenne, there are 62 snowfall days, and 30.51" (775mm) of snow is accumulated.

Daylight

In May, the average length of the day in Cheyenne is 14.5h.

Sunshine

In May, the average sunshine in Cheyenne is 10.4h.

UV index

In Cheyenne, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the temperature in May in Cheyenne?

In Cheyenne, in May, the average high-temperature is 62.4°F (16.9°C), and the average low-temperature is 42.3°F (5.7°C).

What is the average humidity in May in Cheyenne?

The average relative humidity in May is 57%.

How much does it rain in Cheyenne in May?

In May, in Cheyenne, Wyoming, the rain falls for 17.5 days. Throughout May, 2.95" (75mm) of precipitation is accumulated.

What is the wettest month in Cheyenne?

May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 2.95" (75mm) of precipitation.

What is the last month it snows in Cheyenne?

May is the last month it regularly snows in Cheyenne. During 3.2 snowfall days, in May, Cheyenne aggregates 3.43" (87mm) of snow.

How many hours of daylight does Cheyenne have in May?

In May, the average length of the day in Cheyenne, Wyoming, is 14.5h.

How long on average sun shines in May in Cheyenne?

The average sunshine in May in Cheyenne is 10.4h.

What is the UV index reading in May in Cheyenne?

In Cheyenne, Wyoming, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in May
Cheyenne, WY

Average temperature in May - Cheyenne, WY
  • Average high temperature in May: 62.4°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 May: 42.3°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 May
Cheyenne, WY

Average pressure in May - Cheyenne, WY
  • Average pressure in May: 29.9"

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 May
Cheyenne, WY

Average wind speed in May - Cheyenne, WY
  • Average wind speed in May: 10.4mph

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 May
Cheyenne, WY

Average humidity in May - Cheyenne, WY
  • Average humidity in May: 57%

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 May
Cheyenne, WY

Average rainfall in May - Cheyenne, WY
  • Average rainfall in May: 2.95"

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 May
Cheyenne, WY

Average rainfall days in May - Cheyenne, WY
  • Average rainfall days in May: 17.5 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 May
Cheyenne, WY

Average snowfall in May - Cheyenne, WY
  • Average snowfall in May: 3.43"

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 May
Cheyenne, WY

Average snowfall days in May - Cheyenne, WY
  • Average snowfall days in May: 3.2 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 May /
Average sunshine in May
Cheyenne, WY

Average daylight in May / Average sunshine in May - Cheyenne, WY
  • Average daylight in May: 14.5h

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 May: 10.4h

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 May
Cheyenne, WY

Average sunshine days in May - Cheyenne, WY
  • Average sunshine days in May: 9.9 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 May
Cheyenne, WY

Average UV index in May - Cheyenne, WY
  • Average UV index in May: 5

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 May
Cheyenne, WY

Average cloud cover in May - Cheyenne, WY
  • Average cloud cover in May: 32

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 May
Cheyenne, WY

Average visibility in May - Cheyenne, WY
  • Average visibility in May: 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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