May weather forecastCheyenne, WY
May
Weather in May
May sees the weather transition significantly, bringing warmth and higher humidity index which translates into more colorful sceneries. This marked change in climate indicates that the colder days have passed. Sunlight persists for longer, contributing to the blooming flora eagerly basking under it. Despite a downward rainfall trend compared to April, residents experience an average of 2.95" (75mm) of rainfall. The city is ablaze with the pastel tones of spring, fostering brisk mornings and comfortable afternoons.Temperature
The start of May brings a subtle rise in the average high-temperature, moving from a cool 53.8°F (12.1°C) in April to a comfortable 62.4°F (16.9°C). An average minimum temperature of 42.3°F (5.7°C) is recorded during the month of May.Humidity
In May, the average relative humidity in Cheyenne is 57%.Rainfall
The month with the most rainfall 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, there are 62 snowfall days, and 30.51" (775mm) of snow is accumulated.Daylight
In Cheyenne, the average length of the day in May is 14h and 31min.On the first day of May, sunrise is at 5:55 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:25 pm MDT.
Sunshine
In May, the average sunshine is 10.4h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in May
Cheyenne, WY
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
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).
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%).
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").
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).
Average snowfall in May
Cheyenne, WY
- Average snowfall in May: 3.43"
The month with the highest snowfall is March (6.06").
The months with the least snowfall are June, July, August and September (0").
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).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Cheyenne, WY
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 10h and 24min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).
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).
Average UV index in May
Cheyenne, WY
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Cheyenne, WY
- Average cloud cover in May: 32
The 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).
Average visibility in May
Cheyenne, WY
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
