May weather forecastSundance, WY
May
Weather in May
May brings with it a taste of summer amidst spring's full bloom in Sundance. Consuming 14.8 hours of the day, daylight illuminates the scenery, highlighting the lush landscapes birthed from April's sustained rainfall, which peaks at 2.56" (65mm). With temperatures gradually ascending, Sundance residents look forward to the upcoming summer season. Increased rainfall combined with warmer temperatures result in a noticeable rise in humidity. By the time June arrives, the anticipation for summer is palpable, and the weather does not lag behind.Temperature
With the onset of May in Sundance, the average high-temperature slightly shifts from April's chilly 47.1°F (8.4°C) to a mild 58.1°F (14.5°C). In Sundance, an average low-temperature of 39.6°F (4.2°C) is recorded during May nights.Humidity
In Sundance, the average relative humidity in May is 69%.Rainfall
In May, the rain falls for 17.1 days. Throughout May, 2.56" (65mm) of precipitation is accumulated. Throughout the year, in Sundance, there are 123.2 rainfall days, and 19.37" (492mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Sundance. In Sundance, in May, snow falls for 4 days, with typically accumulated 3.86" (98mm) of snow. In Sundance, during the entire year, snow falls for 80.3 days and aggregates up to 41.73" (1060mm) of snow.Daylight
The average length of the day in May in Sundance, Wyoming, is 14h and 49min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:34 pm MDT.
Sunshine
The average sunshine in May is 10.1h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sundance, WY
- Average high temperature in May: 58.1°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in May: 39.6°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).
Average pressure in May
Sundance, WY
- Average pressure in May: 29.91"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Sundance, WY
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in May
Sundance, WY
- Average humidity in May: 69%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (53%).
Average rainfall in May
Sundance, WY
- Average rainfall in May: 2.56"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in May
Sundance, WY
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in May
Sundance, WY
- Average snowfall in May: 3.86"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Sundance, WY
- Average snowfall days in May: 4 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Sundance, WY
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 10h and 6min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in May
Sundance, WY
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in May
Sundance, WY
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in May
Sundance, WY
- Average cloud cover in May: 35
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in May
Sundance, WY
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).





