Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
West Yellowstone's May weather brings a rise in high-temperatures, moving from an icy 37.2°F (2.9°C) in April to a chilly 49.8°F (9.9°C). West Yellowstone records a mean low-temperature of 28.9°F (-1.7°C) in May.Humidity
In May, the average relative humidity is 76%.Rainfall
May is the month with the most rainfall in West Yellowstone. Rain falls for 17.4 days and accumulates 2.8" (71mm) of precipitation.Snowfall
Months with snowfall in West Yellowstone are January through July, September through December. In May, in West Yellowstone, it is snowing for 10.3 days. Throughout May, 8.23" (209mm) of snow is accumulated. Throughout the year, there are 159.3 snowfall days, and 120.47" (3060mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 50min.On the first day of May, sunrise is at 6:13 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 9:02 pm MDT.
Sunshine
In May, the average sunshine is 9.6h.UV index
The average daily maximum UV index in May in West Yellowstone is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in May interprets into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in West Yellowstone?
What is the average humidity in May in West Yellowstone?
What is the wettest month in West Yellowstone?
How many days does it rain in May in West Yellowstone?
How many days does it snow in May in West Yellowstone?
How many hours of daylight does West Yellowstone have in May?
What time are sunrise and sunset in May in West Yellowstone?
How many hours of sunshine does West Yellowstone have in May?
What is the UV index reading in May in West Yellowstone?
Average temperature in May
West Yellowstone, MT
- Average high temperature in May: 49.8°F
The warmest month (with the highest average high temperature) is July (72.9°F).
The month with the lowest average high temperature is December (20.1°F).
- Average low temperature in May: 28.9°F
The month with the highest average low temperature is August (43.7°F).
The coldest month (with the lowest average low temperature) is December (4.8°F).
Average pressure in May
West Yellowstone, MT
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
West Yellowstone, MT
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is June (6.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in May
West Yellowstone, MT
- Average humidity in May: 76%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is August (50%).
Average rainfall in May
West Yellowstone, MT
- Average rainfall in May: 2.8"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in May
West Yellowstone, MT
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (2.2 days).
Average snowfall in May
West Yellowstone, MT
- Average snowfall in May: 8.23"
The month with the highest snowfall is February (17.83").
The month with the least snowfall is August (0").
Average snowfall days in May
West Yellowstone, MT
- Average snowfall days in May: 10.3 days
The month with the highest number of snowfall days is March (24.4 days).
The months with the least snowfall days are July and August (0.2 days).
Average daylight in May /
Average sunshine in May
West Yellowstone, MT
- Average daylight in May: 14h and 5min
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: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 18min).
Average sunshine days in May
West Yellowstone, MT
- Average sunshine days in May: 5.5 days
The months with the most sunshine days are July and September (14.7 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in May
West Yellowstone, MT
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in May
West Yellowstone, MT
- Average cloud cover in May: 39
The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in May
West Yellowstone, MT
- Average visibility in May: 5mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
West Yellowstone, Montana, USA
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