West Yellowstone weather in May
Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: June – September
What is the weather like in West Yellowstone in May?
In May, West Yellowstone is cool: daytime highs average 11 °C, and nights often drop below freezing (−1 °C). The sun shines for around 8 hours a day. Rain is frequent, with about 13 rainy days and 71 mm in total. Snow falls on about 5 days. All in all, May is a so-so month for a holiday in West Yellowstone.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 47 min05:57 – 20:44
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 59 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 5 days1 cm or more of fresh snowAll months
- Time zone
- UTC−6America/Denver
How the score comes together
- Temperatureweight 50 %33 %
- Sunshineweight 20 %77 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Hat, scarf & gloves
- Rain jacket or umbrella
West Yellowstone in May: quick answers
Is West Yellowstone hot in May?
No. In May, West Yellowstone is cool: daytime highs average 11 °C and nights drop to about −1 °C.
Does it rain much in West Yellowstone in May?
Rain is frequent, with about 13 rainy days and 71 mm in total.
West Yellowstone month by month
The whole year in West YellowstoneAll destinations: USAWhere to go in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences