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United StatesThe weather in May in West Yellowstone
It's cool in May in West Yellowstone with an average temperature of 14°C. Temperatures this month range from a low of 9°C to a high of 19°C. At night, you can expect temperatures between -5°C and 3°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for West Yellowstone, Montana. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 26°C in 2020, West Yellowstone reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was -2°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -15°C to a highest value of 9°C.
Precipitation and snowfall
In May, there is an average of 49 mm of precipitation, spread over 8 days. Of the total precipitation, about 9,1 cm falls as snow in May. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in May for West Yellowstone
Click on any day in May to get detailed info about the usual weather on that day in West Yellowstone. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| West Yellowstone | New York | |
|---|---|---|
| Average temperature | 14°C | 22°C |
| Max. temperature | 19°C | 28°C |
| Min. temperature | -5°C | -5°C |
| Total precipitation | 49 mm | 105 mm |
| Rainy days | 8 days | 14 days |
| Total snowfall | 9,1 cm | 0 cm |
| Snowy days | 5 days | 0 days |
Start of May
The month of May starts in West Yellowstone with cool temps, averaging around 13°C during the day and nights around -2°C.
Mid May
By mid-May, daytime temps rise to around 14°C, with nights around 0°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in West Yellowstone is around 16°C, while nighttime temps are about 2°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
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Temperature charts
These charts show the average temperatures in May in West Yellowstone, Montana. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in West Yellowstone
Temperature in May in West Yellowstone over the years
Precipitation charts
These charts show the average amount of precipitation in May in West Yellowstone, Montana. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in West Yellowstone
Total precipitation in May in West Yellowstone over the years
Daily Snowfall in May in West Yellowstone
Snowfall in May in West Yellowstone per year
Daily UV index in May in West Yellowstone
This chart shows the average daily UV index in May in West Yellowstone, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in West Yellowstone
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Average weather in West Yellowstone by month
Click on a month below to see detailed weather info for West Yellowstone. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.