The highest day temperature in May 2023 was 62°F. The lowest night temperature was 16°F. The average values for day and night temperatures during May were 50.5°F и 29.9°F respectivly.

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in May for Yellowstone is 4.6 in. It makes may the most rainy month of the year.

The average wind speed in May is 6.3 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Yellowstone in May is 8.1 hours.