The highest day temperature in May 2023 was 78°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 65.4°F и 45.5°F respectivly.

Most of the days in May are cloudy but you can also expect sunny or gloomy days.

Precipitation total in May for Custer is 2.1 in. It makes may the most rainy month of the year.

The average wind speed in May is 7.4 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 Custer in May is 7.9 hours.