The highest day temperature in May 2026 was 94°F. The lowest night temperature was 38°F. The average values for day and night temperatures during May were 75.4°F и 55.2°F respectivly.

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

Precipitation total in May for Champaign is 1.3 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 9.5 mph.

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 Champaign in May is 7.8 hours.