The highest day temperature in June 2025 was 106°F. The lowest night temperature was 64°F. The average values for day and night temperatures during June were 90.7°F и 74.9°F respectivly.

Most of the days in June are sunny but you can also expect cloudy and gloomy days.

Precipitation total in June for St. Louis is 3.3 in. It makes june one of the most rainy months of the year.

The average wind speed in June is 7.8 mph. It makes June one of the most windless months of the year for St. Louis.

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 St. Louis in June is 10.4 hours.