The highest day temperature in April 2026 was 91°F. The lowest night temperature was 39°F. The average values for day and night temperatures during April were 73.3°F и 57.7°F respectivly.

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

Precipitation total in April for Saint Charles is 1.3 in.

The average wind speed in April is 9.8 mph. It makes April one of the most windy months of the year for Saint Charles.

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 Saint Charles in April is 7.2 hours.