St. Charles Weather in April

April in St. Charles averages 20°C (68°F) during the day and 8°C (46°F) at night. It is the wettest month of the year, with 128 mm (5 in) of rainfall on average, so waterproof gear is a must.

Rainfall in St. Charles in April

An umbrella might come in handy since it is the wettest month of the year. Historically, April sees about 11 days of rain, with a monthly average of 128 mm (5 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in St. Charles in April

Daytime highs in St. Charles in April reach 20°C (68°F), with nights around 8°C (46°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in St. Charles in April

The month enjoys around 225 hours of sunshine, creating mostly sunny days with good weather conditions.

Should you favor a climate that's both dry and comfortably warm, September and October typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.