Saint Charles Weather in May

Saint Charles in May averages 22°C (72°F) during the day and 10°C (50°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Saint Charles in May

Climate statistics over the past 30 years suggest around 12 days of rain, with 111 mm (4.4 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Saint Charles in May

May in Saint Charles brings pleasant temperatures, with highs of 22°C (72°F) and nights around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 10°C (50°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 Saint Charles in May

The month enjoys around 282 hours of sunshine, creating mostly sunny days with good weather conditions.

Should you favor a climate that's both dry and comfortably warm, September typically offers 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.