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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Saint Charles's climate page.
Saint Charles Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
22°C (72°F)
Chance of Rain
40%
Precipitation
111 mm (4.4 in)
Rainy days
12 days
Humidity
64% *
Sunshine
282 hours *
Percentage Sunshine
62% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Saint Charles in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Saint Charles in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Saint Charles's climate page.
Temperature Rainfall Sunshine Humidity
See the full Saint Charles climate overview or explore weather in the United States of America.
