Saint Charles Weather in May

What's the weather like in Saint Charles (Illinois) in May 2024?

The climate in Saint Charles during May can be summarized as mild and a little damp.

May is in the spring in Saint Charles and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 9°C (47°F) is normal.

Saint Charles weather averages (imperial / metric)
Daytime temperature 21.6°C 70.8°F
Nightly temperature 8.5°C 47.2°F
Average temperature 15°C 59°F
Daily sunshine 9.6 hrs
Avg rainfall 90 mm 3.5 ins
Rainy days 11 days
Sea temperature 8.1°C 46.6°F
Humidity 65%
Windspeed 18kph 11 mph

On average May is the 6th wettest month of the year in Saint Charles with around 90mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.6 hours of sunshine per day.

May temperatures in Saint Charles

Saint Charles average temperature in May

May rainfall

Saint Charles average rain in May

May hourly sunshine

Saint Charles average rain in May

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Saint Charles in May 2024.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Saint Charles weather stats

Saint Charles weather statistics
Hottest month: July 28.5°C 83.3°F
Driest month: February 35mm 1.4ins
Sunniest month: July 10.9hrs
Coldest month: January -2.3°C 27.9°F
Wettest month: June 106mm 4.2ins
Map showing location of Saint Charles (41.91419, -88.30869) Saint Charles map pin © Google

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