Saint Charles Weather in June
What's the weather like in Saint Charles (Missouri) in June 2025?
The climate in Saint Charles during June can be summarized as hot and a little damp.
June is in the summer in Saint Charles and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (85°F), whilst at night 18°C (65°F) is normal.
| Daytime temperature | 29.5°C 85.1°F |
|---|---|
| Nightly temperature | 18.3°C 64.9°F |
| Average temperature | 23.9°C 75°F |
| Daily sunshine | 10.5 hrs |
| Avg rainfall | 94 mm 3.7 ins |
| Rainy days | 9 days |
| Sea temperature | 16.6°C 61.9°F |
| Humidity | 67% |
| Windspeed | 15.5kph 10 mph |
On average June is the 3rd wettest month of the year in Saint Charles with around 94mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.5 hours of sunshine per day.
June temperatures in Saint Charles
June rainfall
June hourly sunshine
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 June 2025.
Other monthly averages
Saint Charles weather stats
| Hottest month: | July | 31.5°C 88.7°F |
|---|---|---|
| Driest month: | January | 44mm 1.7ins |
| Sunniest month: | July | 10.7hrs |
| Coldest month: | January | 3°C 37.4°F |
| Wettest month: | May | 104mm 4.1ins |
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