The climate in Saint Louis during June can be summarized as hot and a little damp.
June is in the summer in Saint Louis 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 | 29.6°C 85.2°F |
|---|---|
| Nightly temperature | 18.1°C 64.5°F |
| Average temperature | 23.8°C 74.8°F |
| Daily sunshine | 10.5 hrs |
| Avg rainfall | 95 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 4th wettest month of the year in Saint Louis with around 95mm 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.
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 Louis in June 2025.
| Hottest month: | July | 31.4°C 88.5°F |
|---|---|---|
| Driest month: | January | 46mm 1.8ins |
| Sunniest month: | July | 10.8hrs |
| Coldest month: | January | 3.1°C 37.6°F |
| Wettest month: | May | 103mm 4.1ins |