O'Fallon Weather in June
Thinking of visiting O'Fallon in June? Expect high temperatures reaching 30°C (86°F) during the day, dropping to 18°C (64°F) at night, and be prepared for the wettest month of the year.
Rainfall in O'Fallon in June
An umbrella might come in handy since it is the wettest month of the year. Expect around 12 days of rain based on historical data, with 119 mm (4.7 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in O'Fallon in June
Expect highs of 30°C (86°F) in O'Fallon in June, with nights dropping to around 18°C (64°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 18°C (64°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in O'Fallon in June
The city usually sees around 293 hours of sunlight, indicating many sunny days — a great month for sightseeing.Should you favor a climate that's both dry and comfortably warm, October 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 O'Fallon's climate page.
O'Fallon Temperature in June
Min Temperature
18°C (64°F)
Max Temperature
30°C (86°F)
Chance of Rain
40%
Precipitation
119 mm (4.7 in)
Rainy days
12 days
Humidity
67% *
Sunshine
293 hours *
Percentage Sunshine
66% *
Best Places in the United States of America in June
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 June →
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What to Wear in O'Fallon in June
Warm temperatures in June make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. 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 O'Fallon in June
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 O'Fallon's climate page.
Temperature Rainfall Sunshine Humidity
See the full O'Fallon climate overview or explore weather in the United States of America.
