Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
July, no crowd data, average high temperature 31 degrees Celsius, average low temperature 21 degrees Celsius. Sunny most days.
21°
30°
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August, no crowd data, average high temperature 30 degrees Celsius, average low temperature 20 degrees Celsius. Sunny most days.
20°
27°
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September, no crowd data, average high temperature 27 degrees Celsius, average low temperature 16 degrees Celsius. Sunny most days.
16°
20°
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October, no crowd data, average high temperature 20 degrees Celsius, average low temperature 10 degrees Celsius. Sunny most days.
10°
13°
weather_partly_sunny
November, no crowd data, average high temperature 13 degrees Celsius, average low temperature 4 degrees Celsius. Partly sunny.
4°
7°
weather_partly_sunny
December, no crowd data, average high temperature 7 degrees Celsius, average low temperature 0 degrees Celsius. Partly sunny.
0°
4°
weather_cloudy
January, no crowd data, average high temperature 4 degrees Celsius, average low temperature -4 degrees Celsius. Cloudy most days.
-4°
6°
weather_partly_sunny
February, no crowd data, average high temperature 6 degrees Celsius, average low temperature -3 degrees Celsius. Partly sunny.
-3°
13°
weather_partly_sunny
March, no crowd data, average high temperature 13 degrees Celsius, average low temperature 3 degrees Celsius. Partly sunny.
3°
18°
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April, no crowd data, average high temperature 18 degrees Celsius, average low temperature 8 degrees Celsius. Sunny most days.
8°
24°
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May, no crowd data, average high temperature 24 degrees Celsius, average low temperature 14 degrees Celsius. Sunny most days.
14°
29°
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June, no crowd data, average high temperature 29 degrees Celsius, average low temperature 19 degrees Celsius. Sunny most days.
19°
Monthly weather averages (ËšC)
Top landmarks in O'Fallon
O'Fallon Family Sports Park
8.6/10 (137 reviews)
O'Fallon Family Sports Park is 1.3 mi (2 km) from central O'Fallon, why not stop by during your stay. Want to stretch your legs some more? Head to Pleasant Ridge Park and Shiloh Dog Park, both nearby.
Rock Springs Park beckons with its splash pad and winding trails, perfect for families seeking outdoor fun. The sprawling Family Sports Park offers fields for every athletic pursuit, while St. Clair Bowl provides air-conditioned entertainment when Midwestern humidity strikes. Military history buffs appreciate Scott Air Force Base's proximity, though base access requires planning. After working up an appetite, local restaurants serve hearty fare that keeps residents from driving to St. Louis. For quirky roadside attractions, the World's Largest Catsup Bottle stands tall in nearby Collinsville, demanding photographs that friends back home won't believe.
"This hotel was amazing, the rooms were very clean, the staff was very nice, the roof top view and restaurant was very dope, the beer cheese nachos were very good, parking was easy, most nights we parked right at the door."
"We liked that we could walk everywhere from the hotel. We were able to walk to the Gateway Arch and the river front. We also walked to Busch Stadium and the surrounding restaurants."
"Amenities were extra. We had to pay $14.95 when checking in.
Rooms still have fluorescent bulbs! If, like me, they induce migraines for you, you will be forced to spend the evening in the dark when night falls.
Hotel staff were incredible. Check in and out was very pleasant. Rooms were clean, and beds were comfy. Walls a little thin, but that's the only drawback.
We walked through the casino on our way to dinner. Smoking is still out in the open, so if that's a concern for you, just be aware before walking through there. I don't know if smoking is allowed in the rooms, but ours had not been smoked in. Smelled fine."
"A/C was not working the first day, but one mention to the staff and it was fixed by the time we returned to the room at the end of the day. Site was clean, staff friendly and helpful, and we loved the drinks and snacks!"
If you're looking for the flexibility to change your plans to O'Fallon, most hotels offer refundable* bookable rates. You can find these accommodations by searching our site and using the "fully refundable" filter to narrow the results down.
What will the weather in O'Fallon be like during my trip?
July and August are typically the warmest months in O'Fallon when the average temp is 75°F. January and February are the coldest months when the average temperature is 38°F. April and May are the months with the most rain.
Why should I book my O'Fallon hotel with Hotels.com?
There are lots of reasons to book your O'Fallon trip with us: our free cancellations on selected hotels gives you flexibility, and with One Keyâ„¢, our rewards program, you will be able to earn and use OneKeyCashâ„¢* on all eligible bookings such as hotels, car rentals, flights, vacation rentals and more on Hotels.com, Expedia and Vrbo.