Hotels in O'Fallon

Free cancellation options if plans change

Earn rewards on every night you stay

Save more with Member Prices

Check prices for these dates

Where to stay in O'Fallon?

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.

Check out pet-friendly hotels in O'Fallon

You may also like hotels with pools in O'Fallon

You can also stay at family-friendly hotels in O'Fallon

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.

When is the best time to visit O'Fallon?

Our prices for hotels in O'Fallon are cheapest in January
Price trends for hotels in O'Fallon
Pricing is based on two traveler single night rates
View properties in December
Currently viewing crowd sizes and weather for December.
Typical weather for O'Fallon
December
Low crowds
High 7°C / low 0°C. Partly sunny.
View properties in December
weather_partly_sunny
December, Low crowds, average high temperature 7 degrees Celsius, average low temperature 0 degrees Celsius. Partly sunny.
weather_cloudy
January, Low crowds, average high temperature 4 degrees Celsius, average low temperature -4 degrees Celsius. Cloudy most days.
-4°
weather_partly_sunny
February, Low crowds, average high temperature 6 degrees Celsius, average low temperature -3 degrees Celsius. Partly sunny.
-3°
13°
weather_partly_sunny
March, Moderate crowds, average high temperature 13 degrees Celsius, average low temperature 3 degrees Celsius. Partly sunny.
18°
weather_sun
April, High crowds, average high temperature 18 degrees Celsius, average low temperature 8 degrees Celsius. Sunny most days.
24°
weather_sun
May, High crowds, average high temperature 24 degrees Celsius, average low temperature 14 degrees Celsius. Sunny most days.
14°
29°
weather_sun
June, High crowds, average high temperature 29 degrees Celsius, average low temperature 19 degrees Celsius. Sunny most days.
19°
31°
weather_sun
July, Moderate crowds, average high temperature 31 degrees Celsius, average low temperature 21 degrees Celsius. Sunny most days.
21°
30°
weather_sun
August, Low crowds, average high temperature 30 degrees Celsius, average low temperature 20 degrees Celsius. Sunny most days.
20°
27°
weather_sun
September, Moderate crowds, average high temperature 27 degrees Celsius, average low temperature 16 degrees Celsius. Sunny most days.
16°
20°
weather_sun
October, High crowds, average high temperature 20 degrees Celsius, average low temperature 10 degrees Celsius. Sunny most days.
10°
13°
weather_partly_sunny
November, Moderate crowds, average high temperature 13 degrees Celsius, average low temperature 4 degrees Celsius. Partly sunny.
Monthly weather averages (˚C)

Top landmarks in O'Fallon

Learn more about O'Fallon

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.

Stone canal lock and waterfall beside gazebo in peaceful town park

Check out reviews of O'Fallon hotels guests love

Frequently asked questions

What hotels do travelers recommend in O'Fallon?
Can I book refundable hotels in O'Fallon?
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 Key™, our rewards program, you will be able to earn and use OneKeyCash™* on all eligible bookings such as hotels, car rentals, flights, vacation rentals and more on Hotels.com, Expedia and Vrbo.

Keep exploring