Hotels in O'Fallon

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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.
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Our prices for O'Fallon are cheapest in February

See average prices and weather for all months
Price trends for hotels in O'Fallon
Pricing is based on two traveler single night rates
View properties in September
Currently viewing crowd sizes and weather for September.
Weather forecast for O'Fallon
September
trending_flatModerate crowds
High 27°C / low 16°C. Sunny most days.
View properties in September
27°
weather_sun
September, Moderate crowds, average high temperature 27 degrees Celsius, average low temperature 16 degrees Celsius. Sunny most days.
16°
20°
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October, High crowds, average high temperature 20 degrees Celsius, average low temperature 10 degrees Celsius. Sunny most days.
10°
13°
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November, Moderate crowds, average high temperature 13 degrees Celsius, average low temperature 3 degrees Celsius. Partly sunny.
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December, Low crowds, average high temperature 7 degrees Celsius, average low temperature -1 degrees Celsius. Partly sunny.
-1°
weather_cloudy
January, Low crowds, average high temperature 4 degrees Celsius, average low temperature -4 degrees Celsius. Cloudy most days.
-4°
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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°
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April, Low crowds, average high temperature 18 degrees Celsius, average low temperature 8 degrees Celsius. Sunny most days.
24°
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May, Moderate crowds, average high temperature 24 degrees Celsius, average low temperature 14 degrees Celsius. Sunny most days.
14°
29°
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June, High crowds, average high temperature 29 degrees Celsius, average low temperature 19 degrees Celsius. Sunny most days.
19°
31°
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July, High crowds, average high temperature 31 degrees Celsius, average low temperature 21 degrees Celsius. Sunny most days.
21°
30°
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August, High crowds, average high temperature 30 degrees Celsius, average low temperature 20 degrees Celsius. Sunny most days.
20°
Monthly weather averages (˚C)

Top landmarks in O'Fallon

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Frequently asked questions

What hotels do travelers recommend in O'Fallon?
Can I book a refundable hotel in O'Fallon?
If you want the flexibility to change your plans to O'Fallon, most hotels offer refundable* bookable rates. You can find these properties by searching our site and using the "fully refundable" filter to narrow down the results.
Where can I stay in O'Fallon if I want a vacation rental instead of a hotel?
If you want to find a good alternative to a hotel, review our selection of 14 vacation homes. You also might want to book one of 5 condos for your trip.
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 37°F. May and April are the months with the most rain.
Why should I book my O'Fallon hotel through 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.

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