O'Fallon (63366) Daily Weather Forecast

O'Fallon weather forecast for now and the week ahead — Rain and a thunderstorm from late tonight to tomorrow morning can lead to flooding. Noticeably cooler tomorrow.

Sunshine, hot; a p.m. t-storm

  • Sunrise 6:39 am | Sunset 7:21 pm
  • High: 94° | Low 72°
  • Chance of precipitation: 55%

  • Wind: 8 mph from the W

O'Fallon weather for the next 5 days:

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O'Fallon, MO weather at a glance

Q: What is the weather in O'Fallon?

A: Daily conditions in O'Fallon MO: Rain and a thunderstorm from late tonight to tomorrow morning can lead to flooding. Noticeably cooler tomorrow..

Q: What is the temperature in O'Fallon?

A: The temperature in O'Fallon MO is High: 94° | Low 72°

Q: What time is sunset in O'Fallon?

A: The sun will set in O'Fallon MO at 12:21 AM.

Q: What is the weather tomorrow in O'Fallon?

A: The weather tomorrow in O'Fallon MO: Heavy rain and a thunderstorm