10-Day Weather Forecast for O'Fallon (IL)
Six-hourly outlook through Saturday 25 July. Updated every three hours via MET Norway.
What's the weather in O'Fallon this week?
Today's weather - Wednesday 15 Jul
This evening, the weather in O'Fallon will be clear skies, with temperatures around 28°C (82°F), dropping to 25°C (77°F) overnight.
Tomorrow's weather - Thursday 16 Jul
The forecast for O'Fallon on Thursday is heavy rain showers throughout the day. Expect highs of a very warm 32°C (90°F) and lows of around 25°C (77°F).
10-Day Weather Forecast
During the next 10 days, temperatures will get warmer, maximum temperatures reach 37°C (99°F) on Tuesday, with average highs of 32°C (90°F) and lows of 25°C (77°F). Compared to July norms, this represents typical weather. The following 10 days will bring some sunshine. Precipitation will be about normal, with some rainy days. Precipitation is expected on roughly 4 days (Thu, Fri, Sat, Tue). Wind conditions will be generally calm.
Weather Forecast FAQ for O'Fallon
When will be the warmest day next week?
The warmest day is expected to be Tuesday with a high of 37°C (99°F).
When will be the coldest day?
The coldest day is forecasted for Monday with a low of 23°C (73°F).
Will it rain next week in O'Fallon?
Yes, rain is expected on 4 days , specifically on Thu, Fri, Sat, Tue.
How much rainfall is expected next week?
A total of 28 mm (1.1 in) of rain is forecasted for the 10-day period.
What will be the temperature range next week?
Temperatures will range from 23°C (73°F) to 37°C (99°F).
More about O'Fallon
Explore the full O'Fallon climate overview with monthly averages, or check rainfall data and temperature by month.
O'Fallon weather by month
Browse monthly averages for O'Fallon: climate by month with temperature, rainfall and sunshine.
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