10-Day Weather Forecast for O'Fallon (MO)
Six-hourly outlook through Sunday 26 July. Updated every three hours via MET Norway.
What's the weather in O'Fallon this week?
Today's weather - Thursday 16 Jul
This evening, the weather in O'Fallon will be mostly clear with some rain, with temperatures around 28°C (82°F), dropping to 24°C (75°F) overnight.
Tomorrow's weather - Friday 17 Jul
The forecast for O'Fallon on Friday is mostly sunny with some rain. Expect highs of a very warm 32°C (90°F) and lows of around 24°C (75°F).
10-Day Weather Forecast
During the next 10 days, temperatures will reach 37°C (99°F) on Tuesday before declining again, 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 plenty of sunshine. Rainfall is expected to be much less than usual (compared to typical July conditions). The forecast shows mostly dry conditions. Precipitation is expected on roughly 2 days (Sun, 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 Thursday with a low of 19°C (66°F).
Will it rain next week in O'Fallon?
Yes, rain is expected on 2 days , specifically on Sun, Tue.
How much rainfall is expected next week?
A total of 4 mm (0.2 in) of rain is forecasted for the 10-day period.
What will be the temperature range next week?
Temperatures will range from 19°C (66°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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