19°
Light showers, feels like 18°.
O'Fallon, Missouri, United States · Tuesday, 3 November 2026 20:30 local time
Next 24 Hours
O'Fallon Hourly Weather
| Time | Temperature / Feels like | Weather / Chance of rain |
|---|---|---|
| 19 ° / 19 ° |
100 %
Overcast |
|
| 19 ° / 18 ° |
94 %
Light showers |
|
| 18 ° / 18 ° |
75 %
Overcast |
|
| 17 ° / 16 ° |
50 %
Overcast |
|
| 16 ° / 15 ° |
29 %
Partly cloudy |
|
| 15 ° / 14 ° |
16 %
Overcast |
|
| 14 ° / 12 ° |
6 %
Overcast |
|
| 14 ° / 11 ° |
0 %
Overcast |
|
| 15 ° / 13 ° |
0 %
Overcast |
|
| 14 ° / 13 ° |
0 %
Overcast |
|
| 13 ° / 11 ° |
0 %
Overcast |
|
| 13 ° / 11 ° |
0 %
Overcast |
O'Fallon 7-Day Forecast
| Date | Low/High | Weather | Chance of rain | Wind | Summary |
|---|---|---|---|---|---|
| 17 °/21 ° |
Showers
|
100% | 29 km/h | Today WeatherLow/High17°/21° Humidity86% Pressure990 hPa Sunrise/Sunset |
|
| 10 °/16 ° |
Overcast
|
29% | 22 km/h | Wed 4 Nov WeatherLow/High10°/16° Humidity83% Pressure990 hPa Sunrise/Sunset |
|
| 7 °/17 ° |
Overcast
|
10% | 27 km/h | Thu 5 Nov WeatherLow/High7°/17° Humidity72% Pressure994 hPa Sunrise/Sunset |
|
| 4 °/14 ° |
Light rain
|
14% | 23 km/h | Fri 6 Nov WeatherLow/High4°/14° Humidity67% Pressure1000 hPa Sunrise/Sunset |
|
| 2 °/12 ° |
Overcast
|
0% | 12 km/h | Sat 7 Nov WeatherLow/High2°/12° Humidity57% Pressure1004 hPa Sunrise/Sunset |
|
| 2 °/15 ° |
Overcast
|
0% | 9 km/h | Sun 8 Nov WeatherLow/High2°/15° Humidity48% Pressure1005 hPa Sunrise/Sunset |
|
| 4 °/18 ° |
Fog
|
0% | 14 km/h | Mon 9 Nov WeatherLow/High4°/18° Humidity42% Pressure1003 hPa Sunrise/Sunset |
O'Fallon Weather Summary
O'Fallon, Tuesday 3 November 2026: light showers, 19°C (feels like 18°C), with a range of 17–21°C today. The highest chance of rain in the next 24 hours is 100%, around 20:00 local time. Tomorrow: overcast, 10–16°C — see weather tomorrow or the hourly forecast.
Tip: take an umbrella or a rain jacket.
Updated at 20:33 local time, 3 November 2026
O'Fallon Hourly Temperature and Chance of Rain
O'Fallon Temperature and Chance of Rain, Next Days
About O'Fallon
O'Fallon is a city in Missouri, the United States. The forecast uses the local point at 38.81°N, 90.70°W, about 164 m above sea level. Local time is UTC−6 (America/Chicago). Data combine the ECMWF, ICON and GFS weather models and refresh every 15 minutes; for official warnings, follow the national weather service.
O'Fallon Air Quality
Good · AQI 32Air quality is good and poses little or no risk for outdoor activity.
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