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Weather forecast in O'Fallon, United States

O'Fallon, current weather: partly cloudy, no precipitation is expected for the next 2 hours. Air temperature +26°, feels like +24°. Wind speed 4.6 Meters per second, southerly. Pressure 746 millimeters of mercury. Humidity 50%. Daytime water temperature +22°. Sunrise 07:27, Sunset 18:05. This time yesterday +27°

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O'Fallon, United States: Hourly forecast.

  • 5 pm: +26°, overcast, Feels like +22°.

  • 6 pm: +25°, partly cloudy, Feels like +22°.

  • Sunset 30 October 06:05 pm

  • 7 pm: +24°, partly cloudy, Feels like +21°.

  • 8 pm: +24°, mostly clear, Feels like +22°.

  • 9 pm: +23°, mostly clear, Feels like +20°.

  • 10 pm: +23°, mostly clear, Feels like +21°.

  • 11 pm: +23°, mostly clear, Feels like +21°.

  • Thursday, 12 am: +23°, partly cloudy, Feels like +21°.

  • 1 am: +23°, overcast, Feels like +21°.

  • 2 am: +23°, overcast, Feels like +21°.

  • 3 am: +23°, overcast, Feels like +21°.

  • 4 am: +22°, thunderstorm, Feels like +20°.

  • 5 am: +21°, thunderstorm with rain, Feels like +19°. Probability of precipitation 40%

  • 6 am: +20°, thunderstorm with rain, Feels like +18°. Probability of precipitation 50%

  • 7 am: +20°, thunderstorm with rain, Feels like +19°. Probability of precipitation 70%

  • Sunrise 31 October 07:28 am

  • 8 am: +20°, heavy rain, Feels like +19°. Probability of precipitation 40%

  • 9 am: +19°, light rain, Feels like +18°. Probability of precipitation 40%

  • 10 am: +18°, light rain, Feels like +15°. Probability of precipitation 70%

  • 11 am: +17°, overcast, Feels like +13°.

  • 12 pm: +18°, overcast, Feels like +14°.

  • 1 pm: +18°, overcast, Feels like +14°.

  • 2 pm: +19°, overcast, Feels like +15°.

  • 3 pm: +19°, clear, Feels like +14°.

  • 4 pm: +18°, clear, Feels like +13°.

  • 5 pm: +17°, mostly clear, Feels like +13°.

  • 6 pm: +15°, mostly clear, Feels like +11°.

  • Sunset 31 October 06:04 pm

  • 7 pm: +13°, clear, Feels like +10°.

  • 8 pm: +12°, clear, Feels like +9°.

  • 9 pm: +11°, clear, Feels like +8°.

  • 10 pm: +10°, clear, Feels like +7°.

  • 11 pm: +8°, clear, Feels like +5°.

Air quality forecast

Good

The air quality is good. Enjoy your usual outdoor activities.

  • AQI — 38
  • AQI — 40
  • AQI — 40
  • AQI — 39
  • AQI — 39
  • AQI — 40
  • AQI — 39
  • AQI — 35

Weather forecast for Today, 30 October: in the morning air temperature +23°, feels like +19°, overcast, wind speed 8.8 meters per second, southerly, humidity 67%, pressure 749 millimeters of mercury; in the afternoon +27°, feels like +22°, overcast, wind speed 9.5 meters per second, southerly, humidity 46%, pressure 747 millimeters of mercury; in the evening +24°, feels like +21°, partly cloudy, wind speed 6.4 meters per second, southerly, humidity 59%, pressure 746 millimeters of mercury; in the night +23°, feels like +20°, thunderstorm with rain, wind speed 7.3 meters per second, southerly, humidity 71%, pressure 744 millimeters of mercury; uv index: 4, moderate; magnetic field: quiet; daytime water temperature +22°; sunrise 7:27 am; sunset 6:05 pm; daylight hours: 10 hr 38 min

Weather forecast for Tomorrow, 31 October: in the morning air temperature +19°, feels like +16°, thunderstorm with rain, wind speed 6.9 meters per second, south-westerly, humidity 85%, pressure 744 millimeters of mercury; in the afternoon +18°, feels like +13°, partly cloudy, wind speed 6.6 meters per second, westerly, humidity 55%, pressure 747 millimeters of mercury; in the evening +13°, feels like +9°, clear, wind speed 3.7 meters per second, north-westerly, humidity 64%, pressure 749 millimeters of mercury; in the night +7°, feels like +4°, clear, wind speed 2.4 meters per second, north-westerly, humidity 82%, pressure 751 millimeters of mercury; uv index: 2, low; magnetic field: quiet; daytime water temperature +19°; sunrise 7:28 am; sunset 6:04 pm; daylight hours: 10 hr 36 min

Weather forecast for Friday, 1 November: in the morning air temperature +8°, feels like +5°, clear, wind speed 2.7 meters per second, easterly, humidity 77%, pressure 754 millimeters of mercury; in the afternoon +16°, feels like +13°, clear, wind speed 3 meters per second, easterly, humidity 41%, pressure 753 millimeters of mercury; in the evening +10°, feels like +7°, mostly clear, wind speed 2 meters per second, easterly, humidity 64%, pressure 753 millimeters of mercury; in the night +6°, feels like +3°, partly cloudy, wind speed 1.6 meters per second, easterly, humidity 80%, pressure 753 millimeters of mercury; uv index: 4, moderate; magnetic field: quiet; daytime water temperature +15°; sunrise 7:29 am; sunset 6:02 pm; daylight hours: 10 hr 33 min

Weather forecast for Saturday, 2 November: in the morning air temperature +9°, feels like +6°, partly cloudy, wind speed 3 meters per second, easterly, humidity 74%, pressure 754 millimeters of mercury; in the afternoon +18°, feels like +15°, overcast, wind speed 3.7 meters per second, south-easterly, humidity 48%, pressure 752 millimeters of mercury; in the evening +15°, feels like +13°, overcast, wind speed 3 meters per second, easterly, humidity 69%, pressure 750 millimeters of mercury; in the night +14°, feels like +12°, light rain, wind speed 3.7 meters per second, south-easterly, humidity 80%, pressure 748 millimeters of mercury; uv index: 3, moderate; daytime water temperature +9°; sunrise 7:31 am; sunset 6:01 pm; daylight hours: 10 hr 30 min

Weather forecast for Sunday, 3 November: in the morning air temperature +18°, feels like +17°, light rain, wind speed 4 meters per second, south-easterly, humidity 89%, pressure 746 millimeters of mercury; in the afternoon +23°, feels like +23°, rain, wind speed 4.6 meters per second, southerly, humidity 74%, pressure 745 millimeters of mercury; in the evening +21°, feels like +20°, overcast, wind speed 4.8 meters per second, southerly, humidity 79%, pressure 744 millimeters of mercury; in the night +20°, feels like +19°, thunderstorm with rain, wind speed 4.9 meters per second, southerly, humidity 83%, pressure 743 millimeters of mercury; uv index: 2, low; daytime water temperature +13°; sunrise 5:32 am; sunset 4:00 pm; daylight hours: 10 hr 28 min

Weather forecast for Monday, 4 November: in the morning air temperature +21°, feels like +20°, light rain, wind speed 5.4 meters per second, southerly, humidity 82%, pressure 743 millimeters of mercury; in the afternoon +23°, feels like +22°, thunderstorm with rain, wind speed 6.1 meters per second, southerly, humidity 74%, pressure 741 millimeters of mercury; in the evening +22°, feels like +21°, rain, wind speed 6.3 meters per second, southerly, humidity 82%, pressure 741 millimeters of mercury; in the night +20°, feels like +19°, heavy rain, wind speed 4.9 meters per second, south-westerly, humidity 90%, pressure 740 millimeters of mercury; uv index: 0, low; daytime water temperature +18°; sunrise 6:33 am; sunset 4:59 pm; daylight hours: 10 hr 26 min

Weather forecast for Tuesday, 5 November: in the morning air temperature +19°, feels like +17°, heavy rain, wind speed 5 meters per second, south-westerly, humidity 81%, pressure 740 millimeters of mercury; in the afternoon +20°, feels like +17°, light rain, wind speed 5.5 meters per second, south-westerly, humidity 67%, pressure 742 millimeters of mercury; in the evening +15°, feels like +13°, mostly clear, wind speed 3.7 meters per second, north-westerly, humidity 76%, pressure 745 millimeters of mercury; in the night +11°, feels like +8°, clear, wind speed 3.2 meters per second, north-westerly, humidity 82%, pressure 748 millimeters of mercury; daytime water temperature +19°; sunrise 6:34 am; sunset 4:58 pm; daylight hours: 10 hr 24 min

Weather forecast for Wednesday, 6 November: in the morning air temperature +11°, feels like +8°, clear, wind speed 2.9 meters per second, north-westerly, humidity 79%, pressure 750 millimeters of mercury; in the afternoon +18°, feels like +15°, clear, wind speed 3.2 meters per second, north-westerly, humidity 47%, pressure 750 millimeters of mercury; in the evening +11°, feels like +9°, clear, wind speed 2 meters per second, southerly, humidity 73%, pressure 750 millimeters of mercury; in the night +9°, feels like +7°, mostly clear, wind speed 2.4 meters per second, westerly, humidity 87%, pressure 750 millimeters of mercury; daytime water temperature +16°; sunrise 6:35 am; sunset 4:57 pm; daylight hours: 10 hr 22 min

Weather forecast for Thursday, 7 November: in the morning air temperature +9°, feels like +6°, mostly clear, wind speed 3.2 meters per second, north-westerly, humidity 83%, pressure 751 millimeters of mercury; in the afternoon +16°, feels like +13°, mostly clear, wind speed 3.4 meters per second, north-westerly, humidity 63%, pressure 751 millimeters of mercury; in the evening +12°, feels like +10°, mostly clear, wind speed 2.7 meters per second, north-westerly, humidity 76%, pressure 749 millimeters of mercury; in the night +9°, feels like +6°, clear, wind speed 2.5 meters per second, south-westerly, humidity 85%, pressure 749 millimeters of mercury; daytime water temperature +12°; sunrise 6:36 am; sunset 4:56 pm; daylight hours: 10 hr 20 min

Weather forecast for Friday, 8 November: in the morning air temperature +11°, feels like +8°, clear, wind speed 3.7 meters per second, westerly, humidity 83%, pressure 748 millimeters of mercury; in the afternoon +19°, feels like +16°, clear, wind speed 4.4 meters per second, south-westerly, humidity 55%, pressure 747 millimeters of mercury; in the evening +13°, feels like +11°, clear, wind speed 2.7 meters per second, south-westerly, humidity 73%, pressure 747 millimeters of mercury; in the night +10°, feels like +8°, clear, wind speed 2.4 meters per second, westerly, humidity 86%, pressure 748 millimeters of mercury; daytime water temperature +11°; sunrise 6:37 am; sunset 4:55 pm; daylight hours: 10 hr 18 min

Weather forecast O'Fallon, United States for the next month

Get the weather forecast for the next 30 days, including october and november. There's a separate page where you can view the daytime and nighttime air temperature, precipitation, the number of sunny days, air pressure, and humidity.

View the monthly weather forecast

Weather in O'Fallon — FAQ

What is the weather today in O'Fallon?

The weather in O'Fallon today: partly cloudy, with an air temperature of +25°.

What will the weather in O'Fallon be like tomorrow?

The weather in O'Fallon tomorrow: thunderstorm with rain, with an air temperature of +17°.

What is the usual weather in O'Fallon in October?

In October, the weather in O'Fallon is usually clear, with an average air temperature of +18°.

What is the air pollution level in O'Fallon right now?

The air pollution level in O'Fallon is currently low, measuring 40.

What is the coldest month in O'Fallon?

The coldest month in O'Fallon is January, with an average air temperature of +2°.

What is the hottest month in O'Fallon?

The hottest month in O'Fallon is July, with an average air temperature of +30°.

Discover O'Fallon's weather update: +26° now, reaching a high of +28° and a low of +20°. Prepare for the day ahead with our reliable forecast, ensuring you're ready for any temperature changes. Whether you're indoors or outdoors, stay in the know about O'Fallon's weather conditions.

Weather forecast for tomorrow: heavy rain · +20⁠°, 8⁠° colder than today · winds at 4⁠–⁠6 m⁠/⁠s with gusts up to 12 m⁠/⁠s. Weather forecast for the week: rain, thunderstorms · temperature will drop to +17⁠° · winds at 6 m⁠/⁠s with gusts up to 12 m⁠/⁠s. Weather forecast for today: light rain will start around 5:00 · winds at 6 m⁠/⁠s with gusts up to 10 m⁠/⁠s · +20⁠…⁠+28⁠°. Weather forecast for the weekend: rain · +20⁠…⁠+23⁠° · light winds at 4 m⁠/⁠s with gusts up to 10 m⁠/⁠s

Weather forecast for Today, 30 October: in the morning air temperature +23°, feels like +19°, overcast, wind speed 8.8 meters per second, southerly, humidity 67%, pressure 749 millimeters of mercury; in the afternoon +27°, feels like +22°, overcast, wind speed 9.5 meters per second, southerly, humidity 46%, pressure 747 millimeters of mercury; in the evening +24°, feels like +21°, partly cloudy, wind speed 6.4 meters per second, southerly, humidity 59%, pressure 746 millimeters of mercury; in the night +23°, feels like +20°, thunderstorm with rain, wind speed 7.3 meters per second, southerly, humidity 71%, pressure 744 millimeters of mercury; uv index: 4, moderate; magnetic field: quiet; daytime water temperature +22°; sunrise 7:27 am; sunset 6:05 pm; daylight hours: 10 hr 38 min

Weather forecast for Tomorrow, 31 October: in the morning air temperature +19°, feels like +16°, thunderstorm with rain, wind speed 6.9 meters per second, south-westerly, humidity 85%, pressure 744 millimeters of mercury; in the afternoon +18°, feels like +13°, partly cloudy, wind speed 6.6 meters per second, westerly, humidity 55%, pressure 747 millimeters of mercury; in the evening +13°, feels like +9°, clear, wind speed 3.7 meters per second, north-westerly, humidity 64%, pressure 749 millimeters of mercury; in the night +7°, feels like +4°, clear, wind speed 2.4 meters per second, north-westerly, humidity 82%, pressure 751 millimeters of mercury; uv index: 2, low; magnetic field: quiet; daytime water temperature +19°; sunrise 7:28 am; sunset 6:04 pm; daylight hours: 10 hr 36 min