+23°
Feels like +28°This time yesterday +24°Yesterday +24°
Clear, no precipitation is expected for the next 2 hours
Calm75496%24°
Weather forecast in O'Fallon, United States
O'Fallon, United States: Hourly forecast
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Weather forecast for 10 days in O'Fallon, United States
O'Fallon. Weather forecast for today, 20 June: in the morning air temperature +26°, feels like +31°, clear, wind speed 2.5 meters per second, southerly, humidity 73%, pressure 754 millimeters of mercury; in the afternoon +33°, feels like +37°, clear, wind speed 3.5 meters per second, south-easterly, humidity 44%, pressure 754 millimeters of mercury; in the evening +29°, feels like +30°, clear, wind speed 2.7 meters per second, southerly, humidity 52%, pressure 752 millimeters of mercury; in the night +22°, feels like +23°, clear, wind speed 2 meters per second, south-westerly, humidity 78%, pressure 753 millimeters of mercury; uv index: 11, extreme; magnetic field: quiet; daytime water temperature +33°; sunrise 5:38 am; sunset 8:30 pm; daylight hours: 14 hr 52 min
O'Fallon. Weather forecast for tomorrow, 21 June: in the morning air temperature +27°, feels like +31°, clear, wind speed 3.7 meters per second, south-westerly, humidity 70%, pressure 753 millimeters of mercury; in the afternoon +33°, feels like +36°, clear, wind speed 4 meters per second, south-westerly, humidity 42%, pressure 751 millimeters of mercury; in the evening +30°, feels like +31°, clear, wind speed 3 meters per second, southerly, humidity 51%, pressure 749 millimeters of mercury; in the night +24°, feels like +25°, clear, wind speed 2.2 meters per second, south-westerly, humidity 71%, pressure 749 millimeters of mercury; uv index: 11, extreme; magnetic field: unsettled; daytime water temperature +34°; sunrise 5:38 am; sunset 8:31 pm; daylight hours: 14 hr 53 min
O'Fallon. Weather forecast for Saturday, 22 June: in the morning air temperature +28°, feels like +30°, clear, wind speed 5.5 meters per second, south-westerly, humidity 62%, pressure 748 millimeters of mercury; in the afternoon +34°, feels like +36°, clear, wind speed 5.5 meters per second, south-westerly, humidity 41%, pressure 746 millimeters of mercury; in the evening +31°, feels like +31°, clear, wind speed 4.5 meters per second, south-westerly, humidity 47%, pressure 744 millimeters of mercury; in the night +26°, feels like +27°, thunderstorm with rain, wind speed 3.7 meters per second, south-westerly, humidity 68%, pressure 744 millimeters of mercury; uv index: 10, very high; magnetic field: quiet; daytime water temperature +34°; sunrise 5:38 am; sunset 8:31 pm; daylight hours: 14 hr 53 min
O'Fallon. Weather forecast for Sunday, 23 June: in the morning air temperature +25°, feels like +28°, thunderstorm with rain, wind speed 3.4 meters per second, south-westerly, humidity 82%, pressure 745 millimeters of mercury; in the afternoon +32°, feels like +37°, partly cloudy, wind speed 3.9 meters per second, north-westerly, humidity 56%, pressure 745 millimeters of mercury; in the evening +30°, feels like +31°, partly cloudy, wind speed 3 meters per second, north-westerly, humidity 54%, pressure 744 millimeters of mercury; in the night +23°, feels like +25°, partly cloudy, wind speed 2.2 meters per second, south-westerly, humidity 77%, pressure 745 millimeters of mercury; uv index: 3, moderate; daytime water temperature +32°; sunrise 5:38 am; sunset 8:31 pm; daylight hours: 14 hr 53 min
O'Fallon. Weather forecast for Monday, 24 June: in the morning air temperature +27°, feels like +30°, partly cloudy, wind speed 2.7 meters per second, southerly, humidity 74%, pressure 746 millimeters of mercury; in the afternoon +35°, feels like +36°, partly cloudy, wind speed 3.5 meters per second, south-westerly, humidity 41%, pressure 745 millimeters of mercury; in the evening +33°, feels like +34°, partly cloudy, wind speed 2.9 meters per second, south-westerly, humidity 43%, pressure 743 millimeters of mercury; in the night +25°, feels like +26°, mostly clear, wind speed 2.7 meters per second, south-westerly, humidity 68%, pressure 744 millimeters of mercury; uv index: 0, low; daytime water temperature +35°; sunrise 5:39 am; sunset 8:31 pm; daylight hours: 14 hr 52 min
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O'Fallon. Weather forecast for Tuesday, 25 June: in the morning air temperature +29°, feels like +31°, partly cloudy, wind speed 3.7 meters per second, south-westerly, humidity 66%, pressure 745 millimeters of mercury; in the afternoon +34°, feels like +35°, thunderstorm with rain, wind speed 4.4 meters per second, south-westerly, humidity 44%, pressure 745 millimeters of mercury; in the evening +30°, feels like +32°, light rain, wind speed 3 meters per second, south-westerly, humidity 55%, pressure 743 millimeters of mercury; in the night +24°, feels like +26°, light rain, wind speed 2.5 meters per second, south-westerly, humidity 79%, pressure 745 millimeters of mercury; daytime water temperature +34°; sunrise 5:39 am; sunset 8:31 pm; daylight hours: 14 hr 52 min
O'Fallon. Weather forecast for Wednesday, 26 June: in the morning air temperature +25°, feels like +27°, light rain, wind speed 3 meters per second, north-westerly, humidity 82%, pressure 746 millimeters of mercury; in the afternoon +30°, feels like +30°, light rain, wind speed 3.7 meters per second, northerly, humidity 50%, pressure 746 millimeters of mercury; in the evening +28°, feels like +29°, light rain, wind speed 3 meters per second, northerly, humidity 55%, pressure 745 millimeters of mercury; in the night +22°, feels like +23°, light rain, wind speed 2.4 meters per second, north-westerly, humidity 75%, pressure 746 millimeters of mercury; daytime water temperature +30°; sunrise 5:39 am; sunset 8:31 pm; daylight hours: 14 hr 52 min
O'Fallon. Weather forecast for Thursday, 27 June: in the morning air temperature +24°, feels like +25°, light rain, wind speed 3 meters per second, north-easterly, humidity 74%, pressure 748 millimeters of mercury; in the afternoon +30°, feels like +30°, light rain, wind speed 3.4 meters per second, north-easterly, humidity 49%, pressure 747 millimeters of mercury; in the evening +28°, feels like +29°, clear, wind speed 2.5 meters per second, north-easterly, humidity 53%, pressure 746 millimeters of mercury; in the night +22°, feels like +23°, light rain, wind speed 2.2 meters per second, south-easterly, humidity 73%, pressure 746 millimeters of mercury; daytime water temperature +30°; sunrise 5:40 am; sunset 8:31 pm; daylight hours: 14 hr 51 min
O'Fallon. Weather forecast for Friday, 28 June: in the morning air temperature +23°, feels like +23°, light rain, wind speed 3.4 meters per second, south-easterly, humidity 72%, pressure 746 millimeters of mercury; in the afternoon +30°, feels like +30°, partly cloudy, wind speed 3.7 meters per second, south-easterly, humidity 46%, pressure 746 millimeters of mercury; in the evening +29°, feels like +30°, partly cloudy, wind speed 3.2 meters per second, south-easterly, humidity 53%, pressure 745 millimeters of mercury; in the night +23°, feels like +23°, clear, wind speed 2.9 meters per second, southerly, humidity 69%, pressure 746 millimeters of mercury; daytime water temperature +30°; sunrise 5:40 am; sunset 8:31 pm; daylight hours: 14 hr 51 min
O'Fallon. Weather forecast for Saturday, 29 June: in the morning air temperature +24°, feels like +25°, partly cloudy, wind speed 3.2 meters per second, southerly, humidity 73%, pressure 748 millimeters of mercury; in the afternoon +31°, feels like +33°, partly cloudy, wind speed 3.2 meters per second, south-westerly, humidity 54%, pressure 748 millimeters of mercury; in the evening +28°, feels like +30°, partly cloudy, wind speed 2.4 meters per second, southerly, humidity 64%, pressure 746 millimeters of mercury; in the night +23°, feels like +24°, light rain, wind speed 2.5 meters per second, easterly, humidity 78%, pressure 747 millimeters of mercury; daytime water temperature +31°; sunrise 5:40 am; sunset 8:31 pm; daylight hours: 14 hr 51 min
Weather forecast in O'Fallon, United States for the next month
Get the weather forecast for the next 30 days, including june and july. 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 forecastWeather forecast on maps in O'Fallon, United States
Weather in O'Fallon — FAQ
What is the weather today in O'Fallon?
The weather in O'Fallon today: clear, with an air temperature of +29°.
What will the weather in O'Fallon be like tomorrow?
The weather in O'Fallon tomorrow: clear, with an air temperature of +30°.
What is the usual weather in O'Fallon in June?
In June, the weather in O'Fallon is usually partly cloudy, with an average air temperature of +29°.
What is the air pollution level in O'Fallon right now?
The air pollution level in O'Fallon is currently low, measuring 59.
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°.
O'Fallon, current weather: clear, no precipitation is expected for the next 2 hours. Air temperature +23°, feels like +28°. Wind speed - Calm. Pressure 754 millimeters of mercury. Humidity 96%. Daytime water temperature +24°. Sunrise 5:38 am, Sunset 8:30 pm. This time yesterday +24°
Weather forecast for the weekend: light rain, thunderstorms · +32…+34° · light winds at 5 m/s. Weather forecast for the week: rain, thunderstorms · +32…+34° · light winds at 5 m/s
O'Fallon. Weather forecast for today, 20 June: in the morning air temperature +26°, feels like +31°, clear, wind speed 2.5 meters per second, southerly, humidity 73%, pressure 754 millimeters of mercury; in the afternoon +33°, feels like +37°, clear, wind speed 3.5 meters per second, south-easterly, humidity 44%, pressure 754 millimeters of mercury; in the evening +29°, feels like +30°, clear, wind speed 2.7 meters per second, southerly, humidity 52%, pressure 752 millimeters of mercury; in the night +22°, feels like +23°, clear, wind speed 2 meters per second, south-westerly, humidity 78%, pressure 753 millimeters of mercury; uv index: 11, extreme; magnetic field: quiet; daytime water temperature +33°; sunrise 5:38 am; sunset 8:30 pm; daylight hours: 14 hr 52 min
Weather forecast for tomorrow, 21 June: in the morning air temperature +27°, feels like +31°, clear, wind speed 3.7 meters per second, south-westerly, humidity 70%, pressure 753 millimeters of mercury; in the afternoon +33°, feels like +36°, clear, wind speed 4 meters per second, south-westerly, humidity 42%, pressure 751 millimeters of mercury; in the evening +30°, feels like +31°, clear, wind speed 3 meters per second, southerly, humidity 51%, pressure 749 millimeters of mercury; in the night +24°, feels like +25°, clear, wind speed 2.2 meters per second, south-westerly, humidity 71%, pressure 749 millimeters of mercury; uv index: 11, extreme; magnetic field: unsettled; daytime water temperature +34°; sunrise 5:38 am; sunset 8:31 pm; daylight hours: 14 hr 53 min
