O'Fallon, MO Weather Forecast

Tonight's Weather

Sun, Oct 11

Clear and warm Lo: 62°

Tomorrow: Breezy in the morning; otherwise, hot with plenty of sunshine; possible danger of dehydration and heatstroke while doing strenuous activities Hi: 93°

Current Weather

8:53 PM

Looking Ahead

Tropical moisture can contribute to rounds of rain and flooding this week; check AccuWeather often

O'Fallon Weather Radar

Static Radar Temporarily Unavailable

Thank you for your patience as we work to get everything up and running again.

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Clouds

Temperature

Hourly Weather

10-Day Weather Forecast

Tonight

10/11

62° Lo

Clear and warm

Mon

10/12

93° 66°

Hot; breezy in the morning

Night: Clear and warm

Tue

10/13

92° 71°

Partly sunny and hot

A couple of showers late

16%

Wed

10/14

75° 66°

Humid with periods of rain

Warm with rain and a t-storm

91%

Thu

10/15

77° 54°

Humid with a stray t-storm

Rain, a thunderstorm

55%

Fri

10/16

63° 39°

Partly sunny; windy, cooler

Partly cloudy and colder

14%

Sat

10/17

61° 41°

Sunshine and a few clouds

Mostly clear

Sun

10/18

67° 45°

Shifting clouds and sun

A couple of showers late

Mon

10/19

69° 48°

Rain and a thunderstorm

A shower early; clearing

70%

Tue

10/20

72° 51°

Mostly sunny with a shower

Clear

55%

Sun & Moon

11 hrs 23 mins

Rise 7:08 AM

Set 6:31 PM

Waxing Crescent

Rise 8:14 AM

Set 6:43 PM

Air Quality

Air Quality Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.