O'Fallon, MO Weather Forecast

Today's Weather

Thu, Jul 9

Partly sunny and humid; a drenching thunderstorm in the afternoon; thunderstorms can bring flooding downpours, hail and damaging wind gusts Hi: 89°

Tonight: Rather cloudy and humid with a couple of showers and a heavy thunderstorm; thunderstorms can bring flooding downpours, hail and damaging wind gusts Lo: 73°

Current Weather

1:37 AM

75°F

RealFeel® 81°

Mostly clear More Details

Wind E 1 mph

Wind Gusts 2 mph

Air Quality Fair

Looking Ahead

Thunderstorms, some heavy, this afternoon through late tomorrow night

O'Fallon Weather Radar

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Clouds

Temperature

Hourly Weather

10-Day Weather Forecast

Today

7/9

89° 73°

A heavy t-storm in the p.m.

Night: Showers and a heavier t-storm

88%

Fri

7/10

85° 71°

A shower and t-storm; humid

88%

Sat

7/11

84° 66°

Cloudy with a stray t-storm

Partly cloudy

55%

Sun

7/12

90° 66°

Mostly sunny

A crystal-clear sky

11%

Mon

7/13

89° 66°

Plenty of sunshine

A crystal-clear sky

Tue

7/14

88° 69°

Mostly sunny

A crystal-clear sky

Wed

7/15

93° 71°

Mostly sunny, a shower; hot

Partly cloudy

55%

Thu

7/16

92° 70°

Partly sunny

Clear

Fri

7/17

90° 69°

Mostly sunny with a shower

Clear

55%

Sat

7/18

92° 69°

High thin cloudiness

Humid; a t-storm around late

Sun & Moon

14 hrs 44 mins

Rise 5:46 AM

Set 8:30 PM

Waning Crescent

Rise 1:02 AM

Set 3:43 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.