O'Fallon, MO Weather Forecast

Today's Weather

Wed, Jun 17

Partly sunny and windy; a severe thunderstorm late this afternoon; storms can bring flash flooding, hail, damaging winds, and even a tornado Hi: 91°

Tonight: Heavy thunderstorms this evening; clouds breaking, humid; storms can bring flooding downpours, hail, damaging wind gusts, and an isolated tornado Lo: 65°

Current Weather

11:26 AM

84°F

RealFeel® 95°

Partly sunny More Details

Looking Ahead

Thunderstorms, some severe, late this afternoon through this evening

O'Fallon Weather Radar

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Clouds

Temperature

Hourly Weather

10-Day Weather Forecast

Today

6/17

91° 65°

A severe p.m. t-storm; windy

Night: Heavy evening t-storms; humid

55%

Thu

6/18

79° 58°

Partly sunny and not as warm

Partly cloudy with a shower

25%

Fri

6/19

85° 63°

Mostly sunny

Partly cloudy

Sat

6/20

85° 71°

Times of clouds and sun

Strong thunderstorms late

25%

Sun

6/21

81° 65°

Humid with a t-storm or two

Strong thunderstorms

95%

Mon

6/22

75° 59°

Periods of sun with a shower

Partly cloudy

55%

Tue

6/23

79° 60°

Partly sunny

Partly cloudy

24%

Wed

6/24

80° 63°

Mostly sunny

Partly cloudy

Thu

6/25

82° 65°

A t-storm around in the p.m.

A few showers in the evening

55%

Fri

6/26

84° 67°

A t-storm around in the a.m.

Clear and humid

55%

Sun & Moon

14 hrs 53 mins

Rise 5:37 AM

Set 8:30 PM

Waxing Crescent

Rise 8:16 AM

Set 11:14 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.