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O'Fallon, MO

80°F
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O'Fallon, MO Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center

Today

 Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Tonight's Weather

Sun, May 17

Breezy this evening; otherwise, partly cloudy and very warm Lo: 74°

Tomorrow: Times of clouds and sun, breezy and humid with a thunderstorm Hi: 82°

Current Weather

10:26 PM

80°F
RealFeel® 79°
Mostly clear More Details
Heat Index 80°
Wind S 4 mph
Wind Gusts 8 mph
Air Quality Fair

Looking Ahead

Thunderstorms, some strong, late tomorrow night through Tuesday evening; storms can bring hail and damaging winds

O'Fallon Weather Radar

O'Fallon Weather Radar
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Clouds
Temperature

Hourly Weather

11 PM 79°
rain drop 0%
12 AM 78°
rain drop 0%
1 AM 77°
rain drop 0%
2 AM 77°
rain drop 0%
3 AM 76°
rain drop 0%
4 AM 75°
rain drop 0%
5 AM 75°
rain drop 1%
6 AM 74°
rain drop 1%
7 AM 74°
rain drop 4%
8 AM 75°
rain drop 19%
9 AM 76°
rain drop 19%
10 AM 77°
rain drop 24%

10-Day Weather Forecast

Tonight

5/17

74° Lo

Warm; breezy this evening

11%

Mon

5/18

82° 72°

A thunderstorm; breezy, humid

Night: A strong thunderstorm late
55%

Tue

5/19

79° 58°

A shower and thunderstorm

Cooler; a heavy t-storm early
88%

Wed

5/20

68° 55°

Partly sunny and cooler

Mainly clear
13%

Thu

5/21

73° 60°

Pleasant with clouds and sun

Mostly cloudy
25%

Fri

5/22

78° 63°

A couple of afternoon showers

Humid; an evening shower
82%

Sat

5/23

80° 64°

Cloudy, a t-storm possible

Partly cloudy and humid
30%

Sun

5/24

86° 67°

A thunderstorm possible

Some clouds; humid
30%

Mon

5/25

84° 66°

Warm with periods of sun

Showers around in the evening
25%

Tue

5/26

82° 68°

Humid with a stray t-storm

Humid; a late-night shower
55%

Sun & Moon

14 hrs 21 mins
Rise 5:47 AM
Set 8:08 PM
Waxing Crescent
Rise 5:59 AM
Set 9:50 PM

Air Quality

See More
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.

Allergy Outlook

See All
Tree Pollen Very High Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander High Data is not supported in this location

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Weather Near O'Fallon:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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