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O'Fallon, MO

78°F
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O'Fallon

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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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April 23 - May 7

Thu 4/23

84° /61°
5%
Partly sunny, breezy and very warm

RealFeel®84°

RealFeel Shade™80°

Max UV Index9.0 (Very High)

WindS 13 mph

Fri 4/24

75° /48°
55%
Cloudy and not as warm with a thundershower

RealFeel®74°

RealFeel Shade™72°

Max UV Index2.0 (Low)

WindWNW 8 mph

Sat 4/25

77° /53°
6%
Comfortable with intervals of clouds and sun

RealFeel®83°

RealFeel Shade™74°

Max UV Index9.0 (Very High)

WindE 7 mph

Sun 4/26

78° /62°
25%
Cloudy

RealFeel®77°

RealFeel Shade™74°

Max UV Index3.0 (Moderate)

WindESE 10 mph

Mon 4/27

85° /52°
91%
Mostly cloudy, windy and humid with a couple of drenching thunderstorms; thunderstorms can bring hail and damaging winds

RealFeel®85°

RealFeel Shade™82°

Max UV Index5.0 (Moderate)

WindSSW 18 mph

Tue 4/28

71° /49°
17%
Turning cloudy and less humid

RealFeel®75°

RealFeel Shade™69°

Max UV Index6.0 (High)

WindNNW 5 mph

Wed 4/29

69° /51°
25%
Clouds followed by a brightening sky

RealFeel®69°

RealFeel Shade™66°

Max UV Index3.0 (Moderate)

WindNNE 8 mph

Thu 4/30

61° /44°
58%
Cloudy with a couple of showers, mainly early in the day

RealFeel®58°

RealFeel Shade™58°

Max UV Index2.0 (Low)

WindNE 10 mph

Fri 5/1

56° /40°
9%
Mostly cloudy

RealFeel®55°

RealFeel Shade™52°

Max UV Index3.0 (Moderate)

WindN 9 mph

Sat 5/2

64° /44°
0%
Partly sunny

RealFeel®74°

RealFeel Shade™64°

Max UV Index6.0 (High)

WindNNW 4 mph

Sun 5/3

66° /49°
40%
Mostly cloudy with a stray shower in the afternoon

RealFeel®65°

RealFeel Shade™64°

Max UV Index6.0 (High)

WindS 13 mph

Mon 5/4

68° /51°
1%
Mostly cloudy in the morning followed by sun through high clouds in the afternoon

RealFeel®72°

RealFeel Shade™67°

Max UV Index6.0 (High)

WindNW 5 mph

Tue 5/5

68° /52°
55%
Occasional morning rain; otherwise, plenty of clouds

RealFeel®66°

RealFeel Shade™66°

Max UV Index2.0 (Low)

WindSSE 12 mph

Wed 5/6

73° /51°
75%
Rain

RealFeel®72°

RealFeel Shade™72°

Max UV Index2.0 (Low)

WindENE 8 mph

Thu 5/7

67° /47°
20%
After a cloudy start, sunshine returns

RealFeel®71°

RealFeel Shade™63°

Max UV Index10.0 (Very High)

WindNNE 10 mph

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World North America United States Missouri O'Fallon

Weather Near O'Fallon:

  • St. Charles, MO
  • St. Louis, MO
  • St. Peters, MO
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