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O'Fallon, MO

66°F
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O'Fallon

Missouri

66°
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O'Fallon, MO Weather
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April 19 - May 3

Sun 4/19

68° /40°
2%
Breezy with plenty of sun; a nice end to the weekend

RealFeel®73°

RealFeel Shade™64°

Max UV Index8.0 (Very High)

WindW 10 mph

Mon 4/20

67° /49°
7%
Plenty of sunshine

RealFeel®69°

RealFeel Shade™64°

Max UV Index8.0 (Very High)

WindSSE 9 mph

Tue 4/21

79° /53°
7%
Mostly cloudy, breezy and warmer

RealFeel®78°

RealFeel Shade™75°

Max UV Index7.0 (High)

WindSW 14 mph

Wed 4/22

81° /57°
10%
Mostly sunny and very warm

RealFeel®84°

RealFeel Shade™78°

Max UV Index8.0 (Very High)

WindSW 8 mph

Thu 4/23

84° /60°
25%
Breezy and very warm with increasing cloudiness

RealFeel®83°

RealFeel Shade™80°

Max UV Index6.0 (High)

WindS 15 mph

Fri 4/24

70° /51°
88%
Mostly cloudy with a couple of showers and a thunderstorm

RealFeel®73°

RealFeel Shade™68°

Max UV Index4.0 (Moderate)

WindNNW 8 mph

Sat 4/25

67° /46°
65%
Cloudy with occasional rain in the afternoon

RealFeel®65°

RealFeel Shade™63°

Max UV Index2.0 (Low)

WindE 8 mph

Sun 4/26

68° /50°
59%
Considerable clouds; occasional rain and a thunderstorm in the morning followed by a thunderstorm in spots in the afternoon

RealFeel®71°

RealFeel Shade™67°

Max UV Index2.0 (Low)

WindSSE 5 mph

Mon 4/27

69° /51°
8%
Less humid with considerable cloudiness

RealFeel®69°

RealFeel Shade™67°

Max UV Index5.0 (Moderate)

WindNW 7 mph

Tue 4/28

69° /50°
14%
A thick cloud cover

RealFeel®69°

RealFeel Shade™68°

Max UV Index3.0 (Moderate)

WindNNE 5 mph

Wed 4/29

62° /43°
11%
Considerable cloudiness

RealFeel®62°

RealFeel Shade™62°

Max UV Index2.0 (Low)

WindNNE 7 mph

Thu 4/30

64° /43°
1%
Mostly cloudy

RealFeel®61°

RealFeel Shade™59°

Max UV Index6.0 (High)

WindWNW 16 mph

Fri 5/1

65° /46°
1%
Clouds limiting sun

RealFeel®65°

RealFeel Shade™64°

Max UV Index4.0 (Moderate)

WindNW 8 mph

Sat 5/2

72° /51°
55%
Cloudy with occasional rain

RealFeel®70°

RealFeel Shade™69°

Max UV Index2.0 (Low)

WindSE 7 mph

Sun 5/3

67° /54°
72%
Cloudy with a couple of showers followed by a steadier rain

RealFeel®64°

RealFeel Shade™62°

Max UV Index2.0 (Low)

WindSSE 9 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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