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Northeast braces for coldest weekend of winter. See how low temps will plunge. Chevron right

O'Fallon, IL

29°F
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O'Fallon

Illinois

29°
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O'Fallon, IL Weather
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February 7 - March 8

Sat 2/7

38° /26°
0%
Partly cloudy

RealFeel®14°

Cloud Cover52%

WindSE 9 mph

Wind Gusts14 mph

Sun 2/8

44° /28°
2%
Partly sunny; warming up over the next few days

RealFeel®39°

RealFeel Shade™36°

Max UV Index3.0 (Moderate)

WindSE 12 mph

Mon 2/9

57° /39°
1%
Not as cool with plenty of sunshine

RealFeel®58°

RealFeel Shade™55°

Max UV Index3.0 (Moderate)

WindSSW 6 mph

Tue 2/10

56° /33°
11%
Mostly cloudy

RealFeel®57°

RealFeel Shade™56°

Max UV Index3.0 (Moderate)

WindN 7 mph

Wed 2/11

51° /34°
13%
Mostly cloudy

RealFeel®51°

RealFeel Shade™49°

Max UV Index2.0 (Low)

WindENE 7 mph

Thu 2/12

47° /33°
82%
Cloudy; a brief shower or two in the morning followed by occasional rain and a thunderstorm in the afternoon

RealFeel®44°

RealFeel Shade™44°

Max UV Index1.0 (Low)

WindENE 9 mph

Fri 2/13

48° /28°
9%
Mostly cloudy

RealFeel®46°

RealFeel Shade™46°

Max UV Index2.0 (Low)

WindNNE 7 mph

Sat 2/14

47° /27°
0%
After a cloudy start, sunshine returns

RealFeel®50°

RealFeel Shade™46°

Max UV Index4.0 (Moderate)

WindNE 6 mph

Sun 2/15

51° /34°
0%
Sunshine and a few clouds

RealFeel®54°

RealFeel Shade™49°

Max UV Index4.0 (Moderate)

WindSE 5 mph

Mon 2/16

55° /46°
0%
Mostly sunny

RealFeel®52°

RealFeel Shade™49°

Max UV Index4.0 (Moderate)

WindS 12 mph

Tue 2/17

58° /40°
8%
Low clouds

RealFeel®52°

RealFeel Shade™52°

Max UV Index1.0 (Low)

WindS 14 mph

Wed 2/18

56° /35°
75%
Rain

RealFeel®50°

RealFeel Shade™50°

Max UV Index2.0 (Low)

WindSW 15 mph

Thu 2/19

52° /33°
57%
Cloudy with a passing shower in the afternoon

RealFeel®53°

RealFeel Shade™53°

Max UV Index1.0 (Low)

WindWNW 6 mph

Fri 2/20

49° /28°
61%
Cloudy; a bit of snow in the morning followed by a little rain in the afternoon

RealFeel®46°

RealFeel Shade™46°

Max UV Index1.0 (Low)

WindENE 7 mph

Sat 2/21

41° /28°
25%
Mostly cloudy

RealFeel®43°

RealFeel Shade™38°

Max UV Index4.0 (Moderate)

WindWNW 7 mph

Sun 2/22

44° /30°
25%
Cloudy

RealFeel®38°

RealFeel Shade™38°

Max UV Index1.0 (Low)

WindESE 7 mph

Mon 2/23

52° /38°
25%
Cloudy

RealFeel®50°

RealFeel Shade™50°

Max UV Index1.0 (Low)

WindESE 8 mph

Tue 2/24

57° /37°
55%
Remaining cloudy with a little rain

RealFeel®50°

RealFeel Shade™50°

Max UV Index1.0 (Low)

WindS 15 mph

Wed 2/25

60° /22°
25%
Windy with sun and some clouds

RealFeel®54°

RealFeel Shade™52°

Max UV Index4.0 (Moderate)

WindW 23 mph

Thu 2/26

41° /21°
25%
Cooler with sun and some clouds

RealFeel®32°

RealFeel Shade™30°

Max UV Index4.0 (Moderate)

WindNW 14 mph

Fri 2/27

40° /22°
20%
Plenty of sun

RealFeel®39°

RealFeel Shade™35°

Max UV Index4.0 (Moderate)

WindW 8 mph

Sat 2/28

42° /30°
20%
Mostly sunny

RealFeel®34°

RealFeel Shade™32°

Max UV Index4.0 (Moderate)

WindSSW 15 mph

Sun 3/1

51° /35°
68%
Cloudy with periods of rain in the afternoon

RealFeel®47°

RealFeel Shade™47°

Max UV Index2.0 (Low)

WindS 9 mph

Mon 3/2

52° /28°
25%
Partly sunny

RealFeel®53°

RealFeel Shade™49°

Max UV Index4.0 (Moderate)

WindN 10 mph

Tue 3/3

45° /24°
20%
After a cloudy start, sunshine returns

RealFeel®54°

RealFeel Shade™46°

Max UV Index4.0 (Moderate)

WindNW 4 mph

Wed 3/4

47° /28°
20%
Clouds rolling in

RealFeel®50°

RealFeel Shade™42°

Max UV Index4.0 (Moderate)

WindS 6 mph

Thu 3/5

59° /35°
10%
Mostly sunny

RealFeel®63°

RealFeel Shade™58°

Max UV Index4.0 (Moderate)

WindWNW 6 mph

Fri 3/6

59° /31°
20%
Mostly sunny

RealFeel®60°

RealFeel Shade™56°

Max UV Index4.0 (Moderate)

WindN 8 mph

Sat 3/7

48° /30°
20%
Cooler with sunshine and some clouds

RealFeel®55°

RealFeel Shade™48°

Max UV Index4.0 (Moderate)

WindWNW 4 mph

Sun 3/8

53° /28°
20%
Mostly sunny

RealFeel®54°

RealFeel Shade™50°

Max UV Index5.0 (Moderate)

WindSE 7 mph

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World North America United States Illinois O'Fallon

Weather Near O'Fallon:

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