Current Weather Forecast for O'Fallon

MO 63368  |   1:29pm

Weather Conditions

35°

Feels Like 35°

Cloudy

26° 37°

0

UV Index

Moderate

Air Quality

NW 0 mph

Wind

0 in

rain

Today

Thu 1/1

37°

Highest Temperature

3%

Generally cloudy. High 37F. Winds light and variable.

Tonight

Thu 1/1

26°

Lowest Temperature

14%

Cloudy. Low 26F. Winds light and variable.

Tomorrow

Fri 1/2

38°

Highest Temperature

7%

Cloudy skies. High 38F. Winds light and variable.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in O'Fallon

Hourly Weather Forecast & Temperature

2PM

2%

36°

Feels Like 36°

Cloudy

SE 0 mph

Wind

1015 mb

Pressure

84%

Humidity

1

UV Index

8mi

Visibility

95%

Cloud Cover

3PM

2%

36°

Feels Like 36°

Cloudy

NE 1 mph

Wind

1014 mb

Pressure

83%

Humidity

0

UV Index

9mi

Visibility

89%

Cloud Cover

4PM

2%

36°

Feels Like 36°

Cloudy

NNE 1 mph

Wind

1014 mb

Pressure

83%

Humidity

0

UV Index

9mi

Visibility

82%

Cloud Cover

5PM

2%

35°

Feels Like 35°

Mostly Cloudy

NE 2 mph

Wind

1014 mb

Pressure

82%

Humidity

0

UV Index

8mi

Visibility

74%

Cloud Cover

6PM

3%

33°

Feels Like 33°

Mostly Cloudy

ENE 1 mph

Wind

1014 mb

Pressure

85%

Humidity

0

UV Index

7mi

Visibility

73%

Cloud Cover

7PM

3%

32°

Feels Like 32°

Cloudy

NE 1 mph

Wind

1014 mb

Pressure

87%

Humidity

0

UV Index

7mi

Visibility

86%

Cloud Cover

8PM

5%

31°

Feels Like 31°

Cloudy

NE 1 mph

Wind

1014 mb

Pressure

89%

Humidity

0

UV Index

8mi

Visibility

86%

Cloud Cover

9PM

8%

30°

Feels Like 30°

Cloudy

NNE 1 mph

Wind

1014 mb

Pressure

90%

Humidity

0

UV Index

7mi

Visibility

86%

Cloud Cover

10PM

8%

29°

Feels Like 29°

Cloudy

NE 1 mph

Wind

1014 mb

Pressure

91%

Humidity

0

UV Index

9mi

Visibility

86%

Cloud Cover

11PM

8%

28°

Feels Like 28°

Cloudy

NE 1 mph

Wind

1014 mb

Pressure

90%

Humidity

0

UV Index

7mi

Visibility

87%

Cloud Cover

12AM

8%

28°

Feels Like 28°

Cloudy

NE 2 mph

Wind

1014 mb

Pressure

91%

Humidity

0

UV Index

7mi

Visibility

87%

Cloud Cover

1AM

8%

28°

Feels Like 28°

Cloudy

NE 2 mph

Wind

1013 mb

Pressure

90%

Humidity

0

UV Index

6mi

Visibility

86%

Cloud Cover

Thu 1/1

Thu

3%

26°

37°

Mostly cloudy. Highs in the upper 30s and lows in the mid 20s.

33°

Feels Like

NE 2 mph

Wind

83%

Humidity

1

UV Index

7:21 AM

Sunrise

4:52 PM

Sunset

Fri 1/2

Fri

7%

26°

38°

Cloudy. Highs in the upper 30s and lows in the upper 20s.

23°

Feels Like

ENE 6 mph

Wind

69%

Humidity

1

UV Index

7:21 AM

Sunrise

4:53 PM

Sunset

Sat 1/3

Sat

3%

27°

40°

Clouds giving way to sun . Highs in the low 40s and lows in the mid 20s.

24°

Feels Like

N 5 mph

Wind

62%

Humidity

2

UV Index

7:21 AM

Sunrise

4:53 PM

Sunset

Sun 1/4

Sun

5%

24°

42°

Considerable cloudiness. Highs in the low 40s and lows in the low 30s.

26°

Feels Like

SE 7 mph

Wind

66%

Humidity

1

UV Index

7:21 AM

Sunrise

4:54 PM

Sunset

Mon 1/5

Mon

5%

31°

57°

Times of sun and clouds. Highs in the upper 50s and lows in the low 40s.

30°

Feels Like

SSW 9 mph

Wind

69%

Humidity

2

UV Index

7:21 AM

Sunrise

4:55 PM

Sunset

Tue 1/6

Tue

8%

38°

58°

Mostly cloudy. Highs in the upper 50s and lows in the low 30s.

39°

Feels Like

WSW 7 mph

Wind

80%

Humidity

2

UV Index

7:21 AM

Sunrise

4:56 PM

Sunset

Wed 1/7

Wed

19%

33°

56°

Partly cloudy. Highs in the mid 50s and lows in the low 40s.

32°

Feels Like

S 6 mph

Wind

74%

Humidity

2

UV Index

7:21 AM

Sunrise

4:57 PM

Sunset

Thu 1/8

Thu

61%

41°

59°

Showers possible. Highs in the upper 50s and lows in the upper 40s.

40°

Feels Like

SSE 11 mph

Wind

73%

Humidity

1

UV Index

7:21 AM

Sunrise

4:58 PM

Sunset

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Latest Stories from Missouri

Looking back: Extreme weather and disasters that made 2025 a year to remember

In 2025, extreme weather and natural disasters delivered earth-shattering, heart-stopping moments that were chronicled on FOX Weather, as they happened. Each month packed a punch in a unique way. Records were shattered, droughts ended, and the sky illuminated in a vibrant splash of color in an unforgettable year.

Major storm to slam Midwest with vicious winds, blizzard conditions before sweeping into the Northeast

Just after a strong winter storm blanketed areas of the Northeast in snow, another fast-moving system will bring a mixture of rain and snow blended with a blast of arctic air that will usher in below-average temperatures along much of the East Coast to start off the New Year.

Christmas weather outlook: Millions to see 'nice' forecast with a touch of 'naughty' across nation

Naughty or nice, how will the weather be in your region on Christmas Day?

Coast-to-coast storm comes to an end after delivering gusty winds to Northeast, Midwest

The damaging winds caused by a massive coast-to-coast storm that brought impacts to more than 30 states from the Northwest to the Northeast are easing up on Saturday after reports of 60+ mph winds in the East and 100+ mph winds in the Upper Midwest.

Load More Stories