Current Weather Forecast for O'Fallon

MO 63368  |   2:07pm

Weather Conditions

95°

Feels Like 106°

Sunny

76° 97° EXTREME HEAT

EXTREME HEAT

10

UV Index

Moderate

Air Quality

S 6 mph

Wind

0 in

rain

Today

Thu 7/2

97°

Highest Temperature

15%

Partly cloudy. A stray shower or thunderstorm is possible. High 97F. Winds S at 5 to 10 mph.

Tonight

Thu 7/2

75°

Lowest Temperature

9%

Some passing clouds. Low near 75F. Winds light and variable.

Tomorrow

Fri 7/3

94°

Highest Temperature

22%

Mostly sunny skies. A stray shower or thunderstorm is possible. High 94F. Winds SSW at 5 to 10 mph.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in O'Fallon

Hourly Weather Forecast & Temperature

2PM

15%

95°

Feels Like 106°

EXTREME HEAT

Partly Cloudy

S 6 mph

Wind

1017 mb

Pressure

50%

Humidity

9

UV Index

10mi

Visibility

36%

Cloud Cover

3PM

15%

95°

Feels Like 106°

EXTREME HEAT

Partly Cloudy

S 6 mph

Wind

1016 mb

Pressure

49%

Humidity

8

UV Index

10mi

Visibility

39%

Cloud Cover

4PM

15%

95°

Feels Like 106°

EXTREME HEAT

Partly Cloudy

S 6 mph

Wind

1016 mb

Pressure

49%

Humidity

5

UV Index

10mi

Visibility

39%

Cloud Cover

5PM

15%

93°

Feels Like 104°

EXTREME HEAT

Partly Cloudy

S 7 mph

Wind

1016 mb

Pressure

52%

Humidity

3

UV Index

10mi

Visibility

35%

Cloud Cover

6PM

2%

92°

Feels Like 103°

EXTREME HEAT

Mostly Sunny

S 7 mph

Wind

1015 mb

Pressure

54%

Humidity

1

UV Index

10mi

Visibility

22%

Cloud Cover

7PM

4%

91°

Feels Like 102°

EXTREME HEAT

Partly Cloudy

S 5 mph

Wind

1015 mb

Pressure

59%

Humidity

0

UV Index

10mi

Visibility

30%

Cloud Cover

8PM

5%

89°

Feels Like 100°

EXTREME HEAT

Partly Cloudy

S 4 mph

Wind

1015 mb

Pressure

65%

Humidity

0

UV Index

10mi

Visibility

44%

Cloud Cover

9PM

10%

86°

Feels Like 96°

EXTREME HEAT

Mostly Cloudy

SSE 4 mph

Wind

1016 mb

Pressure

70%

Humidity

0

UV Index

10mi

Visibility

62%

Cloud Cover

10PM

3%

85°

Feels Like 93°

EXTREME HEAT

Partly Cloudy

S 4 mph

Wind

1016 mb

Pressure

72%

Humidity

0

UV Index

10mi

Visibility

49%

Cloud Cover

11PM

3%

83°

Feels Like 91°

EXTREME HEAT

Partly Cloudy

S 4 mph

Wind

1016 mb

Pressure

74%

Humidity

0

UV Index

10mi

Visibility

53%

Cloud Cover

12AM

4%

82°

Feels Like 89°

EXTREME HEAT

Partly Cloudy

S 4 mph

Wind

1016 mb

Pressure

78%

Humidity

0

UV Index

10mi

Visibility

51%

Cloud Cover

1AM

5%

80°

Feels Like 86°

EXTREME HEAT

Partly Cloudy

SSW 3 mph

Wind

1017 mb

Pressure

82%

Humidity

0

UV Index

10mi

Visibility

33%

Cloud Cover

Thu 7/2

Thu

15%

76°

97°

Times of sun and clouds. Highs in the upper 90s and lows in the mid 70s.

107°

Feels Like

S 7 mph

Wind

50%

Humidity

9

UV Index

5:42 AM

Sunrise

8:32 PM

Sunset

Fri 7/3

Fri

22%

75°

94°

EXTREME HEAT

Plenty of sun. Highs in the mid 90s and lows in the mid 70s.

104°

Feels Like

SSW 6 mph

Wind

65%

Humidity

10

UV Index

5:42 AM

Sunrise

8:31 PM

Sunset

Sat 7/4

Sat

24%

74°

90°

EXTREME HEAT

Mix of sun and clouds. Highs in the low 90s and lows in the low 70s.

98°

Feels Like

SW 7 mph

Wind

68%

Humidity

9

UV Index

5:43 AM

Sunrise

8:31 PM

Sunset

Sun 7/5

Sun

41%

71°

89°

Morning showers and thunderstorms. Highs in the upper 80s and lows in the low 70s.

94°

Feels Like

NNW 6 mph

Wind

70%

Humidity

9

UV Index

5:43 AM

Sunrise

8:31 PM

Sunset

Mon 7/6

Mon

24%

70°

87°

Partly cloudy. Highs in the upper 80s and lows in the upper 60s.

90°

Feels Like

NNE 7 mph

Wind

69%

Humidity

10

UV Index

5:44 AM

Sunrise

8:31 PM

Sunset

Tue 7/7

Tue

24%

68°

87°

Partly cloudy. Highs in the upper 80s and lows in the upper 60s.

91°

Feels Like

NNE 5 mph

Wind

68%

Humidity

9

UV Index

5:44 AM

Sunrise

8:30 PM

Sunset

Wed 7/8

Wed

24%

69°

89°

Mix of sun and clouds. Highs in the upper 80s and lows in the low 70s.

94°

Feels Like

SE 4 mph

Wind

70%

Humidity

9

UV Index

5:45 AM

Sunrise

8:30 PM

Sunset

Thu 7/9

Thu

43%

71°

90°

Thunderstorms early. Highs in the low 90s and lows in the low 70s.

97°

Feels Like

SSW 7 mph

Wind

70%

Humidity

9

UV Index

5:46 AM

Sunrise

8:30 PM

Sunset

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Looking for homes in this area?

• 1455 Chambers Dr, O Fallon, MO 63366
• 64 Hickory Meadows Ct, O Fallon, MO 63366
• 101 Countryshire Dr, Lake Saint Louis, MO 63367

Sponsored by Redfin. Housing data supplied by Redfin independent of FOX Weather.

Latest Stories from Missouri

260M people trapped under oppressive heat dome, with scorching temps lasting through America's 250th birthday

The core of a life-threatening heat dome is smothering the eastern U.S. through the July 4 holiday weekend, bringing days of extreme heat to more than 260 million people, with some places expected to see historic temperatures.

Over 230M people to face brutal heat dome, life-threatening temperatures ahead of America's 250th birthday

Temperatures in the 90s are spreading across the Midwest and will reach the East Coast by Wednesday, when it will feel like 100 to 110 degrees for tens of millions of people as a life-threatening heat dome expands eastward ahead of America's 250th birthday.

Magnitude 3.5 earthquake jolts southern Illinois, felt by hundreds across multiple states

Residents across southern Illinois were rattled Monday morning after a magnitude 3.5 earthquake sent light shaking across four states.

4 dead as flash flooding slams Kentucky, triggering emergencies and evacuations

Thunderstorms and flash flooding are threatening the first half of the weekend for millions across parts of the Ohio Valley and East Coast. Those with outdoor plans could be dodging showers on both Saturday and Sunday ahead of a return to 90-degree weather by the middle of next week.

Load More Stories