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Extreme risk of severe weather, widespread destructive winds in the Plains into Sunday night. Click for details Chevron right

O'Fallon, IL

64°F
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O'Fallon

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O'Fallon, IL Weather
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Winter Center
Today Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities
Monday, June 9

Current Weather

1:18 AM

64°F
Mostly cloudy
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
RealFeel®
62°
Wind
W 3 mph
Wind Gusts
8 mph
Humidity
87%
Indoor Humidity
76% (Slightly Humid)
Dew Point
60° F
Pressure
↓ 29.79 in
Cloud Cover
89%
Visibility
10 mi
Cloud Ceiling
8800 ft

Day

6/9
81°Hi
RealFeel® 84°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
RealFeel Shade™ 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Partly sunny, pleasant and less humid

Max UV Index11 (Extreme)

AccuLumen Brightness Index™9 (Very Bright)

WindW 10 mph

Wind Gusts25 mph

Probability of Precipitation25%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover30%

Morning

Afternoon

Night

6/9
56°Lo
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
Clear; smoke from wildfires in Canada can create reduced air quality

WindW 6 mph

Wind Gusts15 mph

Probability of Precipitation1%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover1%

Evening

Overnight

Sun & Moon

14 hrs 48 mins
Rise 5:35 AM
Set 8:23 PM
Waxing Gibbous
Rise 7:24 PM
Set 4:36 AM

Temperature History

6/9
High
Low
Forecast
81°
56°
Average
86°
63°
Last Year
80°
64°
Record
99°
1953
45°
1978

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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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