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The U.S. fall foliage forecast is here! See how vibrant colors will be in your area this year. Chevron right
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O'Fallon, MO

64°F
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O'Fallon, MO Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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3 AM

61°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 37%
Chevron down
Cloudy

WindNNW 6 mph

Air QualityFair

Wind Gusts16 mph

Humidity84%

Indoor Humidity65% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling1700 ft

4 AM

59°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 33%
Chevron down
Cloudy

WindNNW 6 mph

Air QualityFair

Wind Gusts15 mph

Humidity92%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling4000 ft

5 AM

58°
RealFeel® 57°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 32%
Chevron down
Cloudy

WindNNW 6 mph

Air QualityFair

Wind Gusts14 mph

Humidity93%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling4800 ft

6 AM

57°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 32%
Chevron down
Cloudy

WindNNW 6 mph

Air QualityFair

Wind Gusts14 mph

Humidity93%

Indoor Humidity64% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling24200 ft

7 AM

56°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 21%
Chevron down
Cloudy

RealFeel Shade™55°

WindNNW 6 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts14 mph

Humidity93%

Indoor Humidity61% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling4000 ft

8 AM

58°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™56°

WindN 6 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts15 mph

Humidity85%

Indoor Humidity60% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

61°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™59°

WindN 6 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts16 mph

Humidity74%

Indoor Humidity58% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

64°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™62°

WindN 7 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts15 mph

Humidity65%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

66°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™64°

WindN 7 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts15 mph

Humidity57%

Indoor Humidity54% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

69°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™66°

WindNNW 7 mph

Air QualityFair

Max UV Index6.3 (High)

Wind Gusts15 mph

Humidity50%

Indoor Humidity50% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

71°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™68°

WindNNW 6 mph

Air QualityFair

Max UV Index7.0 (High)

Wind Gusts15 mph

Humidity45%

Indoor Humidity45% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

73°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™70°

WindWNW 7 mph

Air QualityFair

Max UV Index6.3 (High)

Wind Gusts15 mph

Humidity41%

Indoor Humidity41% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

74°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™71°

WindW 7 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts14 mph

Humidity40%

Indoor Humidity40% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

75°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™73°

WindWSW 7 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts14 mph

Humidity38%

Indoor Humidity38% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

74°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™71°

WindWSW 6 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts14 mph

Humidity41%

Indoor Humidity41% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

73°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™71°

WindSW 6 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts14 mph

Humidity44%

Indoor Humidity44% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

71°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™69°

WindSSW 6 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts14 mph

Humidity49%

Indoor Humidity49% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

68°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 6 mph

Air QualityFair

Wind Gusts14 mph

Humidity55%

Indoor Humidity55% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover14%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

65°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSE 5 mph

Air QualityFair

Wind Gusts13 mph

Humidity63%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover29%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

61°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindSSE 5 mph

Air QualityFair

Wind Gusts12 mph

Humidity70%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover40%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

58°
RealFeel® 57°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindSSE 6 mph

Air QualityFair

Wind Gusts12 mph

Humidity79%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover34%

Visibility10 mi

Cloud Ceiling30000 ft

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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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