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Severe thunderstorms threatening the Plains through Sunday. Get the forecast Chevron right
Potential tropical development in Gulf poses primary US threat before end of September. Click for latest Chevron right

Bay, MO

95°F
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4 PM

95°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 0%
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Intermittent clouds

RealFeel Shade™96°

WindSSW 6 mph

Air QualityPoor

Max UV Index3.2 (Moderate)

Wind Gusts12 mph

Humidity41%

Indoor Humidity41% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover50%

Visibility10 mi

Cloud Ceiling33400 ft

5 PM

95°
RealFeel® 99°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™96°

WindS 6 mph

Air QualityPoor

Max UV Index1.6 (Low)

Wind Gusts9 mph

Humidity40%

Indoor Humidity40% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

93°
RealFeel® 94°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™94°

WindSSE 6 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts7 mph

Humidity41%

Indoor Humidity41% (Humid)

Dew Point66° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

90°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™91°

WindSSE 6 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts6 mph

Humidity44%

Indoor Humidity44% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

88°
RealFeel® 89°
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.
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rain drop 0%
Chevron down
Mostly clear

WindS 5 mph

Air QualityFair

Wind Gusts13 mph

Humidity48%

Indoor Humidity48% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover24%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

85°
RealFeel® 85°
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.
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rain drop 0%
Chevron down
Mostly clear

WindS 5 mph

Air QualityFair

Wind Gusts13 mph

Humidity53%

Indoor Humidity53% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover13%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

82°
RealFeel® 82°
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
rain drop 0%
Chevron down
Clear

WindSSW 5 mph

Air QualityFair

Wind Gusts13 mph

Humidity58%

Indoor Humidity58% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover2%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

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

WindSSW 6 mph

Air QualityFair

Wind Gusts13 mph

Humidity64%

Indoor Humidity64% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover22%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near Bay:

  • O'Fallon, MO
  • St. Charles, MO
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