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Hurricane season starts in 67 days. Here's what AccuWeather experts are saying about the forecast. Chevron right
Thursday severe weather threat predicted in 6 states. See the latest forecast. Chevron right

Herculaneum, MO

95°F
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Herculaneum, MO Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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6 PM

93°
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 2%
Chevron down
Partly sunny

RealFeel Shade™90°

WindSW 12 mph

Air QualityPoor

Max UV Index1.1 (Low)

Wind Gusts21 mph

Humidity34%

Indoor Humidity34% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

90°
RealFeel® 88°
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 3%
Chevron down
Intermittent clouds

RealFeel Shade™88°

WindSW 10 mph

Air QualityPoor

Max UV Index0.1 (Low)

Wind Gusts16 mph

Humidity36%

Indoor Humidity36% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover66%

Visibility10 mi

Cloud Ceiling19000 ft

8 PM

87°
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
rain drop 5%
Chevron down
Partly cloudy

WindSW 12 mph

Air QualityPoor

Wind Gusts22 mph

Humidity40%

Indoor Humidity40% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

83°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Partly cloudy

WindSW 12 mph

Air QualityPoor

Wind Gusts22 mph

Humidity46%

Indoor Humidity46% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

79°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 6%
Chevron down
Partly cloudy

WindSW 13 mph

Air QualityPoor

Wind Gusts23 mph

Humidity52%

Indoor Humidity52% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

76°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Partly cloudy

WindWSW 14 mph

Air QualityFair

Wind Gusts17 mph

Humidity54%

Indoor Humidity54% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

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World North America United States Missouri Herculaneum

Weather Near Herculaneum:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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