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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

St. Charles, MO

73°F
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St. Charles

Missouri

73°
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St. Charles, MO Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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10 AM

76°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™72°

WindSW 14 mph

Air QualityPoor

Max UV Index3.1 (Moderate)

Wind Gusts23 mph

Humidity54%

Indoor Humidity54% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling33000 ft

11 AM

80°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™77°

WindSW 15 mph

Air QualityPoor

Max UV Index4.3 (Moderate)

Wind Gusts25 mph

Humidity48%

Indoor Humidity48% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

12 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.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™81°

WindSW 16 mph

Air QualityPoor

Max UV Index5.2 (Moderate)

Wind Gusts27 mph

Humidity41%

Indoor Humidity41% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

88°
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.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™84°

WindSW 17 mph

Air QualityPoor

Max UV Index5.8 (High)

Wind Gusts29 mph

Humidity37%

Indoor Humidity37% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover3%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

91°
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 4%
Chevron down
Sunny

RealFeel Shade™87°

WindSW 17 mph

Air QualityPoor

Max UV Index5.2 (Moderate)

Wind Gusts30 mph

Humidity34%

Indoor Humidity34% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover2%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

93°
RealFeel® 92°
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 4%
Chevron down
Sunny

RealFeel Shade™89°

WindSW 17 mph

Air QualityPoor

Max UV Index4.3 (Moderate)

Wind Gusts30 mph

Humidity31%

Indoor Humidity31% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover5%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

93°
RealFeel® 92°
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 3%
Chevron down
Mostly sunny

RealFeel Shade™89°

WindSW 17 mph

Air QualityPoor

Max UV Index3.1 (Moderate)

Wind Gusts31 mph

Humidity31%

Indoor Humidity31% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover18%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

95°
RealFeel® 93°
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™91°

WindSW 15 mph

Air QualityPoor

Max UV Index2.0 (Low)

Wind Gusts27 mph

Humidity29%

Indoor Humidity29% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover41%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

92°
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.
LEARN MORE
rain drop 2%
Chevron down
Intermittent clouds

RealFeel Shade™89°

WindSW 12 mph

Air QualityPoor

Max UV Index0.8 (Low)

Wind Gusts22 mph

Humidity33%

Indoor Humidity33% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling22700 ft

7 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
Cloudy

RealFeel Shade™84°

WindSW 10 mph

Air QualityPoor

Max UV Index0.0 (Low)

Wind Gusts17 mph

Humidity38%

Indoor Humidity38% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling19000 ft

8 PM

84°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindWSW 9 mph

Air QualityPoor

Wind Gusts10 mph

Humidity44%

Indoor Humidity44% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling16200 ft

9 PM

80°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindW 9 mph

Air QualityPoor

Wind Gusts10 mph

Humidity49%

Indoor Humidity49% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling13300 ft

10 PM

76°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 61%
Chevron down
Thunderstorms

WindWNW 9 mph

Air QualityPoor

Wind Gusts16 mph

Humidity70%

Indoor Humidity70% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Rain0.26 in

Visibility3 mi

Cloud Ceiling2000 ft

11 PM

71°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 28%
Chevron down
Cloudy

WindNNW 13 mph

Air QualityPoor

Wind Gusts17 mph

Humidity72%

Indoor Humidity72% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling2000 ft

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World North America United States Missouri St. Charles

Weather Near St. Charles:

  • O'Fallon, MO
  • Springfield, IL
  • St. Louis, MO
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