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St. Charles, MO

62°F
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St. Charles

Missouri

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St. Charles, MO Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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6 AM

60°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 1%
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Intermittent clouds
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™58°

WindSSE 8 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts8 mph

Humidity96%

Indoor Humidity72% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover61%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

63°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 2%
Chevron down
Intermittent clouds
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™61°

WindSSE 8 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts9 mph

Humidity92%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

67°
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
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Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™64°

WindS 12 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts14 mph

Humidity91%

Indoor Humidity86% (Humid)

Dew Point64° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

71°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
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Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™69°

WindSSW 14 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts16 mph

Humidity84%

Indoor Humidity84% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

76°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 6%
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Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™74°

WindSSW 16 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts18 mph

Humidity74%

Indoor Humidity74% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

81°
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 7%
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Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™79°

Heat Index83°

WindSSW 18 mph

Air QualityPoor

Max UV Index7.6 (Very High)

Wind Gusts22 mph

Humidity64%

Indoor Humidity64% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

84°
RealFeel® 87°
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 7%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™81°

Heat Index86°

WindSSW 20 mph

Air QualityPoor

Max UV Index10.1 (Very High)

Wind Gusts29 mph

Humidity56%

Indoor Humidity56% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

86°
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 11%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™83°

Heat Index89°

WindSSW 22 mph

Air QualityPoor

Max UV Index11.1 (Extreme)

Wind Gusts39 mph

Humidity51%

Indoor Humidity51% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

89°
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 19%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™86°

Heat Index91°

WindSW 21 mph

Air QualityUnhealthy

Max UV Index10.1 (Very High)

Wind Gusts39 mph

Humidity47%

Indoor Humidity47% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

90°
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 19%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™87°

Heat Index93°

WindSW 20 mph

Air QualityPoor

Max UV Index7.6 (Very High)

Wind Gusts43 mph

Humidity44%

Indoor Humidity44% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

92°
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 24%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™89°

Heat Index95°

WindSW 20 mph

Air QualityPoor

Max UV Index4.9 (Moderate)

Wind Gusts45 mph

Humidity42%

Indoor Humidity42% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

90°
RealFeel® 90°
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 47%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™88°

Heat Index93°

WindSW 20 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts33 mph

Humidity47%

Indoor Humidity47% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

86°
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 51%
Chevron down
Partly sunny w/ t-storms
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™83°

Heat Index93°

WindWSW 18 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts23 mph

Humidity66%

Indoor Humidity66% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Rain0.20 in

Visibility3 mi

Cloud Ceiling30000 ft

7 PM

81°
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 43%
Chevron down
Partly sunny
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™84°

Heat Index87°

WindWSW 18 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts22 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

80°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 56%
Chevron down
Thunderstorms
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

RealFeel Shade™79°

Heat Index84°

WindWSW 15 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts20 mph

Humidity79%

Indoor Humidity79% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

9 PM

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

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

Heat Index80°

WindWSW 12 mph

Air QualityExcellent

Wind Gusts22 mph

Humidity79%

Indoor Humidity79% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling14700 ft

10 PM

77°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 44%
Chevron down
Cloudy
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

WindWSW 9 mph

Air QualityExcellent

Wind Gusts23 mph

Humidity83%

Indoor Humidity83% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling14700 ft

11 PM

76°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy
alerts

Flood Warning

1:00 PM Tuesday - 1:00 PM Thursday

WindWSW 9 mph

Air QualityExcellent

Wind Gusts20 mph

Humidity86%

Indoor Humidity86% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling19800 ft

Hourly Weather Forecast for St. Charles

AccuWeather's hourly forecast for St. Charles provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 60° with a RealFeel® of 58°, intermittent clouds with a 1% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near St. Charles:

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