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St. Clair, MO

78°F
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St. Clair

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

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11 AM

76°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 43%
Chevron down
Cloudy

RealFeel Shade™74°

WindNW 7 mph

Air QualityFair

Max UV Index3.0 (Moderate)

Wind Gusts8 mph

Humidity53%

Indoor Humidity53% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling14700 ft

12 PM

77°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™74°

WindNW 8 mph

Air QualityFair

Max UV Index4.2 (Moderate)

Wind Gusts9 mph

Humidity52%

Indoor Humidity52% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling14700 ft

1 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

RealFeel Shade™72°

WindNW 9 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts10 mph

Humidity52%

Indoor Humidity52% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

2 PM

79°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

RealFeel Shade™76°

WindNNW 9 mph

Air QualityFair

Max UV Index5.0 (Moderate)

Wind Gusts13 mph

Humidity51%

Indoor Humidity51% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling14700 ft

3 PM

77°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

RealFeel Shade™74°

WindNNW 10 mph

Air QualityFair

Max UV Index4.3 (Moderate)

Wind Gusts16 mph

Humidity54%

Indoor Humidity54% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover77%

Visibility10 mi

Cloud Ceiling14700 ft

4 PM

76°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Mostly cloudy w/ t-storms

RealFeel Shade™70°

WindNNW 9 mph

Air QualityFair

Max UV Index2.1 (Low)

Wind Gusts18 mph

Humidity57%

Indoor Humidity57% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

5 PM

75°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 39%
Chevron down
Partly sunny

RealFeel Shade™72°

WindNNW 9 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts17 mph

Humidity60%

Indoor Humidity60% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover48%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

74°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 33%
Chevron down
Partly sunny

RealFeel Shade™71°

WindNNW 8 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts14 mph

Humidity63%

Indoor Humidity63% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover32%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

73°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 36%
Chevron down
Mostly sunny

RealFeel Shade™70°

WindNNW 7 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts12 mph

Humidity65%

Indoor Humidity65% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

69°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly sunny

RealFeel Shade™68°

WindNW 5 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts9 mph

Humidity74%

Indoor Humidity74% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover28%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

66°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Partly cloudy w/ showers

WindNW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity82%

Indoor Humidity77% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover37%

Rain0.02 in

Visibility6 mi

Cloud Ceiling30000 ft

10 PM

63°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Partly cloudy

WindNW 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity90%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover41%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

61°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 33%
Chevron down
Partly cloudy

WindNW 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity97%

Indoor Humidity75% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover32%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for St. Clair

AccuWeather's hourly forecast for St. Clair provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 76° with a RealFeel® of 78°, cloudy with a 43% 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. Clair:

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