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Northeast weather to feel more like Thanksgiving than Memorial Day. See the temp forecast. Chevron right

St Clair, MO

62°F
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St Clair

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St Clair, MO Weather
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Chevron right

3 AM

62°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 80%
Chevron down
Thunderstorms

WindW 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity95%

Indoor Humidity77% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.05 in

Visibility10 mi

Cloud Ceiling2400 ft

4 AM

61°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 78%
Chevron down
Thunderstorms

WindWNW 4 mph

Air QualityPoor

Wind Gusts5 mph

Humidity100%

Indoor Humidity79% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Rain0.04 in

Visibility10 mi

Cloud Ceiling1000 ft

5 AM

61°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindNW 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity100%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling1100 ft

6 AM

61°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 53%
Chevron down
Thunderstorms

RealFeel Shade™59°

WindNW 4 mph

Air QualityPoor

Max UV Index0.0 (Low)

Wind Gusts5 mph

Humidity97%

Indoor Humidity77% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover93%

Rain0.10 in

Visibility5 mi

Cloud Ceiling1400 ft

7 AM

63°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™64°

WindNNW 5 mph

Air QualityPoor

Max UV Index0.3 (Low)

Wind Gusts5 mph

Humidity94%

Indoor Humidity79% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1800 ft

8 AM

64°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™66°

WindNNW 5 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts6 mph

Humidity91%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling5600 ft

9 AM

67°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Showers

RealFeel Shade™66°

WindNNW 5 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts7 mph

Humidity86%

Indoor Humidity83% (Humid)

Dew Point63° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Rain0.02 in

Visibility8 mi

Cloud Ceiling6300 ft

10 AM

70°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™68°

WindNNW 5 mph

Air QualityPoor

Max UV Index1.5 (Low)

Wind Gusts8 mph

Humidity80%

Indoor Humidity80% (Humid)

Dew Point63° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling7100 ft

11 AM

72°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™71°

WindNNW 6 mph

Air QualityPoor

Max UV Index2.8 (Moderate)

Wind Gusts8 mph

Humidity73%

Indoor Humidity73% (Humid)

Dew Point63° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling14700 ft

12 PM

74°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™73°

WindNNW 7 mph

Air QualityPoor

Max UV Index5.1 (Moderate)

Wind Gusts9 mph

Humidity66%

Indoor Humidity66% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

76°
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 29%
Chevron down
Cloudy

RealFeel Shade™74°

WindN 7 mph

Air QualityPoor

Max UV Index5.7 (High)

Wind Gusts10 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

77°
RealFeel® 86°
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 20%
Chevron down
Partly sunny

RealFeel Shade™75°

WindN 7 mph

Air QualityPoor

Max UV Index9.7 (Very High)

Wind Gusts13 mph

Humidity57%

Indoor Humidity57% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

78°
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 20%
Chevron down
Partly sunny

RealFeel Shade™76°

WindN 7 mph

Air QualityPoor

Max UV Index7.3 (High)

Wind Gusts13 mph

Humidity55%

Indoor Humidity55% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

78°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Intermittent clouds

RealFeel Shade™76°

WindN 7 mph

Air QualityPoor

Max UV Index4.1 (Moderate)

Wind Gusts14 mph

Humidity54%

Indoor Humidity54% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

79°
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 20%
Chevron down
Partly sunny

RealFeel Shade™77°

WindN 7 mph

Air QualityPoor

Max UV Index3.3 (Moderate)

Wind Gusts13 mph

Humidity52%

Indoor Humidity52% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

77°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Partly sunny

RealFeel Shade™75°

WindNNE 6 mph

Air QualityPoor

Max UV Index2.0 (Low)

Wind Gusts10 mph

Humidity56%

Indoor Humidity56% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

76°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 13%
Chevron down
Partly sunny

RealFeel Shade™74°

WindNNE 6 mph

Air QualityPoor

Max UV Index1.1 (Low)

Wind Gusts9 mph

Humidity60%

Indoor Humidity60% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

72°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™71°

WindNE 5 mph

Air QualityPoor

Max UV Index0.2 (Low)

Wind Gusts6 mph

Humidity66%

Indoor Humidity66% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

69°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindE 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity72%

Indoor Humidity72% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

66°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindESE 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity79%

Indoor Humidity73% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

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

WindSE 4 mph

Air QualityPoor

Wind Gusts5 mph

Humidity86%

Indoor Humidity72% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

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 62° with a RealFeel® of 59°, thunderstorms with a 80% 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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World North America United States Missouri St Clair

Weather Near St Clair:

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