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St. Clair, MO

71°F
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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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Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

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9 AM

75°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Partly sunny

RealFeel Shade™74°

WindSSW 12 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts21 mph

Humidity76%

Indoor Humidity76% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

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 6%
Chevron down
Partly sunny

RealFeel Shade™78°

WindSSW 14 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts23 mph

Humidity69%

Indoor Humidity69% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

82°
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 7%
Chevron down
Partly sunny

RealFeel Shade™80°

Heat Index84°

WindSSW 15 mph

Air QualityPoor

Max UV Index7.7 (Very High)

Wind Gusts27 mph

Humidity62%

Indoor Humidity62% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

84°
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 7%
Chevron down
Mostly sunny

RealFeel Shade™82°

Heat Index87°

WindSSW 16 mph

Air QualityPoor

Max UV Index10.2 (Very High)

Wind Gusts32 mph

Humidity56%

Indoor Humidity56% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

87°
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 11%
Chevron down
Mostly sunny
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™84°

Heat Index89°

WindSSW 17 mph

Air QualityPoor

Max UV Index11.1 (Extreme)

Wind Gusts37 mph

Humidity51%

Indoor Humidity51% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

89°
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
Mostly sunny
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™86°

Heat Index91°

WindSW 17 mph

Air QualityPoor

Max UV Index10.2 (Very High)

Wind Gusts39 mph

Humidity48%

Indoor Humidity48% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover28%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

90°
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 19%
Chevron down
Partly sunny
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™88°

Heat Index93°

WindSW 17 mph

Air QualityPoor

Max UV Index7.7 (Very High)

Wind Gusts41 mph

Humidity46%

Indoor Humidity46% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

91°
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

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™89°

Heat Index95°

WindSW 17 mph

Air QualityPoor

Max UV Index4.9 (Moderate)

Wind Gusts43 mph

Humidity45%

Indoor Humidity45% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

90°
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 47%
Chevron down
Partly sunny
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™88°

Heat Index94°

WindSW 16 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts40 mph

Humidity48%

Indoor Humidity48% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

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

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™84°

Heat Index93°

WindWSW 16 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts37 mph

Humidity67%

Indoor Humidity67% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Rain0.20 in

Visibility3 mi

Cloud Ceiling30000 ft

7 PM

84°
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 47%
Chevron down
Partly sunny
alerts

Wind Advisory

1:00 PM Wednesday - 8:00 PM Wednesday

RealFeel Shade™87°

Heat Index90°

WindWSW 15 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts32 mph

Humidity71%

Indoor Humidity71% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

81°
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 49%
Chevron down
Cloudy

RealFeel Shade™82°

Heat Index85°

WindWSW 13 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts30 mph

Humidity69%

Indoor Humidity69% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling13600 ft

9 PM

81°
RealFeel® 83°
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 49%
Chevron down
Cloudy

Heat Index84°

WindWSW 10 mph

Air QualityFair

Wind Gusts25 mph

Humidity71%

Indoor Humidity71% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling12600 ft

10 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 56%
Chevron down
Thunderstorms

WindWSW 9 mph

Air QualityFair

Wind Gusts20 mph

Humidity78%

Indoor Humidity78% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

11 PM

75°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

WindWSW 8 mph

Air QualityFair

Wind Gusts16 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling15700 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 75° with a RealFeel® of 77°, partly sunny with a 5% 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:

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  • St. Charles, MO
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