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Katy, TX

80°F
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Katy

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Katy, TX Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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2 AM

80°
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 0%
Chevron down
Mostly clear

Heat Index86°

WindSSW 8 mph

Air QualityFair

Wind Gusts9 mph

Humidity91%

Indoor Humidity91% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

3 AM

80°
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 0%
Chevron down
Mostly clear

Heat Index85°

WindSSW 8 mph

Air QualityFair

Wind Gusts8 mph

Humidity92%

Indoor Humidity92% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

4 AM

79°
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
Mostly clear

Heat Index81°

WindSW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity94%

Indoor Humidity94% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

79°
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
Mostly clear

Heat Index81°

WindSW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity95%

Indoor Humidity95% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

78°
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
Mostly clear

Heat Index80°

WindSW 7 mph

Air QualityFair

Wind Gusts7 mph

Humidity96%

Indoor Humidity95% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

77°
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
Mostly sunny

RealFeel Shade™88°

WindSW 7 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts7 mph

Humidity98%

Indoor Humidity95% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

79°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™87°

Heat Index84°

WindSW 7 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts8 mph

Humidity93%

Indoor Humidity93% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

82°
RealFeel® 96°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™91°

Heat Index92°

WindSW 8 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts12 mph

Humidity85%

Indoor Humidity85% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

86°
RealFeel® 100°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™94°

Heat Index97°

WindSW 8 mph

Air QualityFair

Max UV Index4.7 (Moderate)

Wind Gusts15 mph

Humidity78%

Indoor Humidity78% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

88°
RealFeel® 104°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 1%
Chevron down
Mostly sunny

RealFeel Shade™96°

Heat Index101°

WindSW 8 mph

Air QualityFair

Max UV Index7.6 (Very High)

Wind Gusts13 mph

Humidity69%

Indoor Humidity69% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

91°
RealFeel® 107°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 1%
Chevron down
Mostly sunny

RealFeel Shade™98°

Heat Index103°

WindSW 8 mph

Air QualityFair

Max UV Index10.5 (Very High)

Wind Gusts12 mph

Humidity61%

Indoor Humidity61% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

94°
RealFeel® 109°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. 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
Mostly sunny
alerts

Heat Advisory

1:00 PM Saturday - 7:00 PM Saturday

RealFeel Shade™99°

Heat Index105°

WindSW 8 mph

Air QualityFair

Max UV Index11.4 (Extreme)

Wind Gusts13 mph

Humidity54%

Indoor Humidity54% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

96°
RealFeel® 110°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. 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
Mostly sunny
alerts

Heat Advisory

1:00 PM Saturday - 7:00 PM Saturday

RealFeel Shade™100°

Heat Index106°

WindSW 8 mph

Air QualityFair

Max UV Index10.5 (Very High)

Wind Gusts12 mph

Humidity49%

Indoor Humidity49% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

97°
RealFeel® 109°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. 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
Mostly sunny
alerts

Heat Advisory

1:00 PM Saturday - 7:00 PM Saturday

RealFeel Shade™102°

Heat Index107°

WindSW 8 mph

Air QualityFair

Max UV Index7.6 (Very High)

Wind Gusts10 mph

Humidity46%

Indoor Humidity46% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

98°
RealFeel® 108°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. 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
alerts

Heat Advisory

1:00 PM Saturday - 7:00 PM Saturday

RealFeel Shade™103°

Heat Index108°

WindSW 7 mph

Air QualityFair

Max UV Index4.7 (Moderate)

Wind Gusts9 mph

Humidity43%

Indoor Humidity43% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

97°
RealFeel® 106°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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
Mostly sunny
alerts

Heat Advisory

1:00 PM Saturday - 7:00 PM Saturday

RealFeel Shade™102°

Heat Index107°

WindSW 7 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts8 mph

Humidity45%

Indoor Humidity45% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

96°
RealFeel® 104°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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
Mostly sunny
alerts

Heat Advisory

1:00 PM Saturday - 7:00 PM Saturday

RealFeel Shade™101°

Heat Index106°

WindW 7 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts7 mph

Humidity47%

Indoor Humidity47% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

94°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 5%
Chevron down
Mostly sunny

RealFeel Shade™101°

Heat Index104°

WindNW 7 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts7 mph

Humidity50%

Indoor Humidity50% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

92°
RealFeel® 98°
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
Intermittent clouds

RealFeel Shade™98°

Heat Index101°

WindWSW 7 mph

Air QualityPoor

Max UV Index0.0 (Low)

Wind Gusts7 mph

Humidity57%

Indoor Humidity57% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling21300 ft

9 PM

88°
RealFeel® 96°
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 51%
Chevron down
Mostly cloudy w/ t-storms

Heat Index101°

WindSSW 7 mph

Air QualityPoor

Wind Gusts7 mph

Humidity72%

Indoor Humidity72% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Rain0.09 in

Visibility5 mi

Cloud Ceiling4000 ft

10 PM

85°
RealFeel® 95°
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
Intermittent clouds

Heat Index96°

WindSSW 7 mph

Air QualityPoor

Wind Gusts9 mph

Humidity75%

Indoor Humidity75% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling4000 ft

11 PM

83°
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 15%
Chevron down
Intermittent clouds

Heat Index92°

WindSSW 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover50%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Katy

AccuWeather's hourly forecast for Katy provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 80° with a RealFeel® of 90°, mostly clear with a 0% 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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