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Katy, TX

79°F
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Katy

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79°
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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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1 AM

79°
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 16%
Chevron down
Mostly clear
alerts

Tropical Cyclone Statement

10:59 AM Tuesday - 3:30 AM Thursday

Heat Index81°

WindS 9 mph

Air QualityFair

Wind Gusts16 mph

Humidity90%

Indoor Humidity90% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling33300 ft

2 AM

79°
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 cloudy
alerts

Tropical Cyclone Statement

10:59 AM Tuesday - 3:30 AM Thursday

Heat Index81°

WindS 13 mph

Air QualityFair

Wind Gusts18 mph

Humidity92%

Indoor Humidity92% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

3 AM

79°
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 7%
Chevron down
Partly cloudy
alerts

Tropical Cyclone Statement

10:59 AM Tuesday - 3:30 AM Thursday

Heat Index84°

WindS 8 mph

Air QualityFair

Wind Gusts12 mph

Humidity97%

Indoor Humidity95% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

4 AM

79°
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 7%
Chevron down
Partly cloudy

Heat Index84°

WindS 8 mph

Air QualityFair

Wind Gusts12 mph

Humidity98%

Indoor Humidity95% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

79°
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 7%
Chevron down
Partly cloudy

Heat Index84°

WindS 8 mph

Air QualityFair

Wind Gusts10 mph

Humidity98%

Indoor Humidity95% (Dangerously Humid)

Dew Point79° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

79°
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 7%
Chevron down
Partly cloudy

Heat Index85°

WindS 8 mph

Air QualityFair

Wind Gusts10 mph

Humidity98%

Indoor Humidity95% (Dangerously Humid)

Dew Point79° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

81°
RealFeel® 94°
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 5%
Chevron down
Partly sunny

RealFeel Shade™94°

Heat Index90°

WindS 8 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts10 mph

Humidity96%

Indoor Humidity95% (Dangerously Humid)

Dew Point79° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

83°
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
Intermittent clouds

RealFeel Shade™96°

Heat Index95°

WindS 9 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts13 mph

Humidity90%

Indoor Humidity90% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling2500 ft

9 AM

85°
RealFeel® 99°
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
Intermittent clouds

RealFeel Shade™94°

Heat Index100°

WindS 10 mph

Air QualityPoor

Max UV Index1.6 (Low)

Wind Gusts16 mph

Humidity86%

Indoor Humidity86% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover67%

Visibility10 mi

Cloud Ceiling3100 ft

10 AM

88°
RealFeel® 103°
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 0%
Chevron down
Intermittent clouds

RealFeel Shade™97°

Heat Index105°

WindS 10 mph

Air QualityPoor

Max UV Index2.4 (Low)

Wind Gusts20 mph

Humidity80%

Indoor Humidity80% (Dangerously Humid)

Dew Point81° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling3700 ft

11 AM

90°
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 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™99°

Heat Index109°

WindS 12 mph

Air QualityPoor

Max UV Index4.4 (Moderate)

Wind Gusts20 mph

Humidity75%

Indoor Humidity75% (Dangerously Humid)

Dew Point81° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover61%

Visibility10 mi

Cloud Ceiling4800 ft

12 PM

91°
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 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™101°

Heat Index111°

WindS 12 mph

Air QualityPoor

Max UV Index6.4 (High)

Wind Gusts20 mph

Humidity72%

Indoor Humidity72% (Dangerously Humid)

Dew Point81° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling5900 ft

1 PM

93°
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 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™102°

Heat Index113°

WindS 12 mph

Air QualityPoor

Max UV Index7.3 (High)

Wind Gusts21 mph

Humidity68%

Indoor Humidity68% (Dangerously Humid)

Dew Point81° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling7100 ft

2 PM

94°
RealFeel® 111°
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 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™103°

Heat Index115°

WindS 13 mph

Air QualityPoor

Max UV Index6.9 (High)

Wind Gusts22 mph

Humidity66%

Indoor Humidity66% (Dangerously Humid)

Dew Point81° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover64%

Visibility10 mi

Cloud Ceiling11400 ft

3 PM

95°
RealFeel® 111°
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 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™104°

Heat Index116°

WindS 13 mph

Air QualityPoor

Max UV Index5.3 (Moderate)

Wind Gusts23 mph

Humidity63%

Indoor Humidity63% (Dangerously Humid)

Dew Point81° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling15700 ft

4 PM

96°
RealFeel® 111°
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 0%
Chevron down
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™105°

Heat Index117°

WindS 13 mph

Air QualityPoor

Max UV Index3.8 (Moderate)

Wind Gusts24 mph

Humidity60%

Indoor Humidity60% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling20000 ft

5 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 0%
Chevron down
Partly sunny
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™103°

Heat Index114°

WindS 13 mph

Air QualityPoor

Max UV Index3.3 (Moderate)

Wind Gusts25 mph

Humidity63%

Indoor Humidity63% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover47%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

93°
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 0%
Chevron down
Mostly sunny
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™102°

Heat Index112°

WindSSE 12 mph

Air QualityPoor

Max UV Index2.0 (Low)

Wind Gusts25 mph

Humidity67%

Indoor Humidity67% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover27%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

91°
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 0%
Chevron down
Mostly sunny
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™104°

Heat Index109°

WindSSE 12 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts23 mph

Humidity71%

Indoor Humidity71% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover19%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

89°
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 0%
Chevron down
Partly sunny
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

RealFeel Shade™101°

Heat Index106°

WindSSE 12 mph

Air QualityPoor

Max UV Index0.0 (Low)

Wind Gusts21 mph

Humidity75%

Indoor Humidity75% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

87°
RealFeel® 99°
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
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

Heat Index102°

WindSSE 10 mph

Air QualityPoor

Wind Gusts18 mph

Humidity80%

Indoor Humidity80% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling11700 ft

10 PM

84°
RealFeel® 97°
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
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

Heat Index98°

WindSE 9 mph

Air QualityPoor

Wind Gusts16 mph

Humidity86%

Indoor Humidity86% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2600 ft

11 PM

84°
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
Intermittent clouds
alerts

Heat Advisory

11:00 AM Thursday - 10:00 PM Friday

Heat Index96°

WindSE 9 mph

Air QualityPoor

Wind Gusts13 mph

Humidity89%

Indoor Humidity89% (Dangerously Humid)

Dew Point80° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2400 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 79° with a RealFeel® of 86°, mostly clear with a 16% 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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