Katy, TX Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Katy, TX in one place.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 106. Southwest wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Katy, TX is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 8, 2026 12:32 PM CDT.
The active forecast window currently covers Jul 8 to Jul 14, 2026 for Katy, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 8 to Jul 14, 2026
- Latest sync
- Jul 8, 2026 12:32 PM CDT
- Forecast office
- HGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Katy
Thursday looks like the warmest upcoming period in Katy at 97 degrees F.
Tonight is the coolest period ahead with temperatures near 77 degrees F.
The strongest winds are forecast for Tonight at about 5 to 15 mph S.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 8, 2026 12:32 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- HGX
- Radar station
- KHGX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 77. Heat index values as high as 102. South wind 5 to 15 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Heat index values as high as 106. South wind 5 to 15 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 77. Heat index values as high as 103. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 7am. Partly sunny, with a high near 97. South wind 5 to 15 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. Chance of precipitation is 50%.
A chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 78. Chance of precipitation is 50%.
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 96. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Chance of precipitation is 40%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 96. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 77.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 8
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
96°F |
5 to 10 mph
SW
|
|
Tonight
Jul 8
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
77°F |
5 to 15 mph
S
|
|
Thursday
Jul 9
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
97°F |
5 to 15 mph
S
|
|
Thursday Night
Jul 9
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
77°F |
5 to 15 mph
S
|
|
Friday
Jul 10
|
Slight Chance Showers And Thunderstorms
|
97°F |
5 to 15 mph
S
|
|
Friday Night
Jul 10
|
Slight Chance Showers And Thunderstorms
|
79°F |
5 to 15 mph
SE
|
|
Saturday
Jul 11
|
Chance Showers And Thunderstorms
|
96°F |
0 to 10 mph
SE
|
|
Saturday Night
Jul 11
|
Chance Showers And Thunderstorms then Partly Cloudy
|
79°F |
0 to 10 mph
S
|
|
Sunday
Jul 12
|
Chance Showers And Thunderstorms
|
95°F |
0 to 10 mph
SE
|
|
Sunday Night
Jul 12
|
Chance Showers And Thunderstorms then Partly Cloudy
|
78°F |
0 to 10 mph
S
|
|
Monday
Jul 13
|
Chance Showers And Thunderstorms
|
96°F |
0 to 5 mph
S
|
|
Monday Night
Jul 13
|
Chance Showers And Thunderstorms
|
78°F |
0 to 5 mph
S
|
|
Tuesday
Jul 14
|
Chance Showers And Thunderstorms
|
96°F |
0 to 5 mph
SW
|
|
Tuesday Night
Jul 14
|
Chance Showers And Thunderstorms then Partly Cloudy
|
77°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Katy.
