Cinco Ranch, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cinco Ranch, a community in Harris County, Texas.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 108. South wind 0 to 10 mph.
7-day forecast for Cinco Ranch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 0 to 10 mph S | 6% |
| Tonight | 78°F | Mostly Clear | 0 to 10 mph S | 9% |
| Wednesday | 99°F | Sunny | 0 to 10 mph S | 9% |
| Wednesday Night | 77°F | Mostly Clear | 0 to 10 mph S | 8% |
| Thursday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph S | 22% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 22% |
| Friday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 22% |
| Friday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph S | 22% |
| Saturday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 18% |
| Saturday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 18% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 17% |
| Sunday Night | 77°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph S | 17% |
| Monday | 95°F | Chance Showers And Thunderstorms | 0 to 10 mph S | 31% |
| Monday Night | 77°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph S | 31% |
Forecast source: National Weather Service (api.weather.gov) for Cinco Ranch (29.740, -95.761). Updated through the day.
Growing snapshot for Cinco Ranch
Last spring frost
Feb 2
First fall frost
Dec 11
Growing season
318 days
Hardiness zone
9b
More local growing data for Cinco Ranch: nearby ZIP 77450 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Houston Sugarland Mem, Tx (9.9 mi from Cinco Ranch). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.