Rock Island, TX Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 107. South wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 0 to 10 mph S | 1% |
| Tonight | 76°F | Mostly Clear | 0 to 10 mph S | 1% |
| Wednesday | 98°F | Sunny | 0 to 10 mph S | 5% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 10 mph S | 5% |
| Thursday | 97°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 18% |
| Thursday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 18% |
| Friday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 21% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 21% |
| Saturday | 95°F | Sunny | 0 to 10 mph SE | 13% |
| Saturday Night | 74°F | Mostly Clear | 0 to 10 mph SE | 13% |
| Sunday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 19% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph S | 19% |
| Monday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 20% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph S | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rock Island, TX
Last spring frost
Feb 21
First fall frost
Dec 1
Growing season
285 days
Hardiness zone
9a
Explore more for Rock Island, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Eagle Lake Resch Ctr, Tx (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.