Rock Island, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rock Island, a community in Colorado County, Texas.
This Afternoon
96°F
Sunny
Sunny, with a high near 96. Heat index values as high as 103. East wind around 10 mph.
7-day forecast for Rock Island
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Sunny | 10 mph E | 2% |
| Tonight | 72°F | Mostly Clear | 0 to 10 mph SE | 3% |
| Saturday | 97°F | Sunny | 0 to 5 mph E | 1% |
| Saturday Night | 72°F | Clear | 0 to 10 mph SE | 0% |
| Sunday | 97°F | Sunny | 0 to 5 mph SE | 6% |
| Sunday Night | 74°F | Partly Cloudy | 0 to 5 mph E | 6% |
| Monday | 97°F | Mostly Sunny | 0 to 5 mph E | 10% |
| Monday Night | 74°F | Mostly Clear | 0 to 5 mph SE | 10% |
| Tuesday | 98°F | Sunny | 0 to 5 mph NE | 11% |
| Tuesday Night | 75°F | Mostly Clear | 0 to 5 mph E | 11% |
| Wednesday | 98°F | Sunny | 0 to 10 mph NE | 8% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 10 mph E | 8% |
| Thursday | 96°F | Mostly Sunny | 5 to 10 mph NE | 5% |
| Thursday Night | 73°F | Mostly Clear | 0 to 10 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Rock Island (29.514, -96.567). Updated through the day.
Growing snapshot for Rock Island
Last spring frost
Mar 9
First fall frost
Nov 20
Growing season
255 days
Hardiness zone
9a
More local growing data for Rock Island: nearby ZIP 77470 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Columbus, Tx (11.7 mi from Rock Island). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.