Rock Island, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rock Island, a community in Colorado County, Texas.
Today
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 73 in the afternoon. North wind around 5 mph.
7-day forecast for Rock Island
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 5 mph N | 0% |
| Tonight | 53°F | Mostly Clear | 0 mph | 0% |
| Thursday | 80°F | Mostly Sunny | 5 mph E | 5% |
| Thursday Night | 60°F | Partly Cloudy | 0 to 10 mph S | 11% |
| Friday | 77°F | Sunny | 5 to 10 mph N | 3% |
| Friday Night | 56°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Saturday | 73°F | Partly Sunny | 5 to 10 mph NE | 7% |
| Saturday Night | 53°F | Slight Chance Rain Showers | 5 to 10 mph N | 22% |
| Sunday | 68°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 17% |
| Sunday Night | 48°F | Mostly Clear | 0 to 5 mph N | 5% |
| Monday | 70°F | Sunny | 0 to 5 mph NE | 4% |
| Monday Night | 49°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 73°F | Mostly Sunny | 0 to 5 mph E | 4% |
| Tuesday Night | 51°F | Partly Cloudy | 0 mph | 9% |
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 Nov 4, 2026.