Rock Island, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rock Island, a community in Colorado County, Texas.
Overnight
75°F
Patchy Fog
Patchy fog. Mostly clear, with a low around 75. South wind around 0 mph.
7-day forecast for Rock Island
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 75°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 99°F | Patchy Fog then Sunny | 0 to 10 mph S | 1% |
| Tuesday Night | 75°F | Mostly Clear | 0 to 10 mph S | 0% |
| Wednesday | 99°F | Sunny | 0 to 10 mph S | 3% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 10 mph S | 4% |
| Thursday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph S | 17% |
| Thursday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 17% |
| Friday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 22% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 22% |
| Saturday | 95°F | Sunny | 0 to 10 mph SE | 13% |
| Saturday Night | 74°F | Mostly Clear | 0 to 10 mph SE | 13% |
| Sunday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 19% |
| Sunday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph SE | 19% |
| Monday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph S | 18% |
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 Aug 4, 2026.