Round Rock, TX Weather & Growing Conditions
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. North northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 5 mph NNW | 0% |
| Wednesday | 73°F | Sunny | 0 to 5 mph N | 0% |
| Wednesday Night | 49°F | Clear | 0 mph | 0% |
| Thursday | 78°F | Sunny | 0 to 5 mph SSW | 3% |
| Thursday Night | 53°F | Partly Cloudy | 5 to 10 mph WNW | 9% |
| Friday | 71°F | Sunny | 5 to 15 mph N | 0% |
| Friday Night | 48°F | Partly Cloudy | 5 mph N | 1% |
| Saturday | 68°F | Partly Sunny | 5 to 10 mph N | 14% |
| Saturday Night | 47°F | Partly Cloudy | 0 to 5 mph N | 10% |
| Sunday | 68°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Sunday Night | 44°F | Mostly Clear | 0 to 5 mph NNW | 7% |
| Monday | 71°F | Sunny | 0 to 5 mph ENE | 3% |
| Monday Night | 46°F | Mostly Clear | 0 to 5 mph S | 3% |
| Tuesday | 73°F | Mostly Sunny | 0 to 5 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Round Rock, TX
Last spring frost
Mar 6
First fall frost
Nov 24
Growing season
259 days
Hardiness zone
9a
Explore more for Round Rock, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Georgetown Lake, Tx (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.