Round Rock, TX Weather & Growing Conditions
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 100. South southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 5 mph SSE | 0% |
| Tonight | 75°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny | 5 mph S | 0% |
| Sunday Night | 76°F | Partly Cloudy | 5 mph SSE | 7% |
| Monday | 98°F | Sunny | 0 to 5 mph SSE | 14% |
| Monday Night | 76°F | Mostly Clear | 5 mph SSE | 14% |
| Tuesday | 97°F | Sunny | 0 to 10 mph NNE | 14% |
| Tuesday Night | 75°F | Partly Cloudy | 0 to 10 mph E | 14% |
| Wednesday | 96°F | Mostly Sunny | 5 to 10 mph NE | 10% |
| Wednesday Night | 75°F | Partly Cloudy | 0 to 10 mph ESE | 3% |
| Thursday | 96°F | Mostly Sunny | 0 to 10 mph ENE | 3% |
| Thursday Night | 73°F | Partly Cloudy | 0 to 10 mph ESE | 3% |
| Friday | 95°F | Mostly Sunny | 0 to 10 mph ENE | 3% |
| Friday Night | 73°F | Partly Cloudy | 0 to 10 mph ESE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Round Rock, TX
Last spring frost
Mar 11
First fall frost
Nov 20
Growing season
254 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, Austin Great Hills, Tx (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.