Round Mountain, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Mountain, a town in Blanco County, Texas.
Tonight
52°F
Clear
Clear, with a low around 52. South southeast wind 0 to 5 mph.
7-day forecast for Round Mountain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Clear | 0 to 5 mph SSE | 0% |
| Thursday | 78°F | Sunny | 0 to 5 mph SSW | 1% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 10 mph NW | 0% |
| Friday | 68°F | Sunny | 5 to 15 mph N | 0% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 64°F | Mostly Cloudy then Chance Rain Showers | 5 mph NNE | 25% |
| Saturday Night | 48°F | Chance Showers And Thunderstorms | 5 mph NNE | 46% |
| Sunday | 61°F | Chance Rain Showers | 0 to 5 mph N | 43% |
| Sunday Night | 46°F | Chance Rain Showers | 0 mph | 25% |
| Monday | 63°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 15% |
| Monday Night | 46°F | Partly Cloudy | 0 mph | 8% |
| Tuesday | 67°F | Mostly Sunny | 0 mph | 5% |
| Tuesday Night | 49°F | Partly Cloudy | 0 mph | 3% |
| Veterans Day | 71°F | Mostly Sunny | 0 mph | 3% |
Forecast source: National Weather Service (api.weather.gov) for Round Mountain (30.394, -98.361). Updated through the day.
Growing snapshot for Round Mountain
Last spring frost
Mar 22
First fall frost
Nov 9
Growing season
235 days
Hardiness zone
8b
More local growing data for Round Mountain: nearby ZIP 78663 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Johnson City 2N, Tx (9.9 mi from Round Mountain). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.