Spring Branch, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Spring Branch, a city in Comal County, Texas.
Today
97°F
Mostly Sunny
Mostly sunny, with a high near 97. Heat index values as high as 102. South wind 0 to 5 mph.
7-day forecast for Spring Branch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 97°F | Mostly Sunny | 0 to 5 mph S | 1% |
| Tonight | 72°F | Mostly Clear | 5 mph S | 1% |
| Sunday | 97°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Sunday Night | 73°F | Partly Cloudy | 0 to 5 mph SSE | 13% |
| Monday | 97°F | Sunny | 0 to 5 mph SSE | 13% |
| Monday Night | 73°F | Mostly Clear | 0 to 5 mph SE | 13% |
| Tuesday | 96°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 10 mph ENE | 16% |
| Tuesday Night | 72°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 18% |
| Wednesday | 96°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 10 mph ENE | 18% |
| Wednesday Night | 72°F | Partly Cloudy | 0 to 10 mph ESE | 8% |
| Thursday | 95°F | Mostly Sunny | 0 to 10 mph ENE | 8% |
| Thursday Night | 71°F | Partly Cloudy | 0 to 5 mph ESE | 5% |
| Friday | 95°F | Mostly Sunny | 0 to 10 mph ENE | 5% |
| Friday Night | 70°F | Partly Cloudy | 0 to 5 mph ESE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Spring Branch (29.876, -98.409). Updated through the day.
Growing snapshot for Spring Branch
Last spring frost
Mar 1
First fall frost
Dec 1
Growing season
276 days
Hardiness zone
8b
More local growing data for Spring Branch: nearby ZIP 78070 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Canyon Dam, Tx (12.9 mi from Spring Branch). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.