Brenham, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brenham, a city in Washington County, Texas.
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 103. South wind 5 to 10 mph.
7-day forecast for Brenham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 5 to 10 mph S | 1% |
| Tonight | 76°F | Mostly Clear | 5 to 10 mph S | 0% |
| Wednesday | 97°F | Mostly Sunny | 5 to 10 mph S | 2% |
| Wednesday Night | 76°F | Mostly Clear | 5 to 10 mph S | 1% |
| Thursday | 96°F | Sunny | 0 to 10 mph S | 7% |
| Thursday Night | 76°F | Mostly Clear | 5 to 10 mph SE | 7% |
| Friday | 94°F | Mostly Sunny | 0 to 10 mph S | 14% |
| Friday Night | 75°F | Partly Cloudy | 5 to 10 mph S | 10% |
| Saturday | 94°F | Sunny | 0 to 5 mph S | 8% |
| Saturday Night | 75°F | Mostly Clear | 0 to 5 mph S | 8% |
| Sunday | 94°F | Sunny | 0 to 10 mph SE | 10% |
| Sunday Night | 75°F | Partly Cloudy | 0 to 10 mph SE | 10% |
| Monday | 94°F | Mostly Sunny | 0 to 10 mph SE | 12% |
| Monday Night | 76°F | Partly Cloudy | 0 to 10 mph S | 12% |
Forecast source: National Weather Service (api.weather.gov) for Brenham (30.158, -96.396). Updated through the day.
Growing snapshot for Brenham
Last spring frost
Mar 2
First fall frost
Nov 30
Growing season
273 days
Hardiness zone
9a
More local growing data for Brenham: nearby ZIP 77833 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Brenham, Tx (3.3 mi from Brenham). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.