Weir, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Weir, a city in Williamson County, Texas.
Overnight
49°F
Mostly Clear
Mostly clear, with a low around 49. North northwest wind around 5 mph.
7-day forecast for Weir
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Clear | 5 mph NNW | 0% |
| Wednesday | 72°F | Sunny | 0 to 5 mph NNW | 0% |
| Wednesday Night | 49°F | Clear | 0 to 5 mph SE | 0% |
| Thursday | 78°F | Sunny | 0 to 10 mph SSW | 3% |
| Thursday Night | 52°F | Partly Cloudy | 5 to 10 mph WNW | 10% |
| Friday | 71°F | Sunny | 10 to 15 mph N | 0% |
| Friday Night | 48°F | Partly Cloudy | 5 mph N | 1% |
| Saturday | 67°F | Partly Sunny | 5 to 10 mph N | 13% |
| Saturday Night | 46°F | Partly Cloudy | 0 to 5 mph N | 9% |
| Sunday | 68°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Sunday Night | 44°F | Mostly Clear | 0 to 5 mph NNW | 7% |
| Monday | 70°F | Sunny | 0 to 5 mph NNE | 3% |
| Monday Night | 46°F | Mostly Clear | 0 to 5 mph SSE | 3% |
| Tuesday | 73°F | Mostly Sunny | 0 to 5 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for Weir (30.677, -97.591). Updated through the day.
Growing snapshot for Weir
Last spring frost
Mar 6
First fall frost
Nov 24
Growing season
259 days
Hardiness zone
9a
More local growing data for Weir: nearby ZIP 78674 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Georgetown Lake, Tx (7.3 mi from Weir). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.