Mertzon, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mertzon, a city in Irion County, Texas.
Today
98°F
Sunny
Sunny, with a high near 98. South wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast for Mertzon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 10 to 15 mph S | 0% |
| Tonight | 73°F | Clear | 5 to 15 mph SSE | 0% |
| Wednesday | 96°F | Sunny | 10 to 15 mph S | 0% |
| Wednesday Night | 73°F | Mostly Clear | 5 to 15 mph SSE | 0% |
| Thursday | 97°F | Sunny | 10 to 15 mph S | 0% |
| Thursday Night | 73°F | Mostly Clear | 10 mph SSE | 0% |
| Friday | 97°F | Sunny | 10 mph S | 1% |
| Friday Night | 72°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Saturday | 95°F | Sunny | 5 to 10 mph S | 1% |
| Saturday Night | 71°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Sunday | 95°F | Sunny | 10 mph S | 1% |
| Sunday Night | 71°F | Mostly Clear | 10 mph S | 1% |
| Monday | 96°F | Sunny | 10 to 15 mph S | 1% |
| Monday Night | 72°F | Mostly Clear | 10 to 15 mph SSE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Mertzon (31.262, -100.821). Updated through the day.
Growing snapshot for Mertzon
Last spring frost
Apr 1
First fall frost
Nov 4
Growing season
215 days
Hardiness zone
8a
More local growing data for Mertzon: nearby ZIP 76941 weather · frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Mertzon 12Nnw, Tx (13.2 mi from Mertzon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.