Mertzon, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mertzon, a city in Irion County, Texas.
This Afternoon
70°F
Sunny
Sunny, with a high near 70. North northwest wind around 5 mph.
7-day forecast for Mertzon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 5 mph NNW | 0% |
| Tonight | 46°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Wednesday | 73°F | Sunny | 0 to 10 mph S | 0% |
| Wednesday Night | 53°F | Clear | 5 to 10 mph S | 0% |
| Thursday | 74°F | Sunny | 10 mph W | 0% |
| Thursday Night | 45°F | Mostly Clear | 0 to 5 mph N | 0% |
| Friday | 67°F | Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 45°F | Mostly Cloudy | 0 mph | 8% |
| Saturday | 64°F | Slight Chance Rain Showers | 0 to 5 mph NE | 18% |
| Saturday Night | 43°F | Partly Cloudy | 0 to 5 mph N | 11% |
| Sunday | 66°F | Sunny | 0 to 5 mph N | 7% |
| Sunday Night | 43°F | Mostly Clear | 0 mph | 3% |
| Monday | 69°F | Sunny | 0 to 5 mph SSW | 2% |
| Monday Night | 46°F | Mostly Clear | 5 mph S | 1% |
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 Nov 4, 2026.