Marathon, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marathon, a community in Brewster County, Texas.
This Afternoon
70°F
Sunny
Sunny, with a high near 70. North wind around 5 mph.
7-day forecast for Marathon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 5 mph N | 0% |
| Tonight | 47°F | Mostly Clear | 0 to 5 mph N | 0% |
| Wednesday | 73°F | Sunny | 0 to 10 mph SE | 0% |
| Wednesday Night | 52°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Thursday | 71°F | Sunny | 5 to 15 mph N | 0% |
| Thursday Night | 46°F | Mostly Clear | 5 to 10 mph N | 0% |
| Friday | 67°F | Mostly Sunny | 5 mph NE | 0% |
| Friday Night | 47°F | Mostly Cloudy then Chance Rain Showers | 0 to 5 mph E | 39% |
| Saturday | 62°F | Chance Rain Showers | 5 to 10 mph NE | 26% |
| Saturday Night | 44°F | Slight Chance Rain Showers | 0 to 10 mph NE | 17% |
| Sunday | 63°F | Mostly Sunny | 5 mph E | 8% |
| Sunday Night | 43°F | Mostly Clear | 0 to 5 mph N | 3% |
| Monday | 68°F | Sunny | 0 to 5 mph SW | 2% |
| Monday Night | 46°F | Partly Cloudy | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Marathon (30.221, -103.237). Updated through the day.
Growing snapshot for Marathon
Last spring frost
Apr 7
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
8b
More local growing data for Marathon: nearby ZIP 79842 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Marathon, Tx (19.2 mi from Marathon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.