O'Brien, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for O'Brien, a city in Haskell County, Texas.
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. Northwest wind around 5 mph.
7-day forecast for O'Brien
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 5 mph NW | 0% |
| Wednesday | 70°F | Partly Sunny | 0 to 5 mph SSW | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 10 mph SSE | 0% |
| Thursday | 68°F | Sunny | 10 to 15 mph WNW | 0% |
| Thursday Night | 46°F | Mostly Clear | 5 to 10 mph NNW | 0% |
| Friday | 64°F | Sunny | 0 to 5 mph N | 0% |
| Friday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Saturday | 63°F | Mostly Sunny | 0 to 5 mph N | 4% |
| Saturday Night | 45°F | Mostly Clear | 0 to 5 mph SSW | 4% |
| Sunday | 67°F | Sunny | 0 to 5 mph WSW | 1% |
| Sunday Night | 46°F | Clear | 0 to 5 mph SSE | 0% |
| Monday | 70°F | Sunny | 5 to 10 mph SSW | 0% |
| Monday Night | 50°F | Mostly Clear | 5 mph SSW | 1% |
| Tuesday | 73°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for O'Brien (33.380, -99.844). Updated through the day.
Growing snapshot for O'Brien
Last spring frost
Mar 28
First fall frost
Nov 7
Growing season
225 days
Hardiness zone
8a
More local growing data for O'Brien: nearby ZIP 79539 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Haskell, Tx (16.1 mi from O'Brien). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.