O'Brien, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for O'Brien, a city in Haskell County, Texas.
Today
103°F
Sunny
Sunny. High near 103, with temperatures falling to around 100 in the afternoon. South wind 10 to 15 mph.
7-day forecast for O'Brien
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 103°F | Sunny | 10 to 15 mph S | 0% |
| Tonight | 77°F | Mostly Clear | 10 to 15 mph S | 0% |
| Wednesday | 101°F | Sunny | 10 to 15 mph SSW | 0% |
| Wednesday Night | 77°F | Mostly Clear | 10 to 15 mph S | 0% |
| Thursday | 100°F | Sunny | 10 to 15 mph SSW | 2% |
| Thursday Night | 77°F | Mostly Clear | 10 to 15 mph S | 2% |
| Friday | 100°F | Sunny | 10 mph SSW | 3% |
| Friday Night | 76°F | Mostly Clear | 10 mph S | 3% |
| Saturday | 99°F | Sunny | 5 to 10 mph SSW | 5% |
| Saturday Night | 76°F | Mostly Clear | 10 mph SSE | 5% |
| Sunday | 99°F | Sunny | 10 mph SSW | 2% |
| Sunday Night | 76°F | Mostly Clear | 15 mph SSE | 2% |
| Monday | 99°F | Sunny | 10 to 15 mph SSW | 1% |
| Monday Night | 76°F | Mostly Clear | 15 mph S | 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 Aug 4, 2026.