Newcastle, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newcastle, a city in Young County, Texas.
Today
101°F
Sunny
Sunny, with a high near 101. Heat index values as high as 101. South wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Newcastle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 101°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 74°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Wednesday | 100°F | Sunny | 5 to 10 mph SSW | 0% |
| Wednesday Night | 76°F | Mostly Clear | 5 to 10 mph S | 0% |
| Thursday | 100°F | Sunny | 5 to 10 mph S | 2% |
| Thursday Night | 76°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Friday | 100°F | Sunny | 5 to 10 mph S | 5% |
| Friday Night | 75°F | Mostly Clear | 5 to 10 mph SSE | 5% |
| Saturday | 99°F | Sunny | 5 to 10 mph S | 4% |
| Saturday Night | 75°F | Mostly Clear | 5 to 10 mph SSE | 4% |
| Sunday | 99°F | Sunny | 5 to 10 mph S | 1% |
| Sunday Night | 75°F | Mostly Clear | 10 mph SSE | 1% |
| Monday | 99°F | Sunny | 5 to 10 mph S | 3% |
| Monday Night | 76°F | Mostly Clear | 10 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for Newcastle (33.196, -98.744). Updated through the day.
Growing snapshot for Newcastle
Last spring frost
Apr 1
First fall frost
Nov 5
Growing season
220 days
Hardiness zone
8a
More local growing data for Newcastle: nearby ZIP 76450 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Graham, Tx (6.5 mi from Newcastle). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.