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 105. South wind 5 to 10 mph.
7-day forecast for Newcastle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 101°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 76°F | Partly Cloudy | 5 to 10 mph SSE | 5% |
| Sunday | 100°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SSW | 37% |
| Sunday Night | 69°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 58% |
| Monday | 94°F | Chance Showers And Thunderstorms | 0 to 5 mph NNE | 36% |
| Monday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NE | 21% |
| Tuesday | 89°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 21% |
| Tuesday Night | 64°F | Partly Cloudy | 5 to 10 mph ENE | 14% |
| Wednesday | 90°F | Slight Chance Rain Showers | 5 mph ENE | 17% |
| Wednesday Night | 66°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph E | 15% |
| Thursday | 91°F | Partly Sunny | 0 to 5 mph ESE | 8% |
| Thursday Night | 67°F | Mostly Cloudy | 0 to 5 mph ESE | 8% |
| Friday | 92°F | Partly Sunny | 0 to 5 mph SE | 8% |
| Friday Night | 67°F | Mostly Cloudy | 0 to 5 mph ESE | 10% |
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 Sep 19, 2026.