New Castle, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Castle, a town in Botetourt County, Virginia.
This Afternoon
86°F
Mostly Sunny
Mostly sunny, with a high near 86. Northwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for New Castle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Mostly Sunny | 6 mph NW | 11% |
| Tonight | 68°F | Chance Rain Showers | 0 to 5 mph N | 34% |
| Saturday | 78°F | Chance Rain Showers | 0 to 3 mph E | 35% |
| Saturday Night | 66°F | Mostly Cloudy | 0 to 5 mph SE | 8% |
| Sunday | 82°F | Mostly Cloudy then Showers And Thunderstorms Likely | 2 mph SW | 63% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 2 mph W | 63% |
| Monday | 85°F | Showers And Thunderstorms | 2 mph NE | 86% |
| Monday Night | 64°F | Showers And Thunderstorms | 5 mph E | 86% |
| Tuesday | 72°F | Showers And Thunderstorms | 2 to 6 mph E | 75% |
| Tuesday Night | 58°F | Showers And Thunderstorms | 7 mph E | 75% |
| Wednesday | 66°F | Rain Showers Likely | 7 mph E | 58% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 6 mph NE | 43% |
| Thursday | 69°F | Chance Rain Showers | 5 mph NE | 34% |
| Thursday Night | 54°F | Chance Rain Showers | 5 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov) for New Castle (37.501, -80.111). Updated through the day.
Growing snapshot for New Castle
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7b
More local growing data for New Castle: nearby ZIP 24175 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Roanoke 8 N, Va (7.7 mi from New Castle). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.