New Castle, KY Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 5 mph NE | 0% |
| Tonight | 65°F | Mostly Clear | 5 mph N | 1% |
| Wednesday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 mph N | 19% |
| Wednesday Night | 68°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 mph S | 19% |
| Thursday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 20% |
| Thursday Night | 69°F | Slight Chance Showers And Thunderstorms | 6 mph S | 48% |
| Friday | 86°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 63% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph SW | 63% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 34% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph SW | 32% |
| Sunday | 87°F | Mostly Sunny | 3 to 8 mph SW | 14% |
| Sunday Night | 70°F | Partly Cloudy | 7 mph SW | 14% |
| Monday | 89°F | Sunny | 6 to 9 mph SW | 13% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Castle, KY
Last spring frost
Apr 12
First fall frost
Oct 25
Growing season
193 days
Hardiness zone
6b
Explore more for New Castle, KY: full frost dates · planting calendar · Kentucky frost dates
Climate data from the nearest NOAA station, Crestwood 4Ne, Ky (14.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.