New Castle, KY Weather & Growing Conditions
Tonight
67°F
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 7 mph NE | 31% |
| Saturday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 35% |
| Sunday | 90°F | Slight Chance Rain Showers then Mostly Sunny | 8 mph SW | 17% |
| Sunday Night | 67°F | Mostly Cloudy then Chance Rain Showers | 7 mph N | 26% |
| Monday | 82°F | Chance Rain Showers then Chance Showers And Thunderstorms | 8 mph NE | 45% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 10 mph NE | 51% |
| Tuesday | 75°F | Chance Rain Showers then Chance Showers And Thunderstorms | 8 mph NE | 47% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 47% |
| Wednesday | 72°F | Chance Rain Showers | 7 mph N | 30% |
| Wednesday Night | 57°F | Slight Chance Rain Showers then Mostly Cloudy | 7 mph N | 17% |
| Thursday | 72°F | Partly Sunny | 7 mph N | 9% |
| Thursday Night | 57°F | Mostly Cloudy | 7 mph N | 9% |
| Friday | 72°F | Mostly Sunny | 5 to 8 mph N | 4% |
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 Sep 19, 2026.