New Castle, KY Weather & Growing Conditions
This Afternoon
68°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 68. South wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms | 9 to 14 mph S | 90% |
| Tonight | 50°F | Slight Chance Drizzle | 7 mph W | 6% |
| Thursday | 66°F | Mostly Sunny | 6 to 10 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 6 mph W | 0% |
| Friday | 61°F | Partly Sunny | 2 to 8 mph NW | 7% |
| Friday Night | 39°F | Mostly Cloudy | 7 mph NW | 7% |
| Saturday | 54°F | Mostly Sunny | 7 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 57°F | Sunny | 3 to 7 mph W | 0% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 2% |
| Monday | 60°F | Sunny | 6 mph SW | 1% |
| Monday Night | 38°F | Clear | 5 mph SW | 1% |
| Tuesday | 65°F | Sunny | 7 mph SW | 1% |
| Tuesday Night | 38°F | Mostly Clear | 5 mph W | 1% |
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 (14.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.