Jeffersontown, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jeffersontown, a city in Jefferson County, Kentucky.
Today
87°F
Sunny
Sunny, with a high near 87. Northeast wind around 6 mph.
7-day forecast for Jeffersontown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 6 mph NE | 0% |
| Tonight | 68°F | Mostly Clear | 6 mph N | 0% |
| Wednesday | 90°F | Sunny | 1 to 5 mph N | 11% |
| Wednesday Night | 70°F | Mostly Clear | 3 mph S | 11% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 16% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph S | 45% |
| Friday | 88°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 53% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 53% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 36% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph SW | 32% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 15% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph SW | 15% |
| Monday | 92°F | Mostly Sunny | 6 to 10 mph SW | 10% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 19% |
Forecast source: National Weather Service (api.weather.gov) for Jeffersontown (38.206, -85.570). Updated through the day.
Growing snapshot for Jeffersontown
Last spring frost
Apr 3
First fall frost
Nov 3
Growing season
214 days
Hardiness zone
7a
More local growing data for Jeffersontown: nearby ZIP 40220 weather · frost dates · planting calendar · Kentucky frost dates
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Climate data from the nearest NOAA station, Louisville Bowman Fld, Ky (2.6 mi from Jeffersontown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.