Jeffersontown, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jeffersontown, a city in Jefferson County, Kentucky.
This Afternoon
93°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 100. Northwest wind around 8 mph. Chance of precipitation is 30%.
7-day forecast for Jeffersontown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Chance Showers And Thunderstorms | 8 mph NW | 29% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 8 mph NE | 22% |
| Saturday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SE | 20% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Mostly Clear | 6 mph S | 29% |
| Sunday | 93°F | Mostly Sunny | 6 to 9 mph SW | 7% |
| Sunday Night | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 8 mph N | 18% |
| Monday | 85°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 7 to 10 mph NE | 46% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 46% |
| Tuesday | 77°F | Chance Rain Showers then Chance Showers And Thunderstorms | 10 mph NE | 43% |
| Tuesday Night | 61°F | Chance Showers And Thunderstorms | 6 to 12 mph N | 43% |
| Wednesday | 74°F | Slight Chance Rain Showers then Partly Sunny | 6 to 9 mph N | 23% |
| Wednesday Night | 59°F | Mostly Cloudy | 5 to 10 mph N | 14% |
| Thursday | 74°F | Partly Sunny | 6 to 9 mph N | 7% |
| Thursday Night | 59°F | Partly Cloudy | 6 to 9 mph N | 7% |
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 Sep 18, 2026.