Fort Knox, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Knox, a community in Hardin County, Kentucky.
Today
86°F
Sunny
Sunny, with a high near 86. Northeast wind around 6 mph.
7-day forecast for Fort Knox
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 6 mph NE | 0% |
| Tonight | 67°F | Mostly Clear | 0 to 6 mph N | 0% |
| Wednesday | 88°F | Sunny | 0 to 3 mph N | 14% |
| Wednesday Night | 70°F | Partly Cloudy | 0 to 3 mph S | 14% |
| Thursday | 89°F | Mostly Sunny | 2 to 8 mph SW | 12% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms | 6 mph S | 39% |
| Friday | 88°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 44% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 44% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 40% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph SW | 35% |
| Sunday | 89°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 18% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SW | 18% |
| Monday | 90°F | Sunny | 5 to 9 mph SW | 10% |
| Monday Night | 74°F | Partly Cloudy then Slight Chance Rain Showers | 7 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Fort Knox (37.892, -85.967). Updated through the day.
Growing snapshot for Fort Knox
Last spring frost
Apr 19
First fall frost
Oct 24
Growing season
186 days
Hardiness zone
7a
More local growing data for Fort Knox: nearby ZIP 40121 weather · frost dates · planting calendar · Kentucky frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Brandenburg, Ky (8.7 mi from Fort Knox). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.