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
95°F
Sunny
Sunny, with a high near 95. Heat index values as high as 100. Southwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fort Knox
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Sunny | 6 mph SW | 12% |
| Tonight | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph S | 16% |
| Sunday | 95°F | Mostly Sunny | 6 to 9 mph SW | 2% |
| Sunday Night | 68°F | Partly Cloudy | 7 mph N | 7% |
| Monday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 8 mph NE | 44% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 46% |
| Tuesday | 77°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 mph NE | 39% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 5 to 9 mph N | 38% |
| Wednesday | 75°F | Chance Rain Showers | 5 to 8 mph N | 38% |
| Wednesday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 8 mph N | 17% |
| Thursday | 75°F | Mostly Sunny | 3 to 8 mph N | 6% |
| Thursday Night | 57°F | Partly Cloudy | 3 to 8 mph N | 6% |
| Friday | 75°F | Mostly Sunny | 5 to 8 mph N | 4% |
| Friday Night | 56°F | Partly Cloudy | 8 mph NE | 3% |
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 Sep 19, 2026.