Fairfield, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a city in Nelson County, Kentucky.
Today
92°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Heat index values as high as 101. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny then Chance Showers And Thunderstorms | 5 mph S | 27% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Mostly Clear | 5 mph S | 31% |
| Sunday | 93°F | Mostly Sunny | 8 mph SW | 3% |
| Sunday Night | 67°F | Partly Cloudy | 3 to 7 mph NE | 7% |
| Monday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 7 mph NE | 42% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 49% |
| Tuesday | 76°F | Chance Rain Showers | 8 mph NE | 36% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 39% |
| Wednesday | 75°F | Chance Rain Showers | 6 mph N | 39% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph N | 27% |
| Thursday | 74°F | Mostly Sunny | 3 to 7 mph N | 8% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 7 mph N | 8% |
| Friday | 74°F | Mostly Sunny | 5 to 8 mph N | 4% |
| Friday Night | 54°F | Partly Cloudy | 5 to 8 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Fairfield (37.931, -85.386). Updated through the day.
Growing snapshot for Fairfield
Last spring frost
Apr 23
First fall frost
Oct 16
Growing season
176 days
Hardiness zone
6b
More local growing data for Fairfield: nearby ZIP 40020 weather · frost dates · planting calendar · Kentucky frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Taylorsville Lake, Ky (6.3 mi from Fairfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.