Fairfield, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a community in Allen County, Tennessee.
Today
88°F
Sunny
Sunny, with a high near 88. North northeast wind around 5 mph.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 5 mph NNE | 2% |
| Tonight | 69°F | Mostly Clear then Patchy Fog | 0 to 5 mph N | 2% |
| Wednesday | 88°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 mph | 23% |
| Wednesday Night | 70°F | Patchy Fog then Partly Cloudy | 0 to 5 mph SSE | 9% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 20% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 27% |
| Friday | 90°F | Chance Showers And Thunderstorms | 5 mph SSW | 35% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 35% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 5 mph SSW | 47% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 mph | 47% |
| Sunday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 35% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 35% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 18% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 18% |
Forecast source: National Weather Service (api.weather.gov) for Fairfield (36.621, -86.342). Updated through the day.
Growing snapshot for Fairfield
Last spring frost
Apr 15
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
7a
More local growing data for Fairfield: nearby ZIP 42120 weather · frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Scottsville, Ky (5.8 mi from Fairfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.