Fairfield, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a community in Allen County, Tennessee.
This Afternoon
78°F
Mostly Sunny
Mostly sunny, with a high near 78. South wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Mostly Sunny | 15 mph S | 2% |
| Tonight | 63°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 15 mph SSE | 97% |
| Wednesday | 73°F | Showers And Thunderstorms | 5 to 15 mph SW | 95% |
| Wednesday Night | 47°F | Patchy Fog | 0 to 5 mph WSW | 1% |
| Thursday | 71°F | Patchy Fog then Mostly Sunny | 0 to 5 mph SW | 0% |
| Thursday Night | 44°F | Areas Of Fog | 0 mph | 0% |
| Friday | 67°F | Areas Of Fog then Mostly Sunny | 0 to 10 mph NW | 1% |
| Friday Night | 39°F | Partly Cloudy | 5 mph NNW | 2% |
| Saturday | 60°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 0 mph | 1% |
| Sunday | 61°F | Mostly Sunny | 0 to 5 mph NW | 6% |
| Sunday Night | 32°F | Mostly Clear | 0 to 5 mph W | 9% |
| Monday | 63°F | Sunny | 0 to 5 mph WSW | 6% |
| Monday Night | 34°F | Mostly Clear | 0 mph | 1% |
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 Nov 3, 2026.