Fairfield, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a city in Butler County, Ohio.
Today
86°F
Sunny
Sunny, with a high near 86. Northeast wind around 3 mph.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 mph NE | 0% |
| Tonight | 65°F | Mostly Clear | 3 mph N | 1% |
| Wednesday | 89°F | Sunny | 0 to 3 mph NW | 13% |
| Wednesday Night | 68°F | Partly Cloudy | 0 to 3 mph N | 5% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 7 mph SW | 25% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph S | 61% |
| Friday | 86°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 65% |
| Friday Night | 68°F | Showers And Thunderstorms Likely | 1 to 5 mph SW | 65% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 37% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 31% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 8 mph SW | 15% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 6 mph SW | 16% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 22% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 28% |
Forecast source: National Weather Service (api.weather.gov) for Fairfield (39.331, -84.543). Updated through the day.
Growing snapshot for Fairfield
Last spring frost
Apr 19
First fall frost
Oct 22
Growing season
186 days
Hardiness zone
6b
More local growing data for Fairfield: nearby ZIP 45014 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Beckett Ridge
Darrtown
Hamilton
Jacksonburg
Middletown
Millville
Monroe
New Miami
Olde West Chester
Oxford
Pleasant Run Farm
Seven Mile
Somerville
Trenton
Wetherington
Williamsdale
Woodsdale
Climate data from the nearest NOAA station, Fairfield, Oh (2.5 mi from Fairfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.