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Fairfield, OH Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a city in Butler County, Ohio.

Overnight
62°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 62. East wind around 3 mph.

7-day forecast for Fairfield

WhenTempForecastWindPrecip
Overnight 62°F Patchy Fog 3 mph E 2%
Saturday 84°F Widespread Fog then Chance Showers And Thunderstorms 5 mph SE 45%
Saturday Night 68°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 mph S 58%
Sunday 85°F Chance Showers And Thunderstorms 2 to 6 mph SW 46%
Sunday Night 64°F Chance Showers And Thunderstorms 9 mph NE 46%
Monday 77°F Chance Showers And Thunderstorms 7 to 10 mph NE 50%
Monday Night 59°F Chance Showers And Thunderstorms 7 to 12 mph NE 50%
Tuesday 73°F Chance Showers And Thunderstorms 9 mph NE 43%
Tuesday Night 59°F Chance Showers And Thunderstorms 5 to 12 mph NE 38%
Wednesday 72°F Chance Rain Showers then Slight Chance Showers And Thunderstorms 5 to 8 mph N 28%
Wednesday Night 58°F Slight Chance Showers And Thunderstorms then Mostly Cloudy 3 to 8 mph N 23%
Thursday 73°F Partly Sunny 5 to 8 mph N 10%
Thursday Night 57°F Mostly Cloudy 3 to 8 mph N 10%
Friday 72°F Mostly Sunny 5 to 8 mph N 6%

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

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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 Sep 19, 2026.