Harman US

Fairfield, OH Weather & Growing Conditions

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

This Afternoon
88°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 88. West wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast for Fairfield

WhenTempForecastWindPrecip
This Afternoon 88°F Slight Chance Showers And Thunderstorms 8 mph W 66%
Tonight 69°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 3 to 7 mph S 71%
Sunday 88°F Partly Sunny then Chance Showers And Thunderstorms 3 to 9 mph SW 40%
Sunday Night 61°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 9 mph N 60%
Monday 73°F Chance Showers And Thunderstorms 8 to 13 mph NE 44%
Monday Night 56°F Chance Showers And Thunderstorms 8 to 12 mph NE 44%
Tuesday 72°F Chance Showers And Thunderstorms 10 mph NE 25%
Tuesday Night 57°F Chance Showers And Thunderstorms 5 to 12 mph NE 40%
Wednesday 72°F Chance Rain Showers 7 mph NE 47%
Wednesday Night 56°F Chance Showers And Thunderstorms 3 to 9 mph NE 47%
Thursday 72°F Partly Sunny 3 to 8 mph N 13%
Thursday Night 55°F Mostly Cloudy 3 to 8 mph N 13%
Friday 73°F Mostly Sunny 5 to 9 mph NE 7%
Friday Night 53°F Partly Cloudy 3 to 9 mph NE 7%

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

All Ohio locations ›

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.