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Hamilton, OH Weather & Growing Conditions

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

This Afternoon
88°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 88. West wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast for Hamilton

WhenTempForecastWindPrecip
This Afternoon 88°F Showers And Thunderstorms Likely 7 mph W 68%
Tonight 68°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 6 mph S 68%
Sunday 88°F Partly Sunny then Slight Chance Showers And Thunderstorms 3 to 8 mph SW 43%
Sunday Night 61°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 9 mph NE 60%
Monday 73°F Chance Showers And Thunderstorms 9 to 13 mph NE 40%
Monday Night 55°F Chance Showers And Thunderstorms 7 to 13 mph NE 40%
Tuesday 74°F Chance Rain Showers 7 to 10 mph NE 32%
Tuesday Night 58°F Chance Rain Showers 3 to 10 mph NE 41%
Wednesday 72°F Showers And Thunderstorms Likely 7 mph NE 57%
Wednesday Night 57°F Showers And Thunderstorms Likely 3 to 9 mph NE 57%
Thursday 72°F Slight Chance Rain Showers 3 to 7 mph NE 19%
Thursday Night 55°F Mostly Cloudy 2 to 7 mph NE 13%
Friday 74°F Partly Sunny 2 to 8 mph NE 6%
Friday Night 53°F Partly Cloudy 2 to 8 mph NE 6%

Forecast source: National Weather Service (api.weather.gov) for Hamilton (39.393, -84.566). Updated through the day.

Growing snapshot for Hamilton

Last spring frost
Apr 22
First fall frost
Oct 18
Growing season
178 days
Hardiness zone
6b

More local growing data for Hamilton: nearby ZIP 45015 weather · frost dates · planting calendar · Ohio frost dates

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Climate data from the nearest NOAA station, Hamilton Butler Co Rgnl Ap, Oh (2.1 mi from Hamilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.