Hamilton, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a city in Butler County, Ohio.
Tonight
61°F
Mostly Cloudy then Showers And Thunderstorms
A chance of rain showers between 1am and 4am, then showers and thunderstorms. Mostly cloudy, with a low around 61. Southeast wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Cloudy then Showers And Thunderstorms | 7 to 12 mph SE | 78% |
| Wednesday | 69°F | Showers And Thunderstorms | 9 to 14 mph S | 98% |
| Wednesday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 7 mph SW | 22% |
| Thursday | 67°F | Mostly Sunny | 3 to 10 mph SW | 0% |
| Thursday Night | 43°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Friday | 62°F | Partly Sunny | 0 to 7 mph NW | 8% |
| Friday Night | 39°F | Mostly Cloudy | 6 mph NW | 13% |
| Saturday | 56°F | Mostly Sunny | 6 mph NW | 13% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph NW | 7% |
| Sunday | 59°F | Mostly Sunny | 1 to 8 mph W | 9% |
| Sunday Night | 33°F | Partly Cloudy | 2 to 6 mph W | 13% |
| Monday | 61°F | Sunny | 2 to 9 mph W | 13% |
| Monday Night | 36°F | Mostly Clear | 6 mph SW | 11% |
| Tuesday | 65°F | Sunny | 5 to 8 mph W | 3% |
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
Nearby towns & communities
Beckett Ridge
Darrtown
Fairfield
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, Hamilton Butler Co Rgnl Ap, Oh (2.1 mi from Hamilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.