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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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 Sep 20, 2026.