Hamilton, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a city in Butler County, Ohio.
Today
86°F
Sunny
Sunny, with a high near 86. Northeast wind around 3 mph.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 mph NE | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph N | 1% |
| Wednesday | 89°F | Sunny | 0 to 3 mph NW | 10% |
| Wednesday Night | 67°F | Mostly Clear | 0 to 3 mph NW | 5% |
| Thursday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 7 mph SW | 24% |
| Thursday Night | 69°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph SW | 62% |
| Friday | 86°F | Showers And Thunderstorms Likely | 1 to 7 mph SW | 65% |
| Friday Night | 67°F | Showers And Thunderstorms Likely | 1 to 5 mph SW | 65% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 36% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 mph SW | 30% |
| Sunday | 89°F | Mostly Sunny | 1 to 7 mph SW | 14% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SW | 15% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 22% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 29% |
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 Aug 4, 2026.