Hamilton, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a city in Butler County, Ohio.
Today
89°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3pm and 4pm, then showers and thunderstorms likely. Partly sunny, with a high near 89. Southeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 6 mph SE | 66% |
| Tonight | 68°F | Showers And Thunderstorms Likely | 3 mph S | 59% |
| Sunday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph W | 39% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 51% |
| Monday | 73°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 55% |
| Monday Night | 55°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 45% |
| Tuesday | 72°F | Slight Chance Showers And Thunderstorms | 10 mph NE | 24% |
| Tuesday Night | 57°F | Chance Showers And Thunderstorms | 5 to 12 mph NE | 39% |
| Wednesday | 72°F | Chance Rain Showers | 7 mph NE | 45% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 2 to 8 mph NE | 45% |
| Thursday | 72°F | Mostly Cloudy | 3 to 8 mph N | 13% |
| Thursday Night | 55°F | Mostly Cloudy | 2 to 8 mph N | 13% |
| Friday | 73°F | Mostly Sunny | 3 to 8 mph NE | 8% |
| Friday Night | 53°F | Partly Cloudy | 3 to 8 mph NE | 8% |
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 19, 2026.