Hamilton, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a town in Steuben County, Indiana.
Tonight
56°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy, with a low around 56. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 19% |
| Saturday | 74°F | Showers And Thunderstorms | 5 to 10 mph SE | 90% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 86% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 10 mph N | 82% |
| Sunday Night | 53°F | Chance Rain Showers | 10 mph NE | 51% |
| Monday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 45% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 30% |
| Tuesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph NE | 19% |
| Tuesday Night | 52°F | Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 mph NE | 23% |
| Wednesday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 18% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph N | 8% |
| Thursday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 8% |
| Friday | 69°F | Mostly Sunny | 5 to 10 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov) for Hamilton (41.540, -84.920). Updated through the day.
Growing snapshot for Hamilton
Last spring frost
Apr 30
First fall frost
Oct 16
Growing season
167 days
Hardiness zone
6a
More local growing data for Hamilton: nearby ZIP 46742 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Angola, In (10.7 mi from Hamilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.