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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

WhenTempForecastWindPrecip
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

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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.