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Hillsboro, IN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a town in Fountain County, Indiana.

This Afternoon
83°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. South southwest wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Hillsboro

WhenTempForecastWindPrecip
This Afternoon 83°F Chance Showers And Thunderstorms 6 mph SSW 38%
Tonight 68°F Slight Chance Showers And Thunderstorms 5 mph S 16%
Sunday 82°F Partly Sunny then Chance Showers And Thunderstorms 2 to 9 mph NE 49%
Sunday Night 59°F Chance Showers And Thunderstorms 10 to 14 mph NE 63%
Monday 70°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 14 mph ENE 58%
Monday Night 54°F Chance Showers And Thunderstorms 12 to 15 mph ENE 49%
Tuesday 68°F Chance Showers And Thunderstorms 14 mph NE 30%
Tuesday Night 54°F Chance Showers And Thunderstorms 7 to 14 mph NE 29%
Wednesday 69°F Mostly Cloudy 7 to 10 mph NNE 11%
Wednesday Night 54°F Mostly Cloudy 3 to 10 mph NNE 5%
Thursday 71°F Partly Sunny 5 to 8 mph NNE 3%
Thursday Night 55°F Mostly Cloudy 2 to 8 mph NNE 7%
Friday 74°F Partly Sunny 3 to 8 mph NNE 7%
Friday Night 53°F Partly Cloudy 2 to 8 mph NE 3%

Forecast source: National Weather Service (api.weather.gov) for Hillsboro (40.109, -87.158). Updated through the day.

Growing snapshot for Hillsboro

Last spring frost
Apr 22
First fall frost
Oct 17
Growing season
176 days
Hardiness zone
6a

More local growing data for Hillsboro: nearby ZIP 47949 weather · frost dates · planting calendar · Indiana frost dates

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Climate data from the nearest NOAA station, Attica 2E, In (15.7 mi from Hillsboro). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.