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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.