Thorntown, IN Weather & Growing Conditions
Tonight
64°F
Partly Cloudy then Scattered Rain Showers
Scattered rain showers after 5am. Partly cloudy. Low around 64, with temperatures rising to around 67 overnight. East wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Partly Cloudy then Scattered Rain Showers | 8 mph E | 12% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 9 mph S | 63% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 7 mph S | 42% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 3 to 8 mph WNW | 51% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 65% |
| Monday | 70°F | Showers And Thunderstorms Likely | 12 to 15 mph ENE | 65% |
| Monday Night | 53°F | Chance Showers And Thunderstorms | 12 to 16 mph NE | 47% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 14 mph NE | 32% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 14 mph NNE | 16% |
| Wednesday | 69°F | Mostly Cloudy | 7 to 10 mph NNE | 5% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph N | 3% |
| Thursday | 71°F | Partly Sunny | 5 to 9 mph N | 4% |
| Thursday Night | 54°F | Mostly Cloudy | 3 to 9 mph NNE | 4% |
| Friday | 72°F | Mostly Sunny | 3 to 9 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Thorntown, IN
Last spring frost
Apr 27
First fall frost
Oct 12
Growing season
167 days
Hardiness zone
6a
Explore more for Thorntown, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Crawfordsville 6 Se, In (12.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.