Clarksburg, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarksburg, a community in Decatur County, Indiana.
This Afternoon
68°F
Slight Chance Light Rain
A slight chance of rain. Cloudy. High near 68, with temperatures falling to around 64 in the afternoon. Southwest wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Clarksburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Slight Chance Light Rain | 8 mph SW | 15% |
| Tonight | 47°F | Mostly Cloudy | 3 to 7 mph WSW | 4% |
| Thursday | 62°F | Partly Sunny | 5 to 10 mph SW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph WSW | 8% |
| Friday | 54°F | Mostly Cloudy | 3 to 8 mph WNW | 12% |
| Friday Night | 35°F | Partly Cloudy | 3 to 7 mph NW | 9% |
| Saturday | 52°F | Mostly Sunny | 6 mph NW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 56°F | Sunny | 2 to 6 mph W | 0% |
| Sunday Night | 33°F | Mostly Clear | 3 mph W | 0% |
| Monday | 60°F | Sunny | 1 to 5 mph W | 0% |
| Monday Night | 37°F | Clear | 3 mph WSW | 0% |
| Tuesday | 62°F | Sunny | 5 mph W | 1% |
| Tuesday Night | 37°F | Mostly Clear | 3 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Clarksburg (39.435, -85.349). Updated through the day.
Growing snapshot for Clarksburg
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
194 days
Hardiness zone
6a
More local growing data for Clarksburg: nearby ZIP 47225 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Adams
Andersonville
Burney
Greensburg
Lake Santee
Letts
Milford
Millhousen
New Point
Sardinia
St. Omer
St. Paul
Westport
Climate data from the nearest NOAA station, Greensburg, In (9.8 mi from Clarksburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.