Helmsburg, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Helmsburg, a community in Brown County, Indiana.
This Afternoon
69°F
Cloudy
Cloudy. High near 69, with temperatures falling to around 64 in the afternoon. Southwest wind around 10 mph, with gusts as high as 21 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Helmsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Cloudy | 10 mph SW | 11% |
| Tonight | 47°F | Mostly Cloudy | 2 to 9 mph WSW | 4% |
| Thursday | 63°F | Mostly Sunny | 3 to 12 mph SW | 0% |
| Thursday Night | 45°F | Mostly Cloudy | 1 to 6 mph W | 8% |
| Friday | 55°F | Mostly Cloudy | 2 to 9 mph NW | 7% |
| Friday Night | 36°F | Partly Cloudy | 2 to 8 mph NNW | 3% |
| Saturday | 54°F | Sunny | 2 to 6 mph NW | 0% |
| Saturday Night | 31°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Sunday | 58°F | Sunny | 0 to 6 mph W | 0% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph W | 0% |
| Monday Night | 38°F | Clear | 3 mph SW | 0% |
| Tuesday | 63°F | Sunny | 5 mph WSW | 1% |
| Tuesday Night | 38°F | Mostly Clear | 0 to 3 mph WNW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Helmsburg (39.268, -86.296). Updated through the day.
Growing snapshot for Helmsburg
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
173 days
Hardiness zone
6b
More local growing data for Helmsburg: nearby ZIP 47435 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Martinsville 2 Sw, In (12.7 mi from Helmsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.