Clear Lake, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clear Lake, a town in Branch County, Indiana.
This Afternoon
67°F
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a high near 67. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
7-day forecast for Clear Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Scattered Rain Showers | 10 to 15 mph S | 50% |
| Tonight | 48°F | Scattered Rain Showers then Mostly Cloudy | 10 mph SW | 27% |
| Thursday | 57°F | Mostly Cloudy | 10 to 15 mph SW | 13% |
| Thursday Night | 40°F | Rain Showers Likely | 5 to 10 mph W | 64% |
| Friday | 50°F | Chance Rain Showers | 10 mph NW | 27% |
| Friday Night | 34°F | Chance Rain Showers then Mostly Cloudy | 10 mph NW | 27% |
| Saturday | 51°F | Mostly Sunny | 5 to 10 mph NW | 1% |
| Saturday Night | 30°F | Partly Cloudy | 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 15 mph W | 4% |
| Sunday Night | 34°F | Mostly Clear | 5 to 10 mph W | 4% |
| Monday | 59°F | Sunny | 5 to 10 mph W | 1% |
| Monday Night | 39°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Tuesday | 60°F | Sunny | 5 to 10 mph W | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Clear Lake (41.739, -84.834). Updated through the day.
Growing snapshot for Clear Lake
Last spring frost
Apr 30
First fall frost
Oct 16
Growing season
167 days
Hardiness zone
6a
More local growing data for Clear Lake: nearby ZIP 49255 weather · frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Angola, In (10.8 mi from Clear Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.