Clear Lake, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clear Lake, a town in Branch County, Indiana.
Tonight
56°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 4am. Mostly cloudy, with a low around 56. East wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Clear Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Cloudy then Chance Rain Showers | 5 mph E | 25% |
| Saturday | 72°F | Showers And Thunderstorms | 10 mph E | 90% |
| Saturday Night | 61°F | Showers And Thunderstorms | 5 mph S | 86% |
| Sunday | 70°F | Showers And Thunderstorms | 5 to 10 mph N | 81% |
| Sunday Night | 52°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 49% |
| Monday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 37% |
| Monday Night | 48°F | Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Tuesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph NE | 20% |
| Tuesday Night | 51°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Wednesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 25% |
| Wednesday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 18% |
| Thursday | 66°F | Partly Sunny | 10 mph NE | 9% |
| Thursday Night | 50°F | Mostly Cloudy | 5 to 10 mph N | 9% |
| Friday | 69°F | Partly Sunny | 5 to 10 mph N | 6% |
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 Sep 19, 2026.