Harman US

Hartz Lake, IN Weather & Growing Conditions

Today
77°F
Chance Showers And Thunderstorms then Showers And Thunderstorms
A chance of showers and thunderstorms before 10am, then showers and thunderstorms between 10am and 2pm, then a chance of showers and thunderstorms. Cloudy, with a high near 77. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 77°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 to 10 mph SE 89%
Tonight 65°F Showers And Thunderstorms Likely 5 mph S 78%
Sunday 73°F Showers And Thunderstorms Likely 5 to 10 mph N 67%
Sunday Night 54°F Chance Showers And Thunderstorms 10 to 15 mph NE 48%
Monday 66°F Chance Rain Showers 10 to 15 mph NE 48%
Monday Night 49°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph NE 20%
Tuesday 65°F Mostly Cloudy then Slight Chance Rain Showers 10 to 15 mph NE 20%
Tuesday Night 50°F Slight Chance Rain Showers 10 to 15 mph NE 20%
Wednesday 66°F Slight Chance Rain Showers then Mostly Cloudy 10 mph NE 19%
Wednesday Night 51°F Mostly Cloudy 5 to 10 mph NE 11%
Thursday 68°F Partly Sunny 5 to 10 mph NE 3%
Thursday Night 51°F Mostly Cloudy 5 to 10 mph NE 3%
Friday 71°F Mostly Sunny 5 to 10 mph NE 1%
Friday Night 50°F Partly Cloudy 5 to 10 mph NE 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Hartz Lake, IN

Last spring frost
Apr 25
First fall frost
Oct 18
Growing season
173 days
Hardiness zone
6a

Explore more for Hartz Lake, IN: full frost dates · planting calendar · Indiana frost dates

Climate data from the nearest NOAA station, Winamac 2Sse, In (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.