Hartz Lake, IN Weather & Growing Conditions
Today
82°F
Sunny
Sunny, with a high near 82. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 0 to 5 mph S | 0% |
| Tonight | 60°F | Mostly Clear | 0 to 5 mph S | 0% |
| Wednesday | 83°F | Mostly Sunny | 0 to 5 mph SW | 13% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 70% |
| Thursday | 80°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 74% |
| Thursday Night | 63°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph S | 62% |
| Friday | 82°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 24% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 24% |
| Saturday | 83°F | Mostly Sunny | 0 to 5 mph S | 12% |
| Saturday Night | 67°F | Partly Cloudy | 5 mph SW | 14% |
| Sunday | 85°F | Mostly Sunny | 5 to 10 mph SW | 14% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
| Monday | 85°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 43% |
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 Aug 4, 2026.