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Chain-O-Lakes, IN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Chain-O-Lakes, a community in St. Joseph County, Indiana.

Tonight
63°F
Showers And Thunderstorms
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 10pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 63. South wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast for Chain-O-Lakes

WhenTempForecastWindPrecip
Tonight 63°F Showers And Thunderstorms 0 to 5 mph S 88%
Sunday 71°F Showers And Thunderstorms 5 to 10 mph NE 87%
Sunday Night 50°F Chance Rain Showers 10 to 15 mph NE 38%
Monday 66°F Chance Rain Showers 10 to 15 mph NE 30%
Monday Night 48°F Chance Rain Showers then Mostly Cloudy 10 to 15 mph NE 26%
Tuesday 64°F Mostly Cloudy then Slight Chance Rain Showers 10 to 15 mph NE 17%
Tuesday Night 49°F Slight Chance Rain Showers 10 to 15 mph NE 17%
Wednesday 65°F Slight Chance Rain Showers 10 mph NE 20%
Wednesday Night 50°F Slight Chance Rain Showers then Mostly Cloudy 5 to 10 mph NE 20%
Thursday 68°F Partly Sunny 5 to 10 mph NE 4%
Thursday Night 51°F Mostly Cloudy 0 to 10 mph NE 6%
Friday 72°F Partly Sunny 0 to 5 mph NE 6%
Friday Night 49°F Partly Cloudy 0 to 5 mph NE 1%
Saturday 73°F Mostly Sunny 0 to 5 mph NE 2%

Forecast source: National Weather Service (api.weather.gov) for Chain-O-Lakes (41.707, -86.388). Updated through the day.

Growing snapshot for Chain-O-Lakes

Last spring frost
May 1
First fall frost
Oct 19
Growing season
170 days
Hardiness zone
6a

More local growing data for Chain-O-Lakes: nearby ZIP 46619 weather · frost dates · planting calendar · Indiana frost dates

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Climate data from the nearest NOAA station, South Bend Michiana Rgnl Ap, In (3.7 mi from Chain-O-Lakes). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.