Harman US

Rensselaer, IN Weather & Growing Conditions

Tonight
61°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 61. East wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 61°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 5 to 10 mph E 19%
Saturday 80°F Showers And Thunderstorms Likely 5 to 10 mph SE 70%
Saturday Night 67°F Showers And Thunderstorms Likely 5 mph SW 68%
Sunday 74°F Showers And Thunderstorms Likely 5 to 10 mph N 68%
Sunday Night 55°F Showers And Thunderstorms Likely 10 to 15 mph NE 65%
Monday 66°F Showers And Thunderstorms Likely 10 to 15 mph ENE 61%
Monday Night 50°F Chance Rain Showers 10 to 15 mph NE 41%
Tuesday 66°F Slight Chance Rain Showers 10 mph NE 22%
Tuesday Night 50°F Slight Chance Rain Showers then Mostly Cloudy 5 to 10 mph NE 22%
Wednesday 68°F Mostly Cloudy 5 to 10 mph NNE 7%
Wednesday Night 51°F Mostly Cloudy 5 mph NNE 7%
Thursday 70°F Partly Sunny 5 mph NNE 3%
Thursday Night 52°F Mostly Cloudy 0 to 5 mph NNE 4%
Friday 71°F Mostly Sunny 0 to 5 mph NNE 4%

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

Growing snapshot for Rensselaer, IN

Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
6a

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

Climate data from the nearest NOAA station, Rensselaer, In (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.