Rensselaer, IN Weather & Growing Conditions
Overnight
63°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. Low around 63, with temperatures rising to around 65 overnight. East southeast wind around 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Slight Chance Showers And Thunderstorms | 10 mph ESE | 22% |
| Saturday | 80°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 94% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 65% |
| Sunday | 73°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph N | 67% |
| Sunday Night | 54°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 46% |
| Monday | 66°F | Rain Showers Likely | 10 to 15 mph ENE | 55% |
| Monday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 26% |
| Tuesday | 65°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NNE | 21% |
| Wednesday | 66°F | Mostly Cloudy | 10 mph NNE | 8% |
| Wednesday Night | 51°F | Mostly Cloudy | 5 to 10 mph NNE | 7% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 51°F | Mostly Cloudy | 5 mph NNE | 3% |
| Friday | 71°F | Mostly Sunny | 5 mph NNE | 2% |
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.