Rensselaer, IN Weather & Growing Conditions
Today
83°F
Patchy Fog then Sunny
Patchy fog before 8am. Sunny, with a high near 83. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog then Sunny | 0 to 5 mph S | 0% |
| Tonight | 60°F | Partly Cloudy | 0 mph | 0% |
| Wednesday | 83°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 17% |
| Wednesday Night | 64°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph SSW | 76% |
| Thursday | 80°F | Showers And Thunderstorms | 0 to 5 mph SSW | 76% |
| Thursday Night | 62°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph S | 59% |
| Friday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 16% |
| Friday Night | 62°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 16% |
| Saturday | 83°F | Mostly Sunny | 0 to 5 mph SSW | 10% |
| Saturday Night | 67°F | Partly Cloudy | 5 mph SSW | 11% |
| Sunday | 85°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
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 Aug 4, 2026.