Grantsburg, IN Weather & Growing Conditions
Overnight
60°F
Showers And Thunderstorms
Rain showers before 4am, then showers and thunderstorms. Cloudy, with a low around 60. South wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Showers And Thunderstorms | 9 mph S | 98% |
| Wednesday | 72°F | Showers And Thunderstorms then Mostly Cloudy | 6 to 9 mph SW | 85% |
| Wednesday Night | 45°F | Mostly Cloudy | 1 to 5 mph SW | 6% |
| Thursday | 68°F | Sunny | 1 to 7 mph SW | 0% |
| Thursday Night | 41°F | Partly Cloudy | 2 mph W | 0% |
| Friday | 63°F | Partly Sunny | 0 to 5 mph N | 11% |
| Friday Night | 36°F | Mostly Cloudy | 3 mph NW | 11% |
| Saturday | 58°F | Mostly Sunny | 3 mph N | 2% |
| Saturday Night | 32°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 61°F | Mostly Sunny | 0 to 5 mph W | 8% |
| Sunday Night | 31°F | Mostly Clear | 0 to 3 mph NW | 11% |
| Monday | 63°F | Sunny | 1 to 5 mph W | 11% |
| Monday Night | 34°F | Mostly Clear | 3 mph SW | 4% |
| Tuesday | 67°F | Sunny | 5 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grantsburg, IN
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
184 days
Hardiness zone
6b
Explore more for Grantsburg, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, English, In (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.