Petersburg, IN Weather & Growing Conditions
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. East southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 5 mph ESE | 14% |
| Saturday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 6 mph S | 18% |
| Saturday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SSW | 18% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Rain Showers | 3 to 7 mph WSW | 17% |
| Sunday Night | 69°F | Chance Rain Showers | 7 mph NNE | 25% |
| Monday | 85°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 9 mph NE | 47% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 6 to 13 mph NNE | 47% |
| Tuesday | 77°F | Chance Showers And Thunderstorms | 7 to 12 mph NNE | 43% |
| Tuesday Night | 58°F | Mostly Cloudy | 5 to 13 mph NNE | 13% |
| Wednesday | 76°F | Partly Sunny | 5 to 9 mph N | 6% |
| Wednesday Night | 58°F | Partly Cloudy | 3 to 9 mph N | 4% |
| Thursday | 76°F | Mostly Sunny | 3 to 9 mph N | 4% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 9 mph NNE | 4% |
| Friday | 76°F | Mostly Sunny | 3 to 9 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Petersburg, IN
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
186 days
Hardiness zone
6b
Explore more for Petersburg, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Petersburg 61 Brg, In (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.