Petersburg, IN Weather & Growing Conditions
Today
85°F
Sunny
Sunny. High near 85, with temperatures falling to around 83 in the afternoon. Northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 2 mph NE | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph NNE | 0% |
| Wednesday | 87°F | Sunny | 1 mph WNW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 2 mph S | 2% |
| Thursday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph SSW | 16% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph SSE | 56% |
| Friday | 86°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SSW | 56% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 3 mph SSW | 40% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 33% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SSW | 24% |
| Sunday | 88°F | Mostly Sunny | 2 to 7 mph SSW | 11% |
| Sunday Night | 73°F | Mostly Clear | 6 mph SSW | 11% |
| Monday | 90°F | Sunny | 3 to 8 mph SSW | 10% |
| Monday Night | 74°F | Slight Chance Showers And Thunderstorms | 7 mph SSW | 17% |
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 Aug 4, 2026.