Petersburg Weather Forecast
Weather forecast for: Petersburg IN
Last Update: 11:46 am EDT Oct 19, 2026
This Afternoon: Sunny, with a high near 71. Calm wind.
Tonight: Mostly clear, with a low around 44. Calm wind.
Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 71. Calm wind.
Tuesday Night: Clear, with a low around 43. Calm wind.
Wednesday: Sunny, with a high near 72. Calm wind.
Wednesday Night: Clear, with a low around 44. Calm wind.
Thursday: Sunny, with a high near 71. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night: Clear, with a low around 46. Light east northeast wind.
Friday: Sunny, with a high near 71. Calm wind becoming east around 6 mph in the afternoon.
Friday Night: Clear, with a low around 46. Light east wind.
Saturday: Sunny, with a high near 72. Light south wind.
Saturday Night: Mostly clear, with a low around 48. Calm wind.
Sunday: Mostly sunny, with a high near 74. Light south southwest wind.