Petersburg, in Indiana, United States, is home to roughly 2,300 people in the America/Indiana/Petersburg time zone at 38.5°N latitude.
In 2025, Petersburg recorded an average annual temperature of 56°F — right at the 30-year normal of 56°F. The hottest day reached 92°F in July; the coldest was -6°F in January. Total precipitation was 49 inches (wetter than usual). The wettest month was April.
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