Climate almanac
Marion
Indiana, United States · 40.56°, -85.66°
What is the climate like in Marion?
The best time to visit Marion is typically June – September, with trip comfort peaking in September (7.4/10). Marion is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically May and the driest is September; the year sees roughly 42 in (1065 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in September (7.4/10)
- Warmest monthJuly — average high 84°F (29°C)
- Coolest monthJanuary — average low 23°F (-5°C)
- Wettest monthMay (4.8 in (122 mm))
- Driest monthSeptember (2.5 in (64 mm))
- Annual precipitation42 in (1065 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromMarion 2 N, 2 km away (1893-2026)