Indianapolis, Indiana weather in April

Averages from 2021–2025 (150 days of record).

Average high: 63°F
Average low: 43°F
Rainy days: ~12 per month
Total precipitation: 4.8 in
Warmest recorded: 82°F
Coldest recorded: 21°F

Expect April days in Indianapolis, Indiana to top out around 63°F and cool to about 43°F overnight, with roughly 12 days of measurable rain across the month. In recent years April has ranged from 21°F to 82°F.

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Current Indianapolis, Indiana forecast → · Historical data by Open-Meteo (ERA5).