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Indianapolis Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Indianapolis year round climate

  • Spring (March–May): Average 7.4–19.1°C, mild but with fluctuating temperatures; rainfall is higher. Common activities: Outdoor walks, museum visits. Suggested clothing: Jacket, long-sleeved shirts, comfortable shoes.
  • Summer (June–August): Average 23.0–24.7°C, hot and humid with occasional thunderstorms. Common activities: Swimming, outdoor picnics, outdoor concerts. Suggested clothing: Light and breathable clothing, sun hat, sunglasses.
  • Autumn (September–November): Average 14.1–20.9°C, pleasant and comfortable, cool and dry; colorful autumn leaves are a feature. Common activities: Leaf viewing, hiking, farm visits. Suggested clothing: Light jacket, long-sleeved shirts, comfortable shoes.
  • Winter (December–February): Average -0.7–3.0°C, cold and dry with possible snowfall. Common activities: Indoor activities, museum visits, ice skating. Suggested clothing: Heavy coat, scarf, gloves, hat.

Indianapolis climatological average

Annual average temperature: approx. 13°C / Annual rainfall: approx. 956 mm / Summer humidity: 60%–70% / Rainiest month: July

Indianapolis monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-0.7°C
85
February
3°C
74.3
March
7.4°C
111.7
April
12.2°C
122.7
May
19.1°C
100.7
June
23°C
40.3
July
24.7°C
132.3
August
23.8°C
80.3
September
20.9°C
44.7
October
14.1°C
38
November
7.7°C
53.3
December
2.7°C
73

Indianapolis weather for the next seven days

6/9
Tuesday
Heavy rain
32.5°C/22.5°C
6/10
Wednesday
Patchy rain nearby
32.3°C/22°C
6/11
Thursday
Heavy rain
31.6°C/20.4°C
6/12
Friday
Moderate rain
25.8°C/20°C
6/13
Saturday
Sunny
27.7°C/17.1°C
6/14
Sunday
Patchy rain nearby
27.2°C/18.6°C
6/15
Monday
Patchy rain nearby
21.2°C/16.3°C