Indianapolis Weather Year-Round — Best Time to Visit
Indianapolis, United States has mild weather year-round. The best time to visit is September (score: 89/100). Annual average high: 16.7°C, total rainfall: 1061mm.
When is the best time to visit Indianapolis?
89
September is the best month to visit Indianapolis with a travel score of 89/100 (Excellent).
Expect highs of 25.1°C, 7 rain days, and 10 hours of daily sunshine.
View September weather details →Travel Score by Month
44
Jan
51
Feb
59
Mar
69
Apr
76
May
83
Jun
83
Jul
86
Aug
89
Sep
74
Oct
59
Nov
46
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Indianapolis each month?
16.7°C
Avg High
7.6°C
Avg Low
1061mm
Annual Rain
How much rain does Indianapolis get?
Indianapolis receives 1061mm of rain annually. The wettest month is typically May with 123mm, while February is the driest.
What is the weather like each month in Indianapolis?
January
44
2°C
Low: -6°C
9 rain days
Mixed
February
51
5°C
Low: -4°C
8 rain days
Mixed
March
59
11°C
Low: 1°C
10 rain days
Mixed
April
69
17°C
Low: 7°C
11 rain days
Good
May
76
22°C
Low: 13°C
13 rain days
Good
June
83
27°C
Low: 18°C
11 rain days
Excellent
July
83
29°C
Low: 20°C
11 rain days
Excellent
August
86
28°C
Low: 19°C
9 rain days
Excellent
September
Best time to visit89
25°C
Low: 16°C
7 rain days
Excellent
October
74
18°C
Low: 9°C
8 rain days
Good
November
59
11°C
Low: 3°C
8 rain days
Mixed
December
46
5°C
Low: -2°C
9 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31