Weather in Indiana

Calculated from weather data of Indianapolis International Airport (KIND) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	38.0	35.0	43.0	34.0	37.0	42.0
February	45.0	52.0	51.0	41.0	33.0	41.0
March	54.0	58.0	53.0	56.0	59.0	55.0
April	64.0	66.0	66.0	62.0	64.0	61.0
May	74.0		75.0	76.0	71.0	70.0
June	83.0		82.0	84.0	83.0	84.0
July	85.0		85.0	87.0	83.0	87.0
August	84.0		83.0	84.0	86.0	83.0
September	80.0		79.0	77.0	80.0	78.0
October	66.0		67.0	66.0	68.0	64.0
November	52.0		55.0	54.0	50.0	58.0
December	45.0		48.0	42.0	51.0	43.0
Average	63.0	53.0	66.0	64.0	64.0	64.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	25.0	24	32	18	26	30
February	28.0	32	32	23	20	27
March	35.0	40	34	36	37	38
April	44.0	48	44	44	44	42
May	56.0		54	57	52	53
June	64.0		62	65	66	64
July	69.0		67	70	67	70
August	66.0		66	66	69	65
September	61.0		60	60	61	58
October	49.0		49	44	55	46
November	35.0		37	37	33	40
December	30.0		35	31	34	28
Average	46.0	36.0	48.0	47.0	47.0	47.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
86 °F or warmer	0	29	41	36	38
77 °F or warmer	5	116	123	118	117
68 °F or warmer	22	181	170	167	162
32 °F or colder	46	57	87	84	75

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	20.0	24	21	16	18	16
February	15.5	6	7	26	15	26
March	13.7	7	17	14	10	15
April	11.7	14	13	12	11	10
May	8.7		5	11	11	8
June	5.2		6	2	7	4
July	4.2		3	7	4	4
August	3.5		4	4	2	2
September	4.2		2	4	6	2
October	11.0		9	8	12	9
November	10.0		7	14	5	9
December	13.6		12	14	12	12
Average	10.1	12.7	8.5	10.4	9.0	9.0

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	11.3	12	11	12	11	10
February	11.8	11	13	12	11	12
March	12.9	14	14	13	13	12
April	12.2	13	12	13	12	12
May	10.4		9	11	9	11
June	9.8		10	9	10	10
July	8.7		9	9	8	8
August	8.6		9	9	9	8
September	8.8		7	9	10	9
October	10.7		11	12	10	10
November	10.9		10	12	11	12
December	10.7		10	10	12	11
Average	10.7	12.4	10.3	10.9	10.2	10.2

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	SW	W	W	SW	SW
February	W	SW	W	NW	W
March	SW	SW	SW	S	W
April	SW	SW	SW	W	W
May		NE	S	S	SW
June		N	W	SW	SW
July		W	SW	W	SW
August		W	W	S	W
September		SE	W	SW	SW
October		W	SW	SW	SW
November		SW	SW	SW	SW
December		SW	S	SW	SW

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Indiana weather Q&A

What is the warmest month in Indiana?

The warmest month is July with an average temperature of 85 °F over the past years.

What is the coldest month in Indiana?

The coldest month is January with an average daytime temperature of 38 °F in the past few years.

Which month is the wettest in Indiana?

Chance of precipitation is the highest in January with a probability of around 20.0 %.

Which month is the driest in Indiana?

The least rainfall and snow can be expected in August. The probability is about 3.6 %.