Weather in Franklin County

Calculated from weather data of John Glenn Columbus International Airport (KCMH) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	39.0	38.0	44.0	34.0	38.0	44.0
February	46.0	51.0	53.0	42.0	34.0	41.0
March	53.0	57.0	53.0	57.0	59.0	55.0
April	64.0	67.0	65.0	60.0	64.0	60.0
May	74.0		73.0	76.0	72.0	70.0
June	82.0		80.0	84.0	83.0	83.0
July	85.0		84.0	85.0	84.0	89.0
August	83.0		82.0	83.0	85.0	83.0
September	79.0		78.0	76.0	79.0	76.0
October	67.0		67.0	66.0	70.0	64.0
November	52.0		55.0	55.0	51.0	58.0
December	45.0		49.0	42.0	50.0	42.0
Average	63.0	53.0	65.0	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	27.0	27	33	20	28	31
February	29.0	31	32	26	22	28
March	35.0	38	33	36	36	39
April	44.0	49	44	42	44	40
May	55.0		53	57	51	52
June	63.0		60	63	65	64
July	68.0		67	69	67	70
August	66.0		64	65	68	65
September	60.0		60	59	60	57
October	49.0		50	44	55	47
November	36.0		35	38	34	39
December	31.0		36	32	35	29
Average	46.0	36.0	47.0	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	26	33	39	41
77 °F or warmer	7	107	111	125	113
68 °F or warmer	16	181	170	175	161
32 °F or colder	43	64	81	89	70

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	23.6	27	27	25	23	21
February	16.5	6	8	20	23	23
March	12.8	10	15	12	5	15
April	10.0	10	7	12	8	13
May	9.2		10	10	7	15
June	5.4		7	2	7	4
July	4.6		3	9	4	4
August	4.1		5	3	4	4
September	5.3		3	6	5	3
October	7.9		8	2	8	10
November	10.8		9	13	9	13
December	14.1		14	11	9	20
Average	10.2	12.7	9.3	9.8	8.6	11.2

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	9.6	10	9	9	9	9
February	10.4	10	11	11	10	10
March	11.2	11	12	12	11	10
April	10.5	11	10	11	10	11
May	9.1		8	9	8	10
June	8.5		8	8	9	8
July	7.3		7	8	8	7
August	7.3		8	8	6	7
September	7.4		7	8	9	8
October	8.7		8	10	8	8
November	9.3		9	9	9	10
December	8.9		8	8	9	9
Average	9.1	10.5	8.7	9.1	8.8	8.7

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	SW	W	W	SW
February	W	SW	SW	NW	W
March	W	W	SW	W	W
April	W	SW	SW	W	W
May		N	S	NW	SW
June		N	W	SW	W
July		SW	SW	W	W
August		W	SW	SW	W
September		NE	W	SW	S
October		W	SW	SW	SW
November		SW	SW	SW	SW
December		SW	SW	SW	SW

Prevailing wind direction

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

Franklin County weather Q&A

What is the warmest month in Franklin County?

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

What is the coldest month in Franklin County?

The coldest month is January with an average daytime temperature of 39 °F in the past few years.

Which month is the wettest in Franklin County?

Chance of precipitation is the highest in January with a probability of around 23.7 %.

Which month is the driest in Franklin County?

The least rainfall and snow can be expected in August. The probability is about 4.2 %.