Weather in South Carolina

Calculated from weather data of Charleston Air Force Base/International (KCHS) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	62.0	63.0	66.0	58.0	60.0	64.0
February	68.0	66.0	73.0	67.0	60.0	64.0
March	71.0	74.0	72.0	73.0	71.0	74.0
April	77.0		79.0	76.0	76.0	77.0
May	83.0		80.0	84.0	82.0	81.0
June	87.0		86.0	89.0	86.0	85.0
July	90.0		92.0	89.0	88.0	91.0
August	89.0		92.0	88.0	87.0	89.0
September	86.0		86.0	85.0	85.0	84.0
October	79.0		78.0	75.0	78.0	80.0
November	69.0		69.0	72.0	66.0	74.0
December	64.0		65.0	65.0	70.0	61.0
Average	76.0	68.0	78.0	77.0	76.0	77.0

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	43.0	43	47	38	42	47
February	48.0	45	51	47	43	46
March	51.0	55	53	52	51	55
April	57.0		58	55	55	56
May	65.0		63	67	61	64
June	71.0		70	72	71	71
July	75.0		76	75	73	76
August	74.0		76	74	74	74
September	70.0		69	68	68	70
October	61.0		59	56	61	64
November	49.0		49	54	44	56
December	46.0		46	48	49	41
Average	58.0	48.0	60.0	59.0	58.0	60.0

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	90	92	78	96
77 °F or warmer	9	205	194	197	190
68 °F or warmer	43	290	272	269	283
32 °F or colder	6	5	10	10	10

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	6.4	3	8	5	8	10
February	7.5	10	7	5	14	13
March	5.9	9	7	8	5	7
April	3.9		5	3	2	5
May	4.2		7	4	2	4
June	5.1		4	3	7	4
July	3.6		4	4	5	3
August	5.6		8	7	5	6
September	6.3		6	8	7	7
October	4.5		6	1	5	4
November	7.8		10	9	5	9
December	8.8		10	4	6	5
Average	5.8	7.2	6.6	5.0	5.7	6.1

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	9.7	11	8	10	9	10
February	10.0	10	10	10	10	11
March	10.7	10	10	12	11	10
April	10.6		10	10	10	12
May	10.1		11	10	10	10
June	8.8		9	8	10	9
July	8.0		8	9	8	7
August	7.5		8	7	7	7
September	8.8		8	9	8	9
October	8.5		8	8	8	9
November	9.0		9	10	9	10
December	8.7		9	8	8	8
Average	9.3	10.4	8.9	9.3	9.0	9.2

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

Prevailing wind direction

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

South Carolina weather Q&A

What is the warmest month in South Carolina?

The warmest month is July with an average temperature of 90 °F over the past years.

What is the coldest month in South Carolina?

The coldest month is January with an average daytime temperature of 62 °F in the past few years.

Which month is the wettest in South Carolina?

Chance of precipitation is the highest in December with a probability of around 8.8 %.

Which month is the driest in South Carolina?

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