Weather in Chatham County

Calculated from weather data of Savannah/Hilton Head International Airport (KSAV) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	64.0	63.0	67.0	61.0	62.0	67.0
February	70.0	67.0	73.0	68.0	64.0	67.0
March	73.0	73.0	74.0	74.0	74.0	78.0
April	78.0	79.0	79.0	78.0	76.0	79.0
May	85.0		80.0	85.0	83.0	84.0
June	89.0		87.0	90.0	87.0	89.0
July	92.0		93.0	91.0	89.0	93.0
August	91.0		92.0	89.0	88.0	92.0
September	87.0		86.0	84.0	85.0	86.0
October	80.0		79.0	76.0	79.0	82.0
November	70.0		70.0	71.0	67.0	75.0
December	66.0		64.0	68.0	71.0	64.0
Average	78.0	71.0	79.0	78.0	77.0	80.0

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	44.0	43	46	40	44	48
February	49.0	45	53	47	46	48
March	52.0	53	53	52	53	58
April	57.0	58	59	55	54	58
May	65.0		63	66	61	64
June	72.0		70	72	71	72
July	73.0		76	74	73	76
August	74.0		76	73	74	75
September	70.0		69	68	68	71
October	62.0		58	55	61	66
November	50.0		50	54	44	58
December	47.0		46	50	51	42
Average	58.0	50.0	60.0	59.0	58.0	62.0

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	5	95	108	89	118
77 °F or warmer	32	210	211	210	226
68 °F or warmer	72	288	279	282	300
32 °F or colder	6	5	8	3	5

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	5.2	2	7	4	9	6
February	6.3	7	10	4	11	7
March	4.3	5	6	8	6	4
April	2.9	4	4	1	2	5
May	2.9		6	1	1	2
June	3.7		3	4	5	3
July	3.5		4	6	4	2
August	4.6		6	7	6	3
September	4.3		5	5	6	6
October	3.7		4	1	5	2
November	7.3		10	10	6	7
December	6.9		10	5	4	3
Average	4.5	4.4	5.9	4.6	5.1	3.8

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	9.5	11	8	10	10	10
February	9.5	10	10	10	9	10
March	10.2	9	10	12	10	9
April	10.3	10	9	10	10	11
May	9.4		10	9	10	9
June	8.3		9	8	9	9
July	7.5		7	8	8	8
August	7.3		8	7	7	7
September	8.2		8	8	7	9
October	8.3		8	7	7	9
November	8.3		8	10	8	9
December	8.4		9	8	8	8
Average	8.9	9.9	8.8	8.8	8.5	8.9

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

Prevailing wind direction

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

Chatham County weather Q&A

What is the warmest month in Chatham County?

The warmest month is July with an average temperature of 92 °F over the past years.

What is the coldest month in Chatham County?

The coldest month is January with an average daytime temperature of 64 °F in the past few years.

Which month is the wettest in Chatham County?

Chance of precipitation is the highest in November with a probability of around 7.4 %.

Which month is the driest in Chatham County?

The least rainfall and snow can be expected in May. The probability is about 2.9 %.