Weather & Climate in Slater-Marietta, SC

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Slater-Marietta enjoys a temperate climate with an average annual temperature of 60°F (15°C). Winters average 41°F in January while summers reach 78°F in July. The area gets 302 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 64.4 inches (wetter than the 38-inch national average). The area receives 4.9 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 1,040 feet.

Temperature

41°F Jan (5°C) 78°F Jul (25°C)

Annual Average	59.6°F
	10% above US avg
January Average	41°F (5°C)
July Average	78°F (25°C)
Sunny Days	302 days/yr

Geography

Elevation	1,040 ft (317 m)
Area	4.3 sq mi (11.2 km²)
Population Density	449/sq mi
Coordinates	35.0375°N, 82.4909°W
Timezone	America/New_York
County	Henderson County County
Nearest Airport	Greenville Spartanburg International (GSP) 18 miles away

Precipitation & Snow

Annual Rainfall 64.4"

69% above US avg

Snowfall 4.9"

Wettest Month (Mar) 5.87"

Driest Month (Apr) 4.21"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	83.8 / 100
Social Vulnerability	69.3 / 100
Community Resilience	40.1 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Hurricane	Relatively Low
Earthquake	Relatively Low
Wildfire	Very Low
Flood	Relatively Moderate
Hail	Relatively Moderate
Strong Wind	Relatively High
Heat Wave	Very Low
Winter Weather	Relatively Low
Lightning	Relatively High
Ice Storm	Very High
Drought	Relatively Moderate
Cold Wave	Relatively High
Landslide	Relatively Moderate

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

54 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.1.

May 10, 2025	21 km SE of Greenback, Tennessee	M4.1	147 km	25 km
Feb 15, 2014	12 km ENE of Parksville, South Carolina	M4.1	141 km	5 km
Jun 16, 2006	9 km W of Maggie Valley, North Carolina	M3.4	84 km	1 km
Jan 3, 1992	4 km ENE of Willington, South Carolina	M3.4	118 km	3 km
Jun 4, 2023	4 km NNW of West Canton, North Carolina	M3.2	70 km	0 km
Jul 26, 2001	11 km S of New Market, Tennessee	M3.2	144 km	17 km
Jul 26, 2001	11 km N of Sevierville, Tennessee	M3.2	141 km	14 km
Aug 23, 2025	3 km N of Coronaca, South Carolina	M3.0	91 km	2 km
Aug 4, 2007	12 km ENE of Lake Lure, North Carolina	M3.0	62 km	9 km
Feb 16, 2014	13 km WNW of Edgefield, South Carolina	M3.0	140 km	7 km
Nov 24, 2012	7 km NE of Sevierville, Tennessee	M3.0	134 km	7 km
Jan 1, 1993	4 km SSW of Spruce Pine, North Carolina	M3.0	100 km	2 km
Aug 25, 2013	3 km NNE of Blowing Rock, North Carolina	M2.9	146 km	9 km
Aug 23, 2025	3 km NNW of Coronaca, South Carolina	M2.9	90 km	7 km
Mar 6, 2006	3 km W of Burnsville, North Carolina	M2.8	98 km	4 km
Apr 26, 2013	9 km E of Lincolnton, Georgia	M2.8	141 km	12 km
Jul 11, 2000	7 km WSW of Seymour, Tennessee	M2.8	150 km	10 km
Jul 5, 1996	7 km WNW of Marble, North Carolina	M2.8	138 km	5 km
Feb 12, 2021	8 km SW of Banner Hill, Tennessee	M2.8	114 km	3 km
May 23, 2023	4 km N of West Canton, North Carolina	M2.8	69 km	1 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Hurricane History

1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.

Year	Name	Category	Max Wind	Closest
1989	Hugo	Category 4	138 mph	132 km

Source: NOAA IBTrACS (Category 1+, 1980–2026).

Tornado History

335 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 10 fatalities, 417 injuries.

Date	Rating	Distance	Path	Fatalities
May 5, 1989	EF4	51 km	15.0 mi	2
May 5, 1989	EF4	96 km	14.0 mi	4
Apr 13, 2020	EF3	72 km	16.7 mi	1
Aug 16, 1994	EF3	100 km	30.0 mi	0
Mar 27, 1994	EF3	93 km	28.0 mi	0
Apr 8, 1974	EF3	73 km	1.0 mi	0
Dec 13, 1973	EF3	90 km	10.7 mi	0
May 27, 1973	EF3	30 km	60.2 mi	0
May 10, 1952	EF3	34 km	22.7 mi	2
Mar 23, 2022	EF2	37 km	6.3 mi	0
May 3, 2021	EF2	98 km	29.4 mi	0
Apr 25, 2020	EF2	19 km	5.5 mi	0
Apr 13, 2020	EF2	18 km	8.0 mi	0
Feb 6, 2020	EF2	99 km	8.7 mi	0
Oct 23, 2017	EF2	70 km	4.9 mi	0
Oct 23, 2017	EF2	46 km	3.0 mi	0
Oct 8, 2017	EF2	39 km	8.4 mi	0
Oct 8, 2017	EF2	76 km	22.3 mi	0
Jan 11, 2012	EF2	72 km	3.8 mi	0
Apr 10, 2009	EF2	94 km	6.7 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: ROCK MOUNTAIN (25,224 acres, 2016).

Year	Name	Acres Burned	Distance
2016	ROCK MOUNTAIN	25,224	94 km
2016	PARTY ROCK	8,572	53 km
2016	PINNACLE MOUNTAIN	7,869	21 km
2016	CHESTNUT KNOB	6,418	100 km
2022	LOST BEAR RX FY2022	4,276	79 km
2016	CLEAR CREEK	3,493	83 km
2016	CAMP BRANCH	3,234	98 km
2010	C-94-95 133 RX	3,192	97 km
2023	PANTHER KNOB	3,170	98 km
2010	UNNAMED	2,909	100 km
2017	UNNAMED	2,514	84 km
2020	CHAMBERS-GRAPE-HICKORY AP	2,421	69 km
2017	UNNAMED	2,395	85 km
2017	UNNAMED	2,362	91 km
2013	UNNAMED	2,237	84 km
2010	BROWN GAP CREEK-A	2,210	96 km
2013	LOST BEAR EAST	2,167	79 km
2021	UNNAMED	2,024	91 km
2019	UNNAMED	2,000	87 km
2009	UNNAMED	1,918	100 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	41°F (5°C)	5.0 in	Coldest
February	43°F (6°C)	4.7 in
March	50°F (10°C)	5.9 in	Wettest
April	58°F (14°C)	4.2 in	Driest
May	65°F (18°C)	5.1 in
June	72°F (22°C)	4.8 in
July	78°F (25°C)	5.1 in	Warmest
August	75°F (24°C)	4.8 in
September	69°F (21°C)	4.2 in
October	59°F (15°C)	4.6 in
November	50°F (10°C)	4.5 in
December	42°F (6°C)	4.7 in

Slater-Marietta has a seasonal temperature swing of 37°F / from 41°F in January to 78°F in July. Total annual precipitation is 57.6 inches, with March being the wettest month (5.9") and April the driest (4.2").

View full profile of Slater-Marietta, SC →