Weather & Climate in Union, WV

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

Union experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 32°F in January while summers reach 72°F in July. The area gets 317 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 38.8 inches. The area receives 24.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 39. The city sits at an elevation of 2,063 feet.

Temperature

32°F Jan (0°C) 72°F Jul (22°C)

Annual Average	52.8°F
	2% below US avg
January Average	32°F (0°C)
July Average	72°F (22°C)
Sunny Days	317 days/yr

Geography

Elevation	2,063 ft (629 m)
Area	0.5 sq mi (1.2 km²)
Population Density	920/sq mi
Coordinates	37.5907°N, 80.5400°W
Timezone	America/New_York
County	Monroe County County
Nearest Airport	Roanoke/Blacksburg Regional (Woodrum Field) (ROA) 36 miles away

Precipitation & Snow

Annual Rainfall 38.8"

2% above US avg

Snowfall 24.0"

Wettest Month (Jul) 4.06"

Driest Month (Jan) 2.60"

Air Quality

AQI Median	39.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	28.3 / 100
Social Vulnerability	84.0 / 100
Community Resilience	14.7 / 100

Hazard Breakdown

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

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

Earthquake History

43 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.

Apr 22, 1991	14 km ESE of Falling Spring, West Virginia	M3.5	49 km	15 km
Jun 26, 1995	6 km NNW of Trout Dale, Virginia	M3.4	125 km	2 km
Apr 4, 2010	14 km SW of Gassaway, West Virginia	M3.4	117 km	0 km
Mar 31, 2013	West Virginia	M3.4	120 km	8 km
Sep 13, 2017	11 km NE of Peterstown, West Virginia	M3.2	20 km	18 km
Dec 4, 2001	9 km W of Alderson, West Virginia	M3.1	24 km	9 km
Jun 28, 1991	4 km ENE of Pratt, West Virginia	M3.0	100 km	7 km
May 16, 2009	2 km NNE of Cave Spring, Virginia	M3.0	61 km	13 km
Jan 22, 1995	0 km WNW of Pulaski, Virginia	M2.9	64 km	9 km
Feb 15, 2005	12 km NNW of Raven, Virginia	M2.8	129 km	11 km
Jan 10, 2012	14 km WNW of Birch River, West Virginia	M2.8	113 km	0 km
Jul 30, 2013	12 km SSW of Glenville, West Virginia	M2.8	143 km	13 km
Jul 4, 2009	3 km E of Narrows, Virginia	M2.8	36 km	0 km
Jul 15, 2021	10 km S of Narrows, Virginia	M2.8	46 km	20 km
May 12, 2017	6 km SSW of Narrows, Virginia	M2.8	44 km	4 km
Jul 6, 2023	5 km S of Hillsville, Virginia	M2.7	99 km	0 km
Aug 25, 2011	14 km SE of Falling Spring, West Virginia	M2.7	46 km	13 km
Jun 21, 2017	1 km SW of Pratt, West Virginia	M2.7	101 km	17 km
Feb 8, 2005	15 km E of Vansant, Virginia	M2.7	129 km	9 km
Nov 25, 2009	14 km S of Arrington, Virginia	M2.7	147 km	0 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 1.

Year	Name	Category	Max Wind	Closest
2003	Isabel	Category 1	75 mph	271 km

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

Tornado History

65 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 fatality, 60 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 19, 2019	EF3	100 km	8.1 mi	0
Apr 4, 1974	EF3	65 km	9.2 mi	0
Apr 4, 1974	EF3	48 km	32.2 mi	1
Apr 2, 2024	EF2	68 km	5.3 mi	0
Mar 23, 2022	EF2	100 km	1.9 mi	0
Oct 7, 2014	EF2	58 km	3.0 mi	0
Apr 8, 2011	EF2	65 km	1.9 mi	0
Sep 17, 2004	EF2	77 km	3.0 mi	0
Jul 15, 1996	EF2	90 km	0.5 mi	0
Jun 9, 1996	EF2	84 km	0.1 mi	0
Jun 22, 1990	EF2	8 km	5.0 mi	0
May 26, 1990	EF2	86 km	0.5 mi	0
Aug 21, 1977	EF2	96 km	1.0 mi	0
Jul 11, 1976	EF2	3 km	4.1 mi	0
Apr 24, 1975	EF2	22 km	6.0 mi	0
Apr 4, 1974	EF2	55 km	6.5 mi	0
Apr 12, 1965	EF2	54 km	0.1 mi	0
Apr 8, 1965	EF2	27 km	0.5 mi	0
Feb 25, 1961	EF2	69 km	3.0 mi	0
May 17, 1953	EF2	65 km	1.0 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: KAYFORD MOUNTAIN (31,509 acres, 1991).

Year	Name	Acres Burned	Distance
1991	KAYFORD MOUNTAIN	31,509	87 km
1987	ELLIS CREEK	24,070	89 km
1991	BROWNS BRANCH	17,324	100 km
2012	RICH HOLE	15,923	84 km
1991	ROLLINS BRANCH	14,435	97 km
1991	GAULEY MTN	13,113	83 km
1991	TOMS BRANCH	11,849	92 km
2012	ALLEGHANY TUNNELS FIRES	11,055	39 km
2023	MATTS CREEK	11,028	97 km
1991	BRUSHY FORK	10,704	91 km
2022	UNNAMED	7,791	75 km
1987	RICK CREEK ROAD	7,740	81 km
2012	BARBOURS CREEK.	7,244	39 km
1991	PEACHTREE	6,635	90 km
1991	CARBANATE	6,533	91 km
1987	SAMS BRANCH	5,872	82 km
1987	TUCKER HOLLOW	5,862	93 km
1991	MILBURN	4,777	83 km
1999	SCHYLER FORK	4,417	91 km
2001	MOUNTAIN FORK	4,393	100 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (0°C)	2.6 in	Coldest, Driest
February	34°F (1°C)	2.8 in
March	42°F (6°C)	3.3 in
April	51°F (11°C)	3.4 in
May	60°F (15°C)	3.8 in
June	67°F (19°C)	3.4 in
July	72°F (22°C)	4.1 in	Warmest, Wettest
August	70°F (21°C)	3.5 in
September	64°F (18°C)	3.2 in
October	53°F (12°C)	3.0 in
November	43°F (6°C)	2.8 in
December	35°F (1°C)	2.7 in

Union has a seasonal temperature swing of 40°F / from 32°F in January to 72°F in July. Total annual precipitation is 38.5 inches, with July being the wettest month (4.1") and January the driest (2.6").

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