Weather & Climate in Westerville, OH

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

Westerville experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 30°F in January while summers reach 75°F in July. The area gets 275 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 42.2 inches. The area receives 19.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 902 feet.

Temperature

30°F Jan (-1°C) 75°F Jul (24°C)

Annual Average	53.9°F
	0% below US avg
January Average	30°F (-1°C)
July Average	75°F (24°C)
Sunny Days	275 days/yr

Geography

Elevation	902 ft (275 m)
Area	4.9 sq mi (12.6 km²)
Population Density	3,059/sq mi
Coordinates	40.1234°N, 82.9133°W
Timezone	America/New_York
County	Licking County County
Nearest Airport	John Glenn Columbus International (CMH) 9 miles away

Precipitation & Snow

Annual Rainfall 42.2"

11% above US avg

Snowfall 19.0"

Wettest Month (Jul) 4.33"

Driest Month (Feb) 2.09"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	78.9 / 100
Social Vulnerability	19.2 / 100
Community Resilience	83.9 / 100

Hazard Breakdown

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

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

Earthquake History

20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.

Feb 19, 1995	8 km SSE of Rocky Fork Point, Ohio	M3.6	121 km	10 km
Nov 20, 2013	2 km SW of Buchtel, Ohio	M3.5	97 km	8 km
Apr 24, 2009	7 km ENE of Rio Grande, Ohio	M3.4	146 km	8 km
Jun 3, 2017	1 km WNW of Batesville, Ohio	M3.4	140 km	2 km
May 24, 2017	1 km S of McArthur, Ohio	M3.4	106 km	10 km
Feb 3, 2025	2 km NNW of Oak Hill, Ohio	M3.1	137 km	26 km
Apr 24, 2025	3 km S of Pleasant City, Ohio	M3.1	120 km	6 km
Apr 22, 2025	3 km ESE of Buffalo, Ohio	M3.1	124 km	5 km
Aug 31, 2011	3 km SE of Lowell, Ohio	M3.1	141 km	5 km
Jun 5, 2011	5 km W of Lodi, Ohio	M3.0	123 km	5 km
Apr 4, 1994	2 km WNW of Minster, Ohio	M2.9	130 km	5 km
May 9, 2025	3 km S of Pleasant City, Ohio	M2.9	120 km	5 km
Apr 29, 2025	1 km SE of Pleasant City, Ohio	M2.8	121 km	2 km
May 12, 2006	2 km E of Lima, Ohio	M2.8	120 km	5 km
May 14, 2010	1 km ENE of Gibsonburg, Ohio	M2.7	145 km	5 km
Nov 25, 1998	1 km SSW of New London, Ohio	M2.7	114 km	5 km
Feb 11, 2015	8 km SE of Richmond Dale, Ohio	M2.6	109 km	20 km
Mar 8, 2016	0 km N of Thurman, Ohio	M2.6	141 km	20 km
Jun 4, 1990	4 km SSE of Van Buren, Ohio	M2.5	124 km	5 km
Jan 26, 2018	7 km NNW of Vincent, Ohio	M2.5	128 km	11 km

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

Tornado History

390 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 11 fatalities, 395 injuries.

Date	Rating	Distance	Path	Fatalities
May 14, 2014	EF3	94 km	8.9 mi	0
Nov 10, 2002	EF3	60 km	9.0 mi	0
Oct 13, 1999	EF3	59 km	3.6 mi	0
May 31, 1985	EF3	17 km	29.0 mi	1
Jun 13, 1981	EF3	42 km	3.8 mi	4
May 10, 1973	EF3	79 km	89.6 mi	0
May 24, 1971	EF3	95 km	1.0 mi	0
Feb 22, 1971	EF3	17 km	6.8 mi	0
Sep 3, 1970	EF3	53 km	2.3 mi	0
Nov 16, 1965	EF3	85 km	3.8 mi	0
Jun 5, 2024	EF2	66 km	1.3 mi	0
Mar 14, 2024	EF2	59 km	19.5 mi	0
Mar 14, 2024	EF2	95 km	10.3 mi	0
Feb 28, 2024	EF2	81 km	21.1 mi	0
Feb 28, 2024	EF2	14 km	14.0 mi	0
Jun 8, 2022	EF2	85 km	9.1 mi	0
Oct 15, 2021	EF2	94 km	0.9 mi	0
May 27, 2019	EF2	70 km	5.3 mi	0
Apr 14, 2019	EF2	82 km	17.0 mi	0
Nov 5, 2017	EF2	68 km	1.1 mi	0

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

Wildfire History

3 wildfires (100+ acres) recorded within 100 km. Largest: LONG RIDGE RX UNIT 37-38 (1,050 acres, 2022).

Year	Name	Acres Burned	Distance
2022	LONG RIDGE RX UNIT 37-38	1,050	98 km
2021	LONG RIDGE RX UNIT 1-12	1,037	95 km
2022	LONG RIDGE RX UNIT 11-19	936	94 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	30°F (-1°C)	2.3 in	Coldest
February	30°F (-1°C)	2.1 in	Driest
March	40°F (5°C)	2.9 in
April	51°F (10°C)	3.4 in
May	61°F (16°C)	4.0 in
June	70°F (21°C)	4.0 in
July	75°F (24°C)	4.3 in	Warmest, Wettest
August	73°F (23°C)	3.7 in
September	66°F (19°C)	3.0 in
October	54°F (12°C)	2.4 in
November	43°F (6°C)	3.2 in
December	33°F (0°C)	2.9 in

Westerville has a seasonal temperature swing of 46°F / from 30°F in January to 75°F in July. Total annual precipitation is 38.3 inches, with July being the wettest month (4.3") and February the driest (2.1").

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