Weather & Climate in Grayson, KY

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

Grayson experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 32°F in January while summers reach 75°F in July. The area gets 293 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 46.1 inches (wetter than the 38-inch national average). The area receives 18.1 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 577 feet.

Temperature

32°F Jan (0°C) 75°F Jul (24°C)

Annual Average	54.0°F
	0% below US avg
January Average	32°F (0°C)
July Average	75°F (24°C)
Sunny Days	293 days/yr

Geography

Elevation	577 ft (176 m)
Area	2.8 sq mi (7.4 km²)
Population Density	1,374/sq mi
Coordinates	38.3339°N, 82.9358°W
Timezone	America/New_York
County	Boyd County County
Nearest Airport	Greater Portsmouth Regional (PMH) 35 miles away

Precipitation & Snow

Annual Rainfall 46.1"

21% above US avg

Snowfall 18.1"

Wettest Month (Jul) 4.72"

Driest Month (Oct) 2.87"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	74.9 / 100
Social Vulnerability	58.8 / 100
Community Resilience	58.8 / 100

Hazard Breakdown

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

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

Earthquake History

28 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

Nov 10, 2012	6 km W of Blackey, Kentucky	M4.2	133 km	17 km
Feb 19, 1995	8 km SSE of Rocky Fork Point, Ohio	M3.6	99 km	10 km
Nov 20, 2013	2 km SW of Buchtel, Ohio	M3.5	139 km	8 km
Apr 24, 2009	7 km ENE of Rio Grande, Ohio	M3.4	84 km	8 km
May 24, 2017	1 km S of McArthur, Ohio	M3.4	107 km	10 km
Sep 8, 1990	5 km N of Owingsville, Kentucky	M3.3	74 km	0 km
Nov 8, 1990	5 km SW of Blackey, Kentucky	M3.2	137 km	0 km
Feb 3, 2025	2 km NNW of Oak Hill, Ohio	M3.1	72 km	26 km
Jun 28, 1991	4 km ENE of Pratt, West Virginia	M3.0	140 km	7 km
Apr 25, 2020	2 km SE of South Shore, Kentucky	M2.9	42 km	27 km
Mar 17, 1999	2 km NNE of Ripley, Ohio	M2.8	91 km	0 km
May 6, 2002	3 km SE of Racine, Ohio	M2.8	114 km	5 km
Jun 21, 2017	1 km SW of Pratt, West Virginia	M2.7	135 km	17 km
May 11, 2015	5 km ESE of Maysville, Kentucky	M2.6	73 km	11 km
Jul 23, 2013	6 km NNE of Germantown, Kentucky	M2.6	97 km	4 km
Oct 2, 1998	10 km NE of Sylvester, West Virginia	M2.6	132 km	0 km
Feb 11, 2015	8 km SE of Richmond Dale, Ohio	M2.6	92 km	20 km
Jun 6, 2014	13 km NNE of Sissonville, West Virginia	M2.6	123 km	30 km
Mar 8, 2016	0 km N of Thurman, Ohio	M2.6	76 km	20 km
Mar 16, 2012	7 km SE of Alum Creek, West Virginia	M2.6	104 km	5 km

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

Tornado History

179 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 21 fatalities, 332 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 23, 1968	EF5	42 km	34.0 mi	7
Mar 2, 2012	EF3	76 km	85.0 mi	10
Mar 2, 2012	EF3	76 km	49.0 mi	2
May 10, 2003	EF3	75 km	25.0 mi	0
Apr 3, 1974	EF3	79 km	15.5 mi	1
Apr 3, 1974	EF3	92 km	4.9 mi	0
Apr 23, 1968	EF3	43 km	0.1 mi	0
May 7, 1967	EF3	73 km	2.0 mi	0
Apr 8, 1965	EF3	25 km	6.9 mi	0
Apr 8, 1965	EF3	60 km	2.0 mi	0
Apr 2, 2024	EF2	86 km	1.9 mi	0
Apr 2, 2024	EF2	16 km	1.1 mi	0
Apr 2, 2024	EF2	99 km	8.0 mi	0
Jul 4, 2016	EF2	37 km	2.6 mi	0
Mar 2, 2012	EF2	73 km	11.1 mi	1
Feb 29, 2012	EF2	64 km	6.3 mi	0
May 8, 2002	EF2	78 km	3.0 mi	0
Jun 15, 2000	EF2	66 km	2.5 mi	0
May 18, 1995	EF2	54 km	2.0 mi	0
Mar 10, 1986	EF2	89 km	6.0 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (66,345 acres, 1987).

Year	Name	Acres Burned	Distance
1987	UNNAMED	66,345	100 km
1987	BRUSHY	61,231	84 km
1987	UNNAMED	38,312	71 km
1991	JENNINGS CREEK	29,308	73 km
1987	UNNAMED	27,317	89 km
1987	UNNAMED	21,562	53 km
1987	UNNAMED	20,994	61 km
1999	UNNAMED	17,759	95 km
1987	UNNAMED	14,554	71 km
1991	UNNAMED	14,264	84 km
1987	UNNAMED	13,124	81 km
1991	ROCK HOUSE BRANCH	13,056	87 km
1987	UNNAMED	10,817	80 km
1991	UNNAMED	10,183	65 km
1995	UNNAMED	10,148	75 km
1999	UNNAMED	9,384	99 km
1991	CANE ROCK	9,017	92 km
2001	UNNAMED	8,287	75 km
1994	UNNAMED	8,123	97 km
1987	UNNAMED	7,281	63 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (0°C)	2.9 in	Coldest
February	35°F (1°C)	3.0 in
March	44°F (7°C)	3.7 in
April	53°F (12°C)	3.6 in
May	62°F (17°C)	4.4 in
June	70°F (21°C)	3.9 in
July	75°F (24°C)	4.7 in	Warmest, Wettest
August	73°F (23°C)	3.9 in
September	67°F (19°C)	2.9 in
October	55°F (13°C)	2.9 in	Driest
November	45°F (7°C)	3.2 in
December	36°F (2°C)	3.5 in

Grayson has a seasonal temperature swing of 42°F / from 32°F in January to 75°F in July. Total annual precipitation is 42.6 inches, with July being the wettest month (4.7") and October the driest (2.9").

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