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Weather & Climate in Grantsville, WV
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grantsville experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 32°F in January while summers reach 74°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 49.7 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 39. The city sits at an elevation of 687 feet.
Temperature
32°F Jan (-0°C)
74°F Jul (24°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 32°F (-0°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 687 ft (209 m) |
| Area | 0.5 sq mi (1.2 km²) |
| Population Density | 1,259/sq mi |
| Coordinates | 38.9207°N, 81.0932°W |
| Timezone | America/New_York |
| County | Calhoun County County |
| Nearest Airport | Mid-Ohio Valley Regional (PKB) 35 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 16.8 / 100 |
| Social Vulnerability | 73.7 / 100 |
| Community Resilience | 37.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
47 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 | 134 km | 15 km |
| Nov 20, 2013 | 2 km SW of Buchtel, Ohio | M3.5 | 112 km | 8 km |
| May 24, 2017 | 1 km S of McArthur, Ohio | M3.4 | 124 km | 10 km |
| Apr 24, 2009 | 7 km ENE of Rio Grande, Ohio | M3.4 | 104 km | 8 km |
| Jun 3, 2017 | 1 km WNW of Batesville, Ohio | M3.4 | 112 km | 2 km |
| Apr 4, 2010 | 14 km SW of Gassaway, West Virginia | M3.4 | 39 km | 0 km |
| Mar 31, 2013 | West Virginia | M3.4 | 38 km | 8 km |
| Feb 3, 2025 | 2 km NNW of Oak Hill, Ohio | M3.1 | 129 km | 26 km |
| Dec 4, 2001 | 9 km W of Alderson, West Virginia | M3.1 | 136 km | 9 km |
| Aug 31, 2011 | 3 km SE of Lowell, Ohio | M3.1 | 73 km | 5 km |
| Apr 24, 2025 | 3 km S of Pleasant City, Ohio | M3.1 | 113 km | 6 km |
| Apr 22, 2025 | 3 km ESE of Buffalo, Ohio | M3.1 | 114 km | 5 km |
| Apr 2, 2017 | 5 km W of Graysville, Ohio | M3.0 | 84 km | 4 km |
| Jun 28, 1991 | 4 km ENE of Pratt, West Virginia | M3.0 | 80 km | 7 km |
| May 9, 2025 | 3 km S of Pleasant City, Ohio | M2.9 | 112 km | 5 km |
| Feb 3, 2025 | 0 km NE of Reno, Ohio | M2.8 | 57 km | 10 km |
| Apr 29, 2025 | 1 km SE of Pleasant City, Ohio | M2.8 | 114 km | 2 km |
| Jan 10, 2012 | 14 km WNW of Birch River, West Virginia | M2.8 | 43 km | 0 km |
| May 6, 2002 | 3 km SE of Racine, Ohio | M2.8 | 69 km | 5 km |
| Aug 31, 2011 | 2 km NNW of Belmont, West Virginia | M2.8 | 55 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
85 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 fatality, 38 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Sep 16, 2010 | EF3 | 66 km | 9.1 mi | 1 |
| Oct 1, 1986 | EF3 | 50 km | 1.0 mi | 0 |
| Apr 2, 2024 | EF2 | 83 km | 8.0 mi | 0 |
| Apr 2, 2024 | EF2 | 93 km | 5.3 mi | 0 |
| Feb 28, 2024 | EF2 | 100 km | 4.1 mi | 0 |
| Jul 10, 2003 | EF2 | 60 km | 2.5 mi | 0 |
| Jan 8, 1998 | EF2 | 44 km | 2.0 mi | 0 |
| May 26, 1990 | EF2 | 86 km | 0.5 mi | 0 |
| Jul 28, 1981 | EF2 | 58 km | 6.2 mi | 0 |
| Jun 21, 1981 | EF2 | 93 km | 1.0 mi | 0 |
| Jul 24, 1971 | EF2 | 85 km | 1.0 mi | 0 |
| Aug 22, 1970 | EF2 | 88 km | 1.0 mi | 0 |
| May 7, 1967 | EF2 | 99 km | 0.1 mi | 0 |
| Mar 13, 1967 | EF2 | 70 km | 0.1 mi | 0 |
| Mar 7, 1956 | EF2 | 48 km | 1.0 mi | 0 |
| May 9, 2024 | EF1 | 47 km | 3.4 mi | 0 |
| Apr 2, 2024 | EF1 | 89 km | 0.8 mi | 0 |
| Apr 2, 2024 | EF1 | 91 km | 8.5 mi | 0 |
| Apr 2, 2024 | EF1 | 67 km | 2.3 mi | 0 |
| Apr 2, 2024 | EF1 | 88 km | 5.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: GAULEY MTN (13,113 acres, 1991).
| Year | Name | Acres Burned | Distance |
| 1991 | GAULEY MTN | 13,113 | 84 km |
| 1991 | TOMS BRANCH | 11,849 | 93 km |
| 1991 | LEFT FORK | 10,196 | 91 km |
| 1991 | DRY BRANCH | 8,059 | 86 km |
| 1987 | RICK CREEK ROAD | 7,740 | 83 km |
| 1991 | CARBANATE | 6,533 | 83 km |
| 1987 | JOES BRANCH | 6,340 | 98 km |
| 1987 | TUCKER HOLLOW | 5,862 | 91 km |
| 1987 | BULL CREEK | 5,080 | 95 km |
| 1999 | SCHYLER FORK | 4,417 | 91 km |
| 1987 | LENS CREEK | 3,609 | 94 km |
| 1991 | MILK BRANCH | 3,436 | 84 km |
| 1991 | BLUE CREEK | 3,268 | 66 km |
| 1991 | EIGHTMILE FORK | 3,263 | 70 km |
| 1991 | CHELYAN | 3,256 | 95 km |
| 1999 | GAULEY MT2 | 3,223 | 84 km |
| 1991 | SIMMONS CREEK | 3,108 | 82 km |
| 1999 | KUNS BRANCH | 2,475 | 65 km |
| 1991 | MT. CARBON | 2,245 | 90 km |
| 1987 | NEW RIVER | 2,192 | 89 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 3.4 in | Coldest |
| February | 34°F (1°C) | 3.1 in | Driest |
| March | 43°F (6°C) | 4.0 in | |
| April | 52°F (11°C) | 3.5 in | |
| May | 61°F (16°C) | 4.2 in | |
| June | 69°F (21°C) | 4.0 in | |
| July | 74°F (24°C) | 4.8 in | Warmest, Wettest |
| August | 72°F (22°C) | 4.3 in | |
| September | 66°F (19°C) | 3.7 in | |
| October | 54°F (12°C) | 3.2 in | |
| November | 44°F (7°C) | 3.6 in | |
| December | 35°F (2°C) | 3.5 in |
Grantsville has a seasonal temperature swing of 43°F / from 32°F in January to 74°F in July. Total annual precipitation is 45.1 inches, with July being the wettest month (4.8") and February the driest (3.1").