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Weather & Climate in Grottoes, VA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grottoes experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 34°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 45.3 inches. Air quality is rated Good with a median AQI of 35. The city sits at an elevation of 1,103 feet.
Temperature
34°F Jan (1°C)
75°F Jul (24°C)
| Annual Average | 54.1°F |
| 0% below US avg | |
| January Average | 34°F (1°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 1,103 ft (336 m) |
| Area | 1.9 sq mi (4.9 km²) |
| Population Density | 1,434/sq mi |
| Coordinates | 38.2697°N, 78.8259°W |
| Timezone | America/New_York |
| County | Harrisonburg city County |
| Nearest Airport | Shenandoah Valley Regional (SHD) 4 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 26.6 / 100 |
| Social Vulnerability | 34.3 / 100 |
| Community Resilience | 16.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | 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: M5.8.
| Aug 23, 2011 | 11 km SSW of Mineral, Virginia | M5.8 | 88 km | 6 km |
| Aug 25, 2011 | 8 km SW of Mineral, Virginia | M4.5 | 83 km | 7 km |
| Aug 24, 2011 | 11 km SSW of Mineral, Virginia | M4.2 | 86 km | 0 km |
| Mar 15, 1991 | 7 km NNW of Goochland, Virginia | M3.8 | 99 km | 16 km |
| Oct 21, 1998 | 13 km S of Dillwyn, Virginia | M3.8 | 100 km | 13 km |
| May 5, 2003 | Virginia | M3.6 | 105 km | 13 km |
| Apr 22, 1991 | 14 km ESE of Falling Spring, West Virginia | M3.5 | 126 km | 15 km |
| Sep 1, 2011 | 7 km SSW of Mineral, Virginia | M3.4 | 86 km | 3 km |
| Aug 24, 2011 | 16 km NNW of Goochland, Virginia | M3.4 | 91 km | 0 km |
| Sep 22, 2001 | 5 km E of Pantops, Virginia | M3.2 | 46 km | 0 km |
| May 22, 2014 | 15 km ENE of Cumberland, Virginia | M3.1 | 106 km | 10 km |
| Jan 30, 2012 | 9 km SSE of Louisa, Virginia | M3.1 | 82 km | 3 km |
| Jan 17, 2016 | 3 km NE of Ranson, West Virginia | M3.0 | 145 km | 5 km |
| Mar 26, 2012 | 13 km S of Louisa, Virginia | M3.0 | 84 km | 9 km |
| Oct 2, 2010 | 10 km NNW of Ashland, Virginia | M3.0 | 124 km | 19 km |
| Oct 12, 2011 | 9 km S of Louisa, Virginia | M3.0 | 82 km | 4 km |
| May 6, 2025 | 8 km S of Dillwyn, Virginia | M3.0 | 95 km | 8 km |
| Mar 15, 2015 | 6 km SW of Mineral, Virginia | M2.8 | 84 km | 5 km |
| Aug 23, 2011 | 9 km SSW of Mineral, Virginia | M2.8 | 87 km | 0 km |
| Apr 21, 1998 | 1 km NNW of Free Union, Virginia | M2.8 | 25 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (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 | 201 km |
| 1999 | Floyd | Category 1 | 81 mph | 291 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
144 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 14 fatalities, 55 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Sep 24, 2001 | EF4 | 81 km | 10.0 mi | 0 |
| Sep 17, 2004 | EF3 | 94 km | 9.0 mi | 0 |
| Oct 18, 1990 | EF3 | 75 km | 3.5 mi | 0 |
| Jul 25, 1985 | EF3 | 36 km | 0.2 mi | 0 |
| Jul 9, 1977 | EF3 | 95 km | 5.9 mi | 0 |
| Mar 21, 1976 | EF3 | 43 km | 5.6 mi | 0 |
| Jun 16, 1966 | EF3 | 84 km | 1.0 mi | 0 |
| Sep 30, 1959 | EF3 | 64 km | 6.5 mi | 0 |
| Sep 30, 1959 | EF3 | 35 km | 2.0 mi | 1 |
| Sep 30, 1959 | EF3 | 30 km | 0.8 mi | 11 |
| Apr 19, 2019 | EF2 | 93 km | 2.0 mi | 0 |
| Apr 28, 2011 | EF2 | 44 km | 33.5 mi | 0 |
| Sep 17, 2004 | EF2 | 79 km | 7.0 mi | 0 |
| Sep 17, 2004 | EF2 | 38 km | 8.0 mi | 0 |
| Sep 17, 2004 | EF2 | 99 km | 8.0 mi | 0 |
| Sep 17, 2004 | EF2 | 35 km | 5.0 mi | 0 |
| Sep 8, 2004 | EF2 | 97 km | 1.5 mi | 0 |
| Apr 28, 2002 | EF2 | 48 km | 4.0 mi | 0 |
| May 4, 1990 | EF2 | 48 km | 7.0 mi | 2 |
| Oct 13, 1983 | EF2 | 84 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: PINNACLES (24,792 acres, 2000).
| Year | Name | Acres Burned | Distance |
| 2000 | PINNACLES | 24,792 | 58 km |
| 2012 | RICH HOLE | 15,923 | 84 km |
| 2023 | MATTS CREEK | 11,028 | 93 km |
| 2016 | MOUNT PLEASANT | 11,001 | 67 km |
| 2016 | ROCKY MTN FIRE 2016 | 9,299 | 15 km |
| 2024 | WATERFALL MOUNTAIN | 9,251 | 50 km |
| 2022 | UNNAMED | 7,791 | 93 km |
| 2014 | ARCHER KNOB RX | 6,093 | 50 km |
| 2022 | UNNAMED | 5,893 | 50 km |
| 2024 | WAITES RUN | 5,496 | 88 km |
| 2021 | UNNAMED | 5,345 | 44 km |
| 2015 | UNNAMED | 5,149 | 44 km |
| 2013 | UNNAMED | 4,687 | 38 km |
| 2002 | FULTZ RUN | 4,638 | 36 km |
| 2008 | ST MARYS | 4,373 | 49 km |
| 1999 | SHOP RUN | 4,261 | 13 km |
| 2012 | UNNAMED | 4,219 | 93 km |
| 1986 | BIG RUN | 4,161 | 12 km |
| 2018 | UNNAMED | 4,022 | 37 km |
| 2012 | SHIPWRECK | 3,779 | 30 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 3.0 in | Coldest |
| February | 35°F (1°C) | 2.8 in | Driest |
| March | 42°F (6°C) | 3.4 in | |
| April | 52°F (11°C) | 3.1 in | |
| May | 61°F (16°C) | 4.1 in | |
| June | 68°F (20°C) | 3.7 in | |
| July | 75°F (24°C) | 4.2 in | Warmest, Wettest |
| August | 71°F (22°C) | 3.8 in | |
| September | 65°F (18°C) | 4.1 in | |
| October | 54°F (12°C) | 3.9 in | |
| November | 45°F (7°C) | 3.5 in | |
| December | 36°F (2°C) | 2.9 in |
Grottoes has a seasonal temperature swing of 41°F / from 34°F in January to 75°F in July. Total annual precipitation is 42.6 inches, with July being the wettest month (4.2") and February the driest (2.8").