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Weather & Climate in Grass Valley, NV
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grass Valley experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 32°F in January while summers reach 75°F in July. The area gets 322 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 8.3 inches (drier than the 38-inch national average). The area receives 22.0 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 4,425 feet.
Temperature
32°F Jan (0°C)
75°F Jul (24°C)
| Annual Average | 50.6°F |
| 6% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 322 days/yr |
Geography
| Elevation | 4,425 ft (1,349 m) |
| Area | 34.5 sq mi (89.4 km²) |
| Population Density | 35/sq mi |
| Coordinates | 40.7971°N, 117.7603°W |
| Timezone | America/Los_Angeles |
| County | Pershing County County |
| Nearest Airport | Elko Regional (EKO) 103 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 6.0 / 100 |
| Social Vulnerability | 75.4 / 100 |
| Community Resilience | 0.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
316 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Aug 30, 2025 | 51 km NE of Valmy, Nevada | M4.8 | 95 km | 8 km |
| Apr 17, 1997 | 34 km E of Crescent Valley, Nevada | M4.3 | 142 km | 5 km |
| Apr 28, 2019 | Nevada | M4.1 | 114 km | 4 km |
| Sep 28, 2011 | 54 km ESE of Lovelock, Nevada | M4.1 | 91 km | 0 km |
| Apr 19, 1999 | 68 km SE of Lovelock, Nevada | M4.1 | 123 km | 15 km |
| Apr 6, 1992 | 12km NNW of Austin, Nevada | M4.1 | 145 km | 4 km |
| Mar 31, 2025 | 57 km NE of Valmy, Nevada | M4.0 | 99 km | 6 km |
| May 17, 1993 | 59 km ENE of Fallon Station, Nevada | M4.0 | 137 km | 5 km |
| Aug 30, 2025 | 61 km NNE of Valmy, Nevada | M4.0 | 100 km | 4 km |
| Apr 28, 2019 | 49 km NW of Austin, Nevada | M4.0 | 114 km | 4 km |
| May 14, 2025 | 57 km NE of Valmy, Nevada | M3.9 | 98 km | 8 km |
| May 7, 2019 | 48 km NW of Austin, Nevada | M3.9 | 114 km | 5 km |
| Sep 11, 2012 | 26 km SSE of Paradise Valley, Nevada | M3.9 | 58 km | 0 km |
| May 14, 2016 | 8 km W of Gerlach, Nevada | M3.9 | 144 km | 9 km |
| Aug 12, 1995 | 61 km NNW of Carlin, Nevada | M3.9 | 134 km | 10 km |
| Mar 31, 2000 | 32 km NW of Carlin, Nevada | M3.9 | 113 km | 5 km |
| May 15, 2025 | 59 km NE of Valmy, Nevada | M3.8 | 100 km | 6 km |
| Jan 24, 2014 | 23 km N of Crescent Valley, Nevada | M3.8 | 99 km | 9 km |
| Aug 30, 2025 | 55 km NE of Valmy, Nevada | M3.8 | 99 km | 8 km |
| Mar 4, 2024 | 17 km E of Crescent Valley, Nevada | M3.8 | 126 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
10 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.
| Date | Rating | Distance | Path | Fatalities |
| May 5, 1994 | EF1 | 73 km | 1.0 mi | 0 |
| May 11, 2018 | EF0 | 36 km | 0.0 mi | 0 |
| May 11, 2018 | EF0 | 44 km | 0.0 mi | 0 |
| May 21, 2014 | EF0 | 96 km | 0.2 mi | 0 |
| Apr 24, 2011 | EF0 | 11 km | 0.5 mi | 0 |
| Jun 27, 2004 | EF0 | 34 km | 0.1 mi | 0 |
| Jun 25, 2004 | EF0 | 20 km | 0.1 mi | 0 |
| Jun 25, 2004 | EF0 | 68 km | 0.3 mi | 0 |
| Aug 29, 2003 | EF0 | 76 km | 0.1 mi | 0 |
| Aug 14, 1979 | EF0 | 29 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
1 volcano within 200 km. Closest: Soda Lakes (170 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 170 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: DUN GLENN COMPLEX (POKER BROWN) (236,451 acres, 1999).
| Year | Name | Acres Burned | Distance |
| 1999 | DUN GLENN COMPLEX (POKER BROWN) | 236,451 | 72 km |
| 2017 | ROOSTERS COMB | 217,510 | 96 km |
| 2006 | SHEEP | 153,116 | 97 km |
| 2007 | ANTELOPE COMPLEX | 130,150 | 96 km |
| 1999 | SOMBRERO | 128,143 | 45 km |
| 2016 | HOT POT | 120,015 | 80 km |
| 1985 | AMAX 1 | 92,482 | 52 km |
| 2001 | SHEEP | 85,110 | 81 km |
| 2001 | SPAULDING | 76,332 | 35 km |
| 2001 | BUFFALO COMPLEX (HOT LAKE) | 73,798 | 96 km |
| 1999 | CLOVER | 72,638 | 78 km |
| 1996 | UPPER HUMBOLDT COMPLEX (DUTCH FLAT) | 71,058 | 51 km |
| 2000 | BILK CREEK COMPLEX (DOUBLE H) | 69,694 | 90 km |
| 2018 | SHEEP CREEK | 58,483 | 82 km |
| 2007 | TUNGSTEN | 58,367 | 35 km |
| 2001 | UNNAMED | 55,255 | 15 km |
| 1985 | DIXIE | 41,704 | 35 km |
| 2001 | UPPER WILLOW | 40,996 | 100 km |
| 1985 | JUNGORD | 40,729 | 24 km |
| 2011 | IZZENHOOD | 39,328 | 85 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 0.8 in | |
| February | 36°F (2°C) | 0.7 in | |
| March | 41°F (5°C) | 0.9 in | |
| April | 46°F (8°C) | 0.9 in | |
| May | 55°F (13°C) | 1.0 in | Wettest |
| June | 64°F (18°C) | 0.8 in | |
| July | 75°F (24°C) | 0.3 in | Warmest, Driest |
| August | 72°F (22°C) | 0.4 in | |
| September | 63°F (17°C) | 0.5 in | |
| October | 52°F (11°C) | 0.6 in | |
| November | 40°F (4°C) | 0.9 in | |
| December | 31°F (-0°C) | 0.9 in | Coldest |
Grass Valley has a seasonal temperature swing of 43°F / from 31°F in December to 75°F in July. Total annual precipitation is 8.8 inches, with May being the wettest month (1.0") and July the driest (0.3").