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Weather & Climate in Quincy, WA

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

Quincy experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 30°F in January while summers reach 73°F in July. The area gets 279 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 7.5 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 28 / among the cleanest air in the country. The city sits at an elevation of 1,304 feet.

Temperature

30°F Jan (-1°C) 73°F Jul (23°C)
Annual Average51.1°F
5% below US avg
January Average30°F (-1°C)
July Average73°F (23°C)
Sunny Days279 days/yr

Geography

Elevation1,304 ft (397 m)
Area2.4 sq mi (6.1 km²)
Population Density1,184/sq mi
Coordinates47.2349°N, 119.8525°W
TimezoneAmerica/Los_Angeles
CountyGrant County County
Nearest AirportGrant County International (MWH)
25 miles away

Precipitation & Snow

Annual Rainfall 7.5"
80% below US avg
Wettest Month (Dec) 1.38"
Driest Month (Jul) 0.24"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score76.9 / 100
Social Vulnerability64.9 / 100
Community Resilience7.8 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively Low
Wildfire Relatively Moderate
Flood Relatively Moderate
Hail Relatively Low
Strong Wind Relatively Low
Heat Wave Relatively Moderate
Winter Weather Relatively Moderate
Lightning Relatively Low
Ice Storm Very Low
Drought Relatively Low
Cold Wave Relatively High
Landslide Relatively Low
Volcano Very Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

296 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.

Jun 24, 1997 16 km WNW of Malott, Washington M4.6 126 km 10 km
Jun 18, 1994 11 km SE of Skykomish, Washington M4.3 115 km -1 km
Jun 27, 2013 25 km N of Leavenworth, Washington M4.3 91 km 8 km
Jun 17, 2010 30 km S of White Swan, Washington M4.2 143 km 3 km
Feb 18, 2015 15 km ENE of Cle Elum, Washington M4.2 68 km 4 km
Sep 1, 2015 15 km N of Nespelem Community, Washington M4.2 135 km 9 km
Aug 16, 2004 16 km ENE of Packwood, Washington M4.0 138 km -1 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 132 km 2 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 130 km 15 km
Apr 15, 1991 4 km SE of Pateros, Washington M3.9 88 km 11 km
Sep 12, 2015 3 km NE of North Bend, Washington M3.9 146 km 19 km
Mar 29, 2010 10 km NE of Cliffdell, Washington M3.8 88 km 1 km
Jan 1, 1997 14 km NNE of Selah, Washington M3.7 68 km 18 km
Jul 4, 1997 8 km NNE of Waterville, Washington M3.7 55 km 7 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 102 km 2 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 121 km 20 km
Apr 6, 2025 12 km E of Greenwater, Washington M3.7 124 km 9 km
Jun 24, 1997 16 km NW of Malott, Washington M3.6 127 km 7 km
Jan 20, 2025 9 km NE of Snoqualmie, Washington M3.5 149 km 17 km
Dec 24, 2000 8 km NNW of Entiat, Washington M3.5 65 km 7 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

19 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.

Date Rating Distance Path Fatalities
Apr 5, 1972 EF2 77 km 0.1 mi 0
Apr 30, 1957 EF2 86 km 1.0 mi 0
May 31, 1997 EF1 97 km 12.0 mi 0
Aug 10, 1985 EF1 68 km 1.0 mi 0
Aug 15, 1978 EF1 88 km 0.1 mi 0
Jul 1, 1978 EF1 96 km 2.3 mi 0
May 1, 2024 EF0 24 km 0.4 mi 0
May 26, 2023 EF0 32 km 0.4 mi 0
Jul 22, 2016 EF0 69 km 0.2 mi 0
May 19, 2010 EF0 53 km 0.2 mi 0
Apr 7, 2008 EF0 94 km 0.1 mi 0
May 9, 2005 EF0 83 km 0.2 mi 0
May 19, 2004 EF0 39 km 0.3 mi 0
May 11, 2003 EF0 66 km 0.1 mi 0
May 15, 2000 EF0 92 km 0.2 mi 0
May 9, 1999 EF0 86 km — 0
Jul 4, 1992 EF0 47 km 0.1 mi 0
Apr 23, 1983 EF0 70 km 0.5 mi 0
Jul 1, 1979 EF0 40 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

2 tsunamis recorded within 500 km. Highest wave on record: 19.8 m (65 ft).

Year Location Cause Max Wave Deaths Distance
1949 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 130 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 3.6 m — 147 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

3 volcanoes within 200 km. Closest: Glacier Peak (136 km).

Name Type Elevation Last Eruption Distance
Glacier Peak Stratovolcano 3,213 m (10,541 ft) 1700 136 km
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 151 km
Adams Stratovolcano 3,742 m (12,277 ft) 950 169 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: PEARL HILL (217,720 acres, 2020).

Year Name Acres Burned Distance
2020 PEARL HILL 217,720 68 km
2016 RANGE 12 167,604 82 km
2000 24 COMMAND 162,300 91 km
1994 TYEE CREEK 123,618 76 km
1984 HANFORD 122,914 92 km
2012 BARKER CANYON COMPLEX 85,906 99 km
2013 COLOCKUM TARPS 79,279 22 km
2007 WAUTOMA 77,956 85 km
2020 EVANS CANYON 76,288 75 km
2018 GRASS VALLEY 76,074 94 km
1996 COLD CREEK 72,859 64 km
2018 BOYLSTON 66,292 47 km
2012 TABLE MOUNTAIN COMPLEX 65,887 52 km
2015 BLACK CANYON 61,379 84 km
2009 DRY CREEK COMPLEX 49,843 85 km
2019 COLD CREEK 43,756 86 km
2018 COUGAR CREEK 42,681 80 km
2002 DEER POINT 41,348 90 km
2017 JOLLY MOUNTAIN 38,159 86 km
2004 POT PEAK-SISI RIDGE COMPLEX 37,603 93 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 30°F (-1°C) 0.9 in
February 34°F (1°C) 0.7 in
March 43°F (6°C) 0.6 in
April 50°F (10°C) 0.5 in
May 59°F (15°C) 0.6 in
June 66°F (19°C) 0.5 in
July 73°F (23°C) 0.2 in Warmest, Driest
August 71°F (22°C) 0.4 in
September 62°F (17°C) 0.4 in
October 50°F (10°C) 0.5 in
November 38°F (3°C) 1.2 in
December 28°F (-2°C) 1.4 in Coldest, Wettest

Quincy has a seasonal temperature swing of 45°F / from 28°F in December to 73°F in July. Total annual precipitation is 7.9 inches, with December being the wettest month (1.4") and July the driest (0.2").

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