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Weather & Climate in Thorp, WA

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

Thorp experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 30°F in January while summers reach 72°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 9.2 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 1,631 feet.

Temperature

30°F Jan (-1°C) 72°F Jul (22°C)
Annual Average50.1°F
7% below US avg
January Average30°F (-1°C)
July Average72°F (22°C)
Sunny Days279 days/yr

Geography

Elevation1,631 ft (497 m)
Area0.5 sq mi (1.2 km²)
Population Density106/sq mi
Coordinates47.0655°N, 120.6708°W
TimezoneAmerica/Los_Angeles
CountyKittitas County County
Nearest AirportGrant County International (MWH)
64 miles away

Precipitation & Snow

Annual Rainfall 9.2"
76% below US avg
Wettest Month (Dec) 3.94"
Driest Month (Jul) 0.43"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score89.1 / 100
Social Vulnerability40.2 / 100
Community Resilience64.6 / 100

Hazard Breakdown

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

Earthquake History

526 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.

May 3, 1996 8 km NNE of Lake Marcel-Stillwater, Washington M5.4 119 km 4 km
Jan 29, 1995 3 km WSW of Des Moines, Washington M5.0 133 km 15 km
Jul 12, 2019 2 km S of Roosevelt, Washington M4.6 135 km 29 km
Jun 18, 1994 11 km SE of Skykomish, Washington M4.3 77 km -1 km
Feb 14, 2011 31 km S of Morton, Washington M4.3 147 km 4 km
Jun 27, 2013 25 km N of Leavenworth, Washington M4.3 84 km 8 km
Jun 17, 2010 30 km S of White Swan, Washington M4.2 107 km 3 km
Feb 18, 2015 15 km ENE of Cle Elum, Washington M4.2 21 km 4 km
May 20, 1995 15 km NNE of Ashford, Washington M4.1 99 km 12 km
Aug 16, 2004 16 km ENE of Packwood, Washington M4.0 75 km -1 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 96 km 2 km
Aug 8, 2023 9 km NNE of Snoqualmie, Washington M3.9 102 km 16 km
Sep 10, 1994 2 km SE of Enumclaw, Washington M3.9 99 km 17 km
Apr 15, 1991 4 km SE of Pateros, Washington M3.9 123 km 11 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 104 km 15 km
Jun 25, 2004 17 km W of Packwood, Washington M3.9 105 km -1 km
Jan 3, 2018 37 km SSE of Morton, Washington M3.9 139 km 10 km
Sep 12, 2015 3 km NE of North Bend, Washington M3.9 96 km 19 km
Mar 29, 2010 10 km NE of Cliffdell, Washington M3.8 23 km 1 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 130 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
Apr 30, 1957 EF2 53 km 1.0 mi 0
May 1, 2024 EF0 47 km 0.4 mi 0
May 26, 2023 EF0 94 km 0.4 mi 0
Apr 7, 2008 EF0 58 km 0.1 mi 0
May 9, 2005 EF0 52 km 0.2 mi 0
Apr 23, 2005 EF0 92 km 0.1 mi 0
Apr 23, 2005 EF0 84 km 0.1 mi 0
May 19, 2004 EF0 50 km 0.3 mi 0
May 15, 2000 EF0 76 km 0.2 mi 0
May 9, 1999 EF0 44 km — 0
Aug 26, 1997 EF0 76 km 1.0 mi 0
Jul 4, 1992 EF0 77 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).

Year Location Cause Max Wave Deaths Distance
1894 PUYALLUP RIVER DELTA, TACOMA, WA Meteorological 3.0 m 2 136 km
1949 PUGET SOUND, WA Meteorological 2.4 m — 143 km
1949 PUGET SOUND, WA Eruption + Earthquake — 8 148 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

6 volcanoes within 200 km. Closest: Rainier (86 km).

Name Type Elevation Last Eruption Distance
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 86 km
Adams Stratovolcano 3,742 m (12,277 ft) 950 114 km
Glacier Peak Stratovolcano 3,213 m (10,541 ft) 1700 121 km
St. Helens Stratovolcano 2,549 m (8,363 ft) 2008 150 km
Indian Heaven Shield(s) 1,806 m (5,925 ft) -6250 154 km
West Crater Volcanic field 1,329 m (4,360 ft) -5750 170 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: RANGE 12 (167,604 acres, 2016).

Year Name Acres Burned Distance
2016 RANGE 12 167,604 88 km
1994 TYEE CREEK 123,618 86 km
2021 SCHNEIDER SPRINGS 114,743 41 km
2013 COLOCKUM TARPS 79,279 43 km
2007 WAUTOMA 77,956 99 km
2020 EVANS CANYON 76,288 26 km
1996 COLD CREEK 72,859 64 km
2018 BOYLSTON 66,292 49 km
2012 TABLE MOUNTAIN COMPLEX 65,887 27 km
2017 NORSE PEAK 51,017 56 km
2009 DRY CREEK COMPLEX 49,843 86 km
2024 RETREAT 44,681 45 km
2018 COUGAR CREEK 42,681 85 km
2017 JOLLY MOUNTAIN 38,159 38 km
1988 DINKELMAN 36,246 68 km
2003 UMTANUM RIDGE 34,351 63 km
2017 SILVER DOLLAR 30,789 87 km
2017 SUTHERLAND CANYON 29,492 64 km
2022 VANTAGE HIGHWAY 29,299 44 km
1994 HATCHERY COMPLEX (RAT) 27,265 52 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 30°F (-1°C) 3.7 in
February 31°F (-1°C) 2.4 in
March 38°F (3°C) 1.7 in
April 44°F (7°C) 1.1 in
May 52°F (11°C) 0.9 in
June 59°F (15°C) 0.8 in
July 72°F (22°C) 0.4 in Warmest, Driest
August 66°F (19°C) 0.6 in
September 58°F (14°C) 0.8 in
October 47°F (8°C) 1.5 in
November 35°F (1°C) 3.3 in
December 26°F (-3°C) 3.9 in Coldest, Wettest

Thorp has a seasonal temperature swing of 45°F / from 26°F in December to 72°F in July. Total annual precipitation is 21.2 inches, with December being the wettest month (3.9") and July the driest (0.4").

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