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Weather & Climate in Lonerock, OR

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

Lonerock experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 36°F in January while summers reach 71°F in July. The area gets 311 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 13.1 inches (drier than the 38-inch national average). The area receives 12.8 inches of snow annually. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 2,835 feet.

Temperature

36°F Jan (2°C) 71°F Jul (22°C)
Annual Average51.7°F
4% below US avg
January Average36°F (2°C)
July Average71°F (22°C)
Sunny Days311 days/yr

Geography

Elevation2,835 ft (864 m)
Area0.4 sq mi (1.0 km²)
Population Density23/sq mi
Coordinates45.0887°N, 119.8841°W
TimezoneAmerica/Los_Angeles
CountyMorrow County County
Nearest AirportGrant County Regional/Ogilvie Field (JDA)
65 miles away

Precipitation & Snow

Annual Rainfall 13.1"
66% below US avg
Snowfall 12.8"
Wettest Month (Nov) 2.28"
Driest Month (Jul) 0.59"

Air Quality

AQI Median32.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score26.4 / 100
Social Vulnerability26.6 / 100
Community Resilience2.8 / 100

Hazard Breakdown

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

Earthquake History

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

Jun 29, 2002 6 km ENE of Government Camp, Oregon M4.5 144 km 5 km
Jun 17, 2010 30 km S of White Swan, Washington M4.2 132 km 3 km
Jul 14, 2008 11 km ESE of Maupin, Oregon M4.2 84 km 16 km
Jan 30, 2000 6 km SE of Condon, Oregon M4.1 22 km -1 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 140 km 2 km
Jun 6, 2021 6 km NE of Government Camp, Oregon M3.9 145 km 4 km
Mar 22, 1997 10 km ESE of Condon, Oregon M3.9 19 km 0 km
Aug 7, 1992 8 km WSW of Irrigon, Oregon M3.9 89 km 0 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 126 km 15 km
Jun 29, 2002 7 km NE of Government Camp, Oregon M3.8 144 km 5 km
Jun 14, 2007 12 km ESE of Maupin, Oregon M3.8 83 km 18 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 123 km 20 km
Apr 5, 2008 12 km ESE of Maupin, Oregon M3.6 83 km 18 km
Mar 1, 2007 Washington-Oregon border region M3.6 83 km 23 km
Jan 2, 2010 10 km ESE of Maupin, Oregon M3.6 84 km 14 km
Feb 1, 2000 7 km SE of Condon, Oregon M3.6 21 km -1 km
Apr 20, 2009 10 km ESE of Maupin, Oregon M3.6 84 km 15 km
Jan 23, 2015 3 km N of Cayuse, Oregon M3.5 125 km 20 km
Aug 31, 1999 Washington-Oregon border region M3.5 20 km 3 km
Oct 19, 1990 6 km NE of Government Camp, Oregon M3.5 144 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

8 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date Rating Distance Path Fatalities
May 19, 2006 EF1 84 km 0.1 mi 0
Jul 19, 2004 EF1 59 km 2.2 mi 0
Jun 8, 2016 EF0 61 km 0.2 mi 0
Apr 14, 2011 EF0 39 km 0.2 mi 0
May 23, 2004 EF0 88 km 0.1 mi 0
Oct 4, 2003 EF0 76 km 0.2 mi 0
Jul 9, 1995 EF0 95 km 0.1 mi 0
Apr 12, 1957 EF0 46 km 16.2 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

11 volcanoes within 200 km. Closest: Hood (145 km).

Name Type Elevation Last Eruption Distance
Hood Stratovolcano 3,426 m (11,240 ft) 1866 145 km
Jefferson Stratovolcano 3,199 m (10,495 ft) 950 158 km
Adams Stratovolcano 3,742 m (12,277 ft) 950 176 km
Indian Heaven Shield(s) 1,806 m (5,925 ft) -6250 178 km
Belknap Shield(s) 2,095 m (6,873 ft) 480 179 km
Sand Mountain Field Pyroclastic cone(s) 1,664 m (5,459 ft) -950 180 km
Three Sisters Complex 3,159 m (10,364 ft) 440 183 km
Newberry Shield 2,434 m (7,986 ft) 690 186 km
Bachelor Stratovolcano 2,763 m (9,065 ft) -5800 189 km
Devils Garden Volcanic field 1,698 m (5,571 ft) Unknown 192 km
West Crater Volcanic field 1,329 m (4,360 ft) -5750 193 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: BATTLE MOUNTAIN COMPLEX (184,979 acres, 2024).

Year Name Acres Burned Distance
2024 BATTLE MOUNTAIN COMPLEX 184,979 49 km
2018 BOXCAR 0410 RN 99,874 88 km
2000 MULE DRY 90,184 99 km
2011 HANCOCK COMPLEX 71,495 43 km
2018 SUBSTATION 0730 RN 69,109 94 km
2014 SOUTH FORK COMPLEX 66,743 97 km
2011 0655 RAZOR BACK EAST 65,350 91 km
2023 NEWELL ROAD 61,833 92 km
2007 MONUMENT COMPLEX (RED HILL FIRE) 54,572 40 km
2024 BIG HORN 51,023 88 km
1996 TOWER 50,827 94 km
2018 STUBBLEFIELD 1008 RN 49,160 46 km
2018 JENNIES PEAK 1039 RN 47,664 45 km
2008 COAL PLANT 45,801 68 km
2014 BLACK ROCK 40,760 53 km
2015 HIGHWAY 8 35,296 83 km
2018 LONG HOLLOW 0806 RN 33,662 90 km
2016 0353 RN SCOTT CANYON 32,051 51 km
2014 PINE CREEK 31,033 44 km
2015 CORNER CREEK 0297 PR 30,303 96 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 36°F (2°C) 2.1 in
February 33°F (1°C) 1.6 in
March 38°F (3°C) 1.7 in
April 42°F (6°C) 1.5 in
May 49°F (9°C) 1.6 in
June 56°F (13°C) 1.3 in
July 71°F (22°C) 0.6 in Warmest, Driest
August 63°F (17°C) 0.8 in
September 55°F (13°C) 0.9 in
October 47°F (8°C) 1.3 in
November 37°F (3°C) 2.3 in Wettest
December 31°F (-1°C) 2.1 in Coldest

Lonerock has a seasonal temperature swing of 40°F / from 31°F in December to 71°F in July. Total annual precipitation is 17.6 inches, with November being the wettest month (2.3") and July the driest (0.6").

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