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Weather & Climate in Bonanza, OR

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

Bonanza experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 32°F in January while summers reach 67°F in July. The area gets 261 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 4,140 feet.

Temperature

32°F Jan (-0°C) 67°F Jul (19°C)
Annual Average46.6°F
14% below US avg
January Average32°F (-0°C)
July Average67°F (19°C)
Sunny Days261 days/yr

Geography

Elevation4,140 ft (1,262 m)
Area0.3 sq mi (0.8 km²)
Population Density671/sq mi
Coordinates42.2003°N, 121.4067°W
TimezoneAmerica/Los_Angeles
CountyKlamath County County
Nearest AirportCrater Lake/Klamath Regional (LMT)
17 miles away

Precipitation & Snow

Wettest Month (Dec) 2.01"
Driest Month (Jul) 0.35"

Air Quality

AQI Median32.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score77.9 / 100
Social Vulnerability58.6 / 100
Community Resilience25.7 / 100

Hazard Breakdown

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

Earthquake History

499 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.

Sep 21, 1993 27 km WNW of Klamath Falls, Oregon M6.0 56 km 9 km
Sep 21, 1993 22 km WNW of Klamath Falls, Oregon M5.9 53 km 9 km
Dec 4, 1993 20 km WNW of Klamath Falls, Oregon M5.1 51 km 5 km
Sep 8, 2023 12 km NE of Burney, CA M5.0 139 km 16 km
Jul 16, 2015 42 km E of Fort Bidwell, California M4.6 150 km 10 km
May 10, 2005 10 km NW of Burney, California M4.4 143 km 17 km
Jun 30, 2004 10 km NNE of New Pine Creek, Oregon M4.4 97 km 9 km
Dec 20, 2000 12 km NNW of Burney, California M4.4 137 km 17 km
Sep 8, 2023 12 km NE of Burney, CA M4.3 138 km 12 km
Sep 21, 1993 25 km SW of Chiloquin, Oregon M4.3 57 km -2 km
Dec 20, 2000 11 km NNW of Burney, California M4.3 137 km 18 km
Jan 19, 1994 15 km WNW of Klamath Falls, Oregon M4.3 46 km -1 km
Jul 22, 2004 Oregon M4.3 97 km 0 km
Jan 9, 1994 12 km WNW of Klamath Falls, Oregon M4.3 43 km 1 km
May 15, 2002 9 km W of Klamath Falls, Oregon M4.3 41 km 6 km
Aug 29, 1997 Northern California M4.2 96 km 44 km
Dec 31, 1993 14 km WNW of Klamath Falls, Oregon M4.1 45 km -2 km
Sep 23, 1993 23 km WNW of Klamath Falls, Oregon M4.1 54 km 6 km
Jan 7, 1994 12 km WNW of Klamath Falls, Oregon M4.0 43 km 0 km
Dec 25, 1993 15 km WNW of Klamath Falls, Oregon M4.0 46 km -2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
May 19, 1962 EF1 36 km 0.5 mi 0
May 22, 1958 EF1 32 km 2.7 mi 0
May 28, 2019 EF0 38 km 0.0 mi 0
Apr 17, 2007 EF0 41 km 1.0 mi 0
Apr 17, 2004 EF0 27 km 0.2 mi 0
May 30, 1995 EF0 30 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

9 volcanoes within 200 km. Closest: Medicine Lake (67 km).

Name Type Elevation Last Eruption Distance
Medicine Lake Shield 2,412 m (7,913 ft) 1060 67 km
Crater Lake Caldera 2,487 m (8,159 ft) -2850 100 km
Shasta Stratovolcano 4,317 m (14,163 ft) 1250 110 km
Cinnamon Butte Pyroclastic cone(s) 1,956 m (6,417 ft) Unknown 129 km
Devils Garden Volcanic field 1,698 m (5,571 ft) Unknown 153 km
Davis Lake Volcanic field 2,163 m (7,096 ft) -2790 156 km
Newberry Shield 2,434 m (7,986 ft) 690 170 km
Lassen Volcanic Center Stratovolcano 3,187 m (10,456 ft) 1917 190 km
Bachelor Stratovolcano 2,763 m (9,065 ft) -5800 199 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: BOOTLEG (413,496 acres, 2021).

Year Name Acres Burned Distance
2021 BOOTLEG 413,496 58 km
2021 ANTELOPE 141,960 69 km
2021 COUGAR PEAK 95,350 79 km
2012 BARRY POINT 91,487 63 km
2020 CALDWELL 81,870 52 km
2018 WATSON CREEK 62,162 70 km
2020 BRATTAIN 51,472 83 km
2017 STEELE 49,153 55 km
2018 STONE 39,455 92 km
2018 KLAMATHON 38,188 97 km
2014 BEAVER COMPLEX 35,204 72 km
2002 GRIZZLY COMPLEX (WINTER) 33,987 85 km
2017 BLANKET CREEK 32,767 94 km
1992 LONE PINE 28,061 43 km
2002 GRIZZLY COMPLEX (SILVER) 24,340 90 km
1999 PINE 24,124 58 km
1996 AMBROSE COMPLEX (DAMON-LONG) 24,090 73 km
2008 MIDDLE FORK COMPLEX 18,768 95 km
2021 LOG 16,018 74 km
2020 TWO FOUR TWO 14,264 63 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (-0°C) 1.9 in
February 34°F (1°C) 1.5 in
March 38°F (3°C) 1.7 in
April 43°F (6°C) 1.1 in
May 50°F (10°C) 1.1 in
June 57°F (14°C) 0.9 in
July 67°F (19°C) 0.4 in Warmest, Driest
August 65°F (18°C) 0.6 in
September 58°F (14°C) 0.6 in
October 48°F (9°C) 1.2 in
November 37°F (3°C) 2.0 in
December 30°F (-1°C) 2.0 in Coldest, Wettest

Bonanza has a seasonal temperature swing of 37°F / from 30°F in December to 67°F in July. Total annual precipitation is 14.9 inches, with December being the wettest month (2.0") and July the driest (0.4").

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