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Weather & Climate in Tetherow, OR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tetherow experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 34°F in January while summers reach 66°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 10.6 inches (drier than the 38-inch national average). The area receives 21.6 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 3,806 feet.
Temperature
34°F Jan (1°C)
66°F Jul (19°C)
| Annual Average | 47.6°F |
| 12% below US avg | |
| January Average | 34°F (1°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 3,806 ft (1,160 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 352/sq mi |
| Coordinates | 44.0389°N, 121.3665°W |
| Timezone | America/Los_Angeles |
| County | Jefferson County County |
| Nearest Airport | Mahlon Sweet Field (EUG) 92 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 29.9 / 100 |
| Social Vulnerability | 28.7 / 100 |
| Community Resilience | 31.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Volcano | Relatively Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
121 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Mar 25, 1993 | 4 km E of Scotts Mills, Oregon | M5.6 | 148 km | 20 km |
| Jun 29, 2002 | 6 km ENE of Government Camp, Oregon | M4.5 | 146 km | 5 km |
| Jul 14, 2008 | 11 km ESE of Maupin, Oregon | M4.2 | 126 km | 16 km |
| Jul 4, 2015 | 16 km ENE of Springfield, Oregon | M4.1 | 117 km | 8 km |
| Jun 6, 2021 | 6 km NE of Government Camp, Oregon | M3.9 | 147 km | 4 km |
| Jun 14, 2007 | 12 km ESE of Maupin, Oregon | M3.8 | 125 km | 18 km |
| Apr 28, 1999 | 54 km E of Silver Lake, Oregon | M3.8 | 125 km | 22 km |
| Jun 29, 2002 | 7 km NE of Government Camp, Oregon | M3.8 | 147 km | 5 km |
| Jun 8, 1993 | 5 km ESE of Scotts Mills, Oregon | M3.7 | 147 km | 19 km |
| Apr 5, 2008 | 12 km ESE of Maupin, Oregon | M3.6 | 126 km | 18 km |
| Apr 20, 2009 | 10 km ESE of Maupin, Oregon | M3.6 | 126 km | 15 km |
| Mar 1, 2007 | Washington-Oregon border region | M3.6 | 125 km | 23 km |
| Jan 2, 2010 | 10 km ESE of Maupin, Oregon | M3.6 | 126 km | 14 km |
| Aug 2, 1996 | 4 km S of Scotts Mills, Oregon | M3.5 | 148 km | 29 km |
| Oct 19, 1990 | 6 km NE of Government Camp, Oregon | M3.5 | 147 km | 5 km |
| Jun 1, 2008 | 11 km ESE of Maupin, Oregon | M3.4 | 126 km | 16 km |
| Feb 4, 2008 | 12 km ESE of Maupin, Oregon | M3.3 | 126 km | 19 km |
| Sep 20, 1991 | 46 km E of Silver Lake, Oregon | M3.3 | 120 km | 19 km |
| May 2, 2007 | 12 km ESE of Maupin, Oregon | M3.3 | 126 km | 18 km |
| Jul 7, 2003 | 6 km ENE of Government Camp, Oregon | M3.3 | 146 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
9 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.
| Date | Rating | Distance | Path | Fatalities |
| Aug 22, 1989 | EF1 | 15 km | 1.0 mi | 0 |
| Apr 13, 2017 | EF0 | 6 km | 0.1 mi | 0 |
| Jun 9, 2004 | EF0 | 68 km | 0.5 mi | 0 |
| Sep 25, 2001 | EF0 | 92 km | 2.0 mi | 0 |
| May 23, 2001 | EF0 | 53 km | 1.0 mi | 0 |
| Sep 3, 1997 | EF0 | 13 km | 1.0 mi | 0 |
| Jul 16, 1993 | EF0 | 78 km | 0.5 mi | 0 |
| Jun 22, 1983 | EF0 | 7 km | 0.1 mi | 0 |
| May 11, 1970 | EF0 | 92 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Bachelor (27 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 27 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 34 km |
| Newberry | Shield | 2,434 m (7,986 ft) | 690 | 37 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 47 km |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 59 km |
| Davis Lake | Volcanic field | 2,163 m (7,096 ft) | -2790 | 64 km |
| Devils Garden | Volcanic field | 1,698 m (5,571 ft) | Unknown | 71 km |
| Jefferson | Stratovolcano | 3,199 m (10,495 ft) | 950 | 79 km |
| Cinnamon Butte | Pyroclastic cone(s) | 1,956 m (6,417 ft) | Unknown | 107 km |
| Crater Lake | Caldera | 2,487 m (8,159 ft) | -2850 | 138 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 151 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: LIONSHEAD (197,732 acres, 2020).
| Year | Name | Acres Burned | Distance |
| 2020 | LIONSHEAD | 197,732 | 90 km |
| 2020 | HOLIDAY FARM | 174,390 | 91 km |
| 2022 | CEDAR CREEK MF | 136,357 | 68 km |
| 1996 | SIMNASHO | 118,466 | 93 km |
| 2003 | BB COMPLEX (BOOTH) | 91,281 | 62 km |
| 2015 | COUNTY LINE 2 | 68,189 | 88 km |
| 2013 | SUNNYSIDE TURNOFF | 50,028 | 95 km |
| 2011 | HIGH CASCADES | 44,498 | 79 km |
| 1994 | LECLAIRE | 32,087 | 89 km |
| 2023 | BEDROCK | 31,692 | 92 km |
| 2021 | GALES | 31,655 | 84 km |
| 2024 | WILEY FLAT | 30,255 | 85 km |
| 2012 | POLE CREEK | 26,982 | 29 km |
| 2017 | MR SEPARATION | 25,137 | 42 km |
| 2023 | LOOKOUT | 25,103 | 65 km |
| 2017 | MILLI 0843 CS | 24,074 | 36 km |
| 2002 | EYERLY COMPLEX (EYERLY) | 22,358 | 63 km |
| 2003 | DAVIS | 20,683 | 59 km |
| 1996 | SKELETON-EVANS WEST (SKELETON) | 18,844 | 21 km |
| 2000 | HASH ROCK | 17,163 | 84 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 2.8 in | |
| February | 33°F (0°C) | 1.9 in | |
| March | 37°F (3°C) | 1.5 in | |
| April | 41°F (5°C) | 0.9 in | |
| May | 48°F (9°C) | 0.9 in | |
| June | 55°F (13°C) | 0.9 in | |
| July | 66°F (19°C) | 0.6 in | Warmest, Driest |
| August | 61°F (16°C) | 0.7 in | |
| September | 54°F (12°C) | 0.7 in | |
| October | 46°F (8°C) | 1.1 in | |
| November | 35°F (2°C) | 2.4 in | |
| December | 30°F (-1°C) | 2.9 in | Coldest, Wettest |
Tetherow has a seasonal temperature swing of 37°F / from 30°F in December to 66°F in July. Total annual precipitation is 17.4 inches, with December being the wettest month (2.9") and July the driest (0.6").