All Countries
Weather & Climate in Siletz, OR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Siletz experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 37°F in January while summers reach 60°F in July. The area gets 251 sunny days per year, above the national average. Annual precipitation totals 131.9 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 134 feet.
Temperature
37°F Jan (3°C)
60°F Jul (16°C)
| Annual Average | 46.2°F |
| 14% below US avg | |
| January Average | 37°F (3°C) |
| July Average | 60°F (16°C) |
| Sunny Days | 251 days/yr |
Geography
| Elevation | 134 ft (41 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 1,571/sq mi |
| Coordinates | 44.7218°N, 123.9187°W |
| Timezone | America/Los_Angeles |
| County | Lincoln County County |
| Nearest Airport | Mahlon Sweet Field (EUG) 54 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.0 / 100 |
| Social Vulnerability | 84.4 / 100 |
| Community Resilience | 53.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Coastal Flood | Relatively Moderate |
| Tsunami | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
126 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 | 109 km | 20 km |
| Jul 12, 2004 | 30 km W of Yachats, Oregon | M4.9 | 63 km | 29 km |
| Aug 19, 2004 | 19 km W of Newport, Oregon | M4.7 | 31 km | 27 km |
| Apr 4, 1992 | 133 km W of Lincoln City, Oregon | M4.2 | 147 km | 10 km |
| Jul 4, 2015 | 16 km ENE of Springfield, Oregon | M4.1 | 111 km | 8 km |
| Apr 15, 2017 | 43 km WNW of Yachats, Oregon | M3.9 | 64 km | 38 km |
| Apr 24, 2003 | 3 km NW of North Portland, Oregon | M3.9 | 137 km | 17 km |
| Feb 8, 1995 | 9 km ESE of Hubbard, Oregon | M3.8 | 106 km | 24 km |
| Mar 20, 2012 | 29 km WNW of Yachats, Oregon | M3.7 | 57 km | 33 km |
| Jun 8, 1993 | 5 km ESE of Scotts Mills, Oregon | M3.7 | 110 km | 19 km |
| Feb 24, 1999 | 8 km WSW of Molalla, Oregon | M3.6 | 107 km | 34 km |
| Jul 3, 1992 | 57 km W of Waldport, Oregon | M3.6 | 72 km | 21 km |
| May 19, 2019 | 3 km ESE of Rose Lodge, Oregon | M3.6 | 31 km | 44 km |
| Sep 8, 2012 | 8 km N of Scotts Mills, Oregon | M3.5 | 106 km | 24 km |
| Aug 2, 1996 | 4 km S of Scotts Mills, Oregon | M3.5 | 103 km | 29 km |
| Jul 22, 1991 | 8 km N of Bethany, Oregon | M3.5 | 131 km | 19 km |
| Nov 25, 1999 | 5 km NNE of Mount Angel, Oregon | M3.4 | 100 km | 28 km |
| Oct 16, 2017 | 21 km WNW of Vernonia, Oregon | M3.4 | 138 km | 24 km |
| Apr 7, 2014 | 6 km NW of Sherwood, Oregon | M3.3 | 110 km | 19 km |
| Jul 13, 2004 | 32 km W of Yachats, Oregon | M3.3 | 62 km | 29 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
36 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 2 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Dec 14, 2010 | EF2 | 83 km | 5.0 mi | 0 |
| Dec 8, 1993 | EF2 | 98 km | 6.0 mi | 0 |
| Sep 1, 2017 | EF1 | 97 km | 0.7 mi | 0 |
| Jun 13, 2013 | EF1 | 80 km | 0.3 mi | 0 |
| Jun 21, 2003 | EF1 | 60 km | 0.3 mi | 0 |
| Dec 12, 1975 | EF1 | 81 km | 2.0 mi | 0 |
| Mar 8, 1960 | EF1 | 82 km | 1.0 mi | 0 |
| Dec 6, 1951 | EF1 | 81 km | 0.3 mi | 0 |
| Nov 11, 2024 | EF0 | 99 km | 0.3 mi | 0 |
| Oct 31, 2024 | EF0 | 15 km | 0.2 mi | 0 |
| Jun 18, 2023 | EF0 | 82 km | 0.3 mi | 0 |
| Oct 24, 2022 | EF0 | 93 km | 0.0 mi | 0 |
| Oct 29, 2018 | EF0 | 75 km | 0.1 mi | 0 |
| Nov 6, 2009 | EF0 | 33 km | 0.1 mi | 0 |
| Jun 4, 2009 | EF0 | 62 km | 1.5 mi | 0 |
| Sep 28, 2007 | EF0 | 82 km | 1.0 mi | 0 |
| Dec 16, 2006 | EF0 | 87 km | 1.5 mi | 0 |
| Oct 3, 1998 | EF0 | 93 km | 0.1 mi | 0 |
| Sep 18, 1997 | EF0 | 39 km | 0.5 mi | 0 |
| Sep 18, 1997 | EF0 | 51 km | 0.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1700 | CASCADIA SUBDUCTION ZONE | Earthquake | — | 2 | 91 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Sand Mountain Field (162 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 162 km |
| Jefferson | Stratovolcano | 3,199 m (10,495 ft) | 950 | 168 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 172 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 183 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 189 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 193 km |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 196 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
4 wildfires (100+ acres) recorded within 100 km. Largest: ROCKHOUSE (5,011 acres, 1987).
| Year | Name | Acres Burned | Distance |
| 1987 | ROCKHOUSE | 5,011 | 40 km |
| 2020 | ECHO MTN COMPLEX | 2,161 | 33 km |
| 1999 | AUSTA | 1,525 | 81 km |
| 1987 | 87552212 | 1,166 | 44 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 13.6 in | Coldest |
| February | 44°F (7°C) | 10.8 in | |
| March | 46°F (8°C) | 10.0 in | |
| April | 48°F (9°C) | 6.2 in | |
| May | 52°F (11°C) | 4.2 in | |
| June | 56°F (14°C) | 3.0 in | |
| July | 60°F (16°C) | 1.2 in | Driest |
| August | 60°F (16°C) | 1.4 in | Warmest |
| September | 59°F (15°C) | 3.2 in | |
| October | 53°F (12°C) | 6.5 in | |
| November | 46°F (8°C) | 13.3 in | |
| December | 42°F (5°C) | 14.8 in | Wettest |
Siletz has a seasonal temperature swing of 23°F / from 37°F in January to 60°F in August. Total annual precipitation is 88.0 inches, with December being the wettest month (14.8") and July the driest (1.2").