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Weather & Climate in Millersburg, OR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Millersburg experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 41°F in January while summers reach 68°F in July. The area gets 251 sunny days per year, above the national average. Annual precipitation totals 43.0 inches. The area receives 2.9 inches of snow annually. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 226 feet.
Temperature
41°F Jan (5°C)
68°F Jul (20°C)
| Annual Average | 52.9°F |
| 2% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 251 days/yr |
Geography
| Elevation | 226 ft (69 m) |
| Area | 1.8 sq mi (4.7 km²) |
| Population Density | 748/sq mi |
| Coordinates | 44.6789°N, 123.0725°W |
| Timezone | America/Los_Angeles |
| County | Benton County County |
| Nearest Airport | Mahlon Sweet Field (EUG) 39 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 84.4 / 100 |
| Social Vulnerability | 18.5 / 100 |
| Community Resilience | 97.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Coastal Flood | No Rating |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
175 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 | 54 km | 20 km |
| Jul 12, 2004 | 30 km W of Yachats, Oregon | M4.9 | 119 km | 29 km |
| Aug 19, 2004 | 19 km W of Newport, Oregon | M4.7 | 97 km | 27 km |
| Jun 29, 2002 | 6 km ENE of Government Camp, Oregon | M4.5 | 131 km | 5 km |
| Jul 4, 2015 | 16 km ENE of Springfield, Oregon | M4.1 | 68 km | 8 km |
| Jun 6, 2021 | 6 km NE of Government Camp, Oregon | M3.9 | 131 km | 4 km |
| Apr 24, 2003 | 3 km NW of North Portland, Oregon | M3.9 | 109 km | 17 km |
| Apr 15, 2017 | 43 km WNW of Yachats, Oregon | M3.9 | 126 km | 38 km |
| Feb 8, 1995 | 9 km ESE of Hubbard, Oregon | M3.8 | 59 km | 24 km |
| Jun 29, 2002 | 7 km NE of Government Camp, Oregon | M3.8 | 132 km | 5 km |
| Aug 3, 2006 | 2 km WNW of Cherry Grove, Washington | M3.8 | 130 km | 14 km |
| Mar 20, 2012 | 29 km WNW of Yachats, Oregon | M3.7 | 115 km | 33 km |
| Jun 8, 1993 | 5 km ESE of Scotts Mills, Oregon | M3.7 | 54 km | 19 km |
| Jan 31, 2013 | 3 km ENE of Amboy, Washington | M3.7 | 147 km | 6 km |
| Jul 3, 1992 | 57 km W of Waldport, Oregon | M3.6 | 137 km | 21 km |
| Feb 24, 1999 | 8 km WSW of Molalla, Oregon | M3.6 | 58 km | 34 km |
| May 19, 2019 | 3 km ESE of Rose Lodge, Oregon | M3.6 | 70 km | 44 km |
| Sep 8, 2012 | 8 km N of Scotts Mills, Oregon | M3.5 | 58 km | 24 km |
| Aug 2, 1996 | 4 km S of Scotts Mills, Oregon | M3.5 | 48 km | 29 km |
| Oct 19, 1990 | 6 km NE of Government Camp, Oregon | M3.5 | 132 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
45 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 3 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Dec 14, 2010 | EF2 | 24 km | 5.0 mi | 0 |
| Dec 8, 1993 | EF2 | 68 km | 6.0 mi | 0 |
| Sep 1, 2017 | EF1 | 31 km | 0.7 mi | 0 |
| Jun 13, 2013 | EF1 | 61 km | 0.3 mi | 0 |
| Jun 21, 2003 | EF1 | 21 km | 0.3 mi | 0 |
| Oct 9, 2000 | EF1 | 63 km | 0.1 mi | 0 |
| Oct 9, 2000 | EF1 | 82 km | 0.1 mi | 0 |
| Nov 12, 1991 | EF1 | 81 km | 0.2 mi | 0 |
| Nov 24, 1989 | EF1 | 76 km | 0.3 mi | 0 |
| Mar 8, 1960 | EF1 | 18 km | 1.0 mi | 0 |
| Dec 6, 1951 | EF1 | 57 km | 0.3 mi | 0 |
| Oct 31, 2024 | EF0 | 77 km | 0.2 mi | 0 |
| Jun 18, 2023 | EF0 | 42 km | 0.3 mi | 0 |
| Oct 24, 2022 | EF0 | 55 km | 0.0 mi | 0 |
| Jun 13, 2020 | EF0 | 94 km | 2.0 mi | 0 |
| Oct 29, 2018 | EF0 | 98 km | 0.1 mi | 0 |
| Oct 29, 2018 | EF0 | 10 km | 0.1 mi | 0 |
| Oct 12, 2017 | EF0 | 68 km | 0.6 mi | 0 |
| Apr 14, 2015 | EF0 | 74 km | 0.1 mi | 0 |
| Nov 6, 2009 | EF0 | 83 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
12 volcanoes within 200 km. Closest: Sand Mountain Field (97 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 97 km |
| Jefferson | Stratovolcano | 3,199 m (10,495 ft) | 950 | 101 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 107 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 120 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 133 km |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 135 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 155 km |
| Davis Lake | Volcanic field | 2,163 m (7,096 ft) | -2790 | 159 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 170 km |
| Cinnamon Butte | Pyroclastic cone(s) | 1,956 m (6,417 ft) | Unknown | 178 km |
| Newberry | Shield | 2,434 m (7,986 ft) | 690 | 181 km |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 183 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 | 98 km |
| 2020 | BEACHIE CREEK | 194,619 | 58 km |
| 2020 | HOLIDAY FARM | 174,390 | 74 km |
| 2020 | RIVERSIDE | 138,190 | 84 km |
| 2023 | BEDROCK | 31,692 | 89 km |
| 2021 | GALES | 31,655 | 95 km |
| 2021 | BULL COMPLEX | 26,233 | 84 km |
| 2023 | LOOKOUT | 25,103 | 90 km |
| 2017 | WHITEWATER | 11,758 | 95 km |
| 2018 | TERWILLIGER | 11,400 | 97 km |
| 2017 | JONES | 10,260 | 87 km |
| 2014 | 36 PIT | 5,838 | 90 km |
| 2006 | CASCADE CREST COMPLEX (PUZZLE) | 5,400 | 98 km |
| 1987 | ROCKHOUSE | 5,011 | 42 km |
| 2003 | CLARK | 4,905 | 87 km |
| 2017 | AVENUE | 4,323 | 98 km |
| 2011 | MOTHER LODE | 2,881 | 80 km |
| 2010 | BULL OF THE WOODS | 2,535 | 84 km |
| 2017 | SRZ LITTLE DEVIL | 2,304 | 91 km |
| 2020 | ECHO MTN COMPLEX | 2,161 | 77 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 6.7 in | |
| February | 43°F (6°C) | 5.4 in | |
| March | 47°F (8°C) | 4.7 in | |
| April | 50°F (10°C) | 2.8 in | |
| May | 56°F (13°C) | 2.2 in | |
| June | 61°F (16°C) | 1.5 in | |
| July | 68°F (20°C) | 0.6 in | Warmest, Driest |
| August | 66°F (19°C) | 0.8 in | |
| September | 62°F (17°C) | 1.5 in | |
| October | 54°F (12°C) | 3.2 in | |
| November | 45°F (7°C) | 6.9 in | |
| December | 40°F (5°C) | 7.5 in | Coldest, Wettest |
Millersburg has a seasonal temperature swing of 27°F / from 40°F in December to 68°F in July. Total annual precipitation is 43.7 inches, with December being the wettest month (7.5") and July the driest (0.6").