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Weather & Climate in Ukiah, OR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ukiah experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 36°F in January while summers reach 72°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 15.0 inches (drier than the 38-inch national average). The area receives 10.1 inches of snow annually. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 3,352 feet.
Temperature
36°F Jan (2°C)
72°F Jul (22°C)
| Annual Average | 51.9°F |
| 4% below US avg | |
| January Average | 36°F (2°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 3,352 ft (1,022 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 1,336/sq mi |
| Coordinates | 45.1347°N, 118.9332°W |
| Timezone | America/Los_Angeles |
| County | Umatilla County County |
| Nearest Airport | Eastern Oregon Regional At Pendleton (PDT) 40 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 82.3 / 100 |
| Social Vulnerability | 59.6 / 100 |
| Community Resilience | 15.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
142 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.
| Nov 28, 1991 | 7 km S of Walla Walla East, Washington | M4.3 | 107 km | 9 km |
| Jul 14, 1992 | 6 km S of Walla Walla East, Washington | M4.1 | 107 km | 11 km |
| Jan 30, 2000 | 6 km SE of Condon, Oregon | M4.1 | 94 km | -1 km |
| Aug 7, 1992 | 8 km WSW of Irrigon, Oregon | M3.9 | 96 km | 0 km |
| Mar 22, 1997 | 10 km ESE of Condon, Oregon | M3.9 | 89 km | 0 km |
| Sep 4, 2011 | 14 km N of Richland, Washington | M3.7 | 144 km | 2 km |
| May 18, 2008 | 11 km SSW of Benton City, Washington | M3.7 | 125 km | 20 km |
| Feb 1, 2000 | 7 km SE of Condon, Oregon | M3.6 | 93 km | -1 km |
| Jan 23, 2015 | 3 km N of Cayuse, Oregon | M3.5 | 71 km | 20 km |
| Aug 31, 1999 | Washington-Oregon border region | M3.5 | 91 km | 3 km |
| Jan 30, 2000 | 8 km SE of Condon, Oregon | M3.4 | 92 km | -1 km |
| Oct 15, 2011 | 13 km N of Richland, Washington | M3.4 | 144 km | 1 km |
| Feb 28, 2004 | 10 km WSW of Wallula, Washington | M3.3 | 101 km | 1 km |
| May 1, 2011 | 13 km N of Richland, Washington | M3.3 | 143 km | 2 km |
| Jun 12, 1995 | 13 km N of Richland, Washington | M3.3 | 144 km | 1 km |
| Dec 15, 1991 | 6 km SSW of Walla Walla East, Washington | M3.3 | 107 km | 8 km |
| Aug 27, 2000 | 16 km W of Richland, Oregon | M3.3 | 130 km | 0 km |
| Nov 17, 2013 | 13 km NNE of West Richland, Washington | M3.2 | 144 km | 0 km |
| Jul 25, 2009 | 10 km NW of Brogan, Oregon | M3.2 | 139 km | 7 km |
| Apr 17, 1997 | 9 km ESE of Condon, Oregon | M3.2 | 90 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
18 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.
| Date | Rating | Distance | Path | Fatalities |
| May 6, 2022 | EF1 | 89 km | 2.9 mi | 0 |
| May 6, 2009 | EF1 | 73 km | 1.6 mi | 0 |
| May 19, 2006 | EF1 | 97 km | 0.1 mi | 0 |
| Jul 19, 2004 | EF1 | 35 km | 2.2 mi | 0 |
| Mar 5, 2024 | EF0 | 91 km | 0.2 mi | 0 |
| Nov 5, 2023 | EF0 | 82 km | 0.2 mi | 0 |
| Apr 14, 2011 | EF0 | 69 km | 0.2 mi | 0 |
| Jun 23, 2004 | EF0 | 92 km | 0.1 mi | 0 |
| May 23, 2004 | EF0 | 73 km | 0.1 mi | 0 |
| Oct 4, 2003 | EF0 | 57 km | 0.2 mi | 0 |
| Jul 13, 2002 | EF0 | 63 km | 0.2 mi | 0 |
| Jul 9, 1995 | EF0 | 80 km | 0.1 mi | 0 |
| May 11, 1995 | EF0 | 96 km | 0.1 mi | 0 |
| May 1, 1991 | EF0 | 76 km | 0.1 mi | 0 |
| Jun 21, 1983 | EF0 | 74 km | 0.1 mi | 0 |
| Sep 16, 1975 | EF0 | 93 km | 0.1 mi | 0 |
| May 22, 1964 | EF0 | 89 km | 10.7 mi | 0 |
| Apr 12, 1957 | EF0 | 98 km | 16.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
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 | 30 km |
| 2015 | CANYON CREEK COMPLEX | 109,786 | 93 km |
| 2007 | MONUMENT COMPLEX (RED HILL FIRE) | 54,572 | 42 km |
| 1996 | TOWER | 50,827 | 22 km |
| 2008 | COAL PLANT | 45,801 | 87 km |
| 2016 | RAIL | 43,813 | 99 km |
| 1996 | BULL COMPLEX (SUMMIT) | 36,318 | 49 km |
| 2001 | MONUMENT COMPLEX (MALLORY) | 29,095 | 40 km |
| 2000 | UNNAMED | 27,815 | 46 km |
| 2015 | UNNAMED | 27,736 | 90 km |
| 2024 | SERVICE | 25,270 | 89 km |
| 1996 | WHEELER POINT | 22,669 | 75 km |
| 1996 | UNNAMED | 21,130 | 99 km |
| 2024 | JACK CANYON MUTUAL AID | 18,287 | 33 km |
| 2023 | HAT ROCK | 17,264 | 92 km |
| 2009 | NORTH FORK COMPLEX | 16,461 | 32 km |
| 1987 | RYDER CREEK | 16,269 | 33 km |
| 2002 | ROBERTS CREEK | 14,052 | 98 km |
| 2013 | GROUSE MOUNTAIN | 12,361 | 75 km |
| 2018 | LAKE WALLULA | 11,972 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 36°F (2°C) | 2.2 in | |
| February | 32°F (-0°C) | 1.5 in | |
| March | 36°F (2°C) | 1.7 in | |
| April | 42°F (5°C) | 1.5 in | |
| May | 48°F (9°C) | 1.7 in | |
| June | 55°F (13°C) | 1.3 in | |
| July | 72°F (22°C) | 0.6 in | Warmest, Driest |
| August | 62°F (17°C) | 0.9 in | |
| September | 54°F (12°C) | 0.9 in | |
| October | 46°F (8°C) | 1.5 in | |
| November | 35°F (2°C) | 2.3 in | |
| December | 28°F (-2°C) | 2.4 in | Coldest, Wettest |
Ukiah has a seasonal temperature swing of 44°F / from 28°F in December to 72°F in July. Total annual precipitation is 18.6 inches, with December being the wettest month (2.4") and July the driest (0.6").