Weather & Climate in Dayville, OR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dayville experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 37°F in January while summers reach 73°F in July. Annual precipitation totals 9.8 inches (drier than the 38-inch national average). The area receives 33.1 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 49. 52% of days have good air quality. The city sits at an elevation of 2,347 feet.
Temperature
37°F Jan (3°C)
73°F Jul (23°C)
| Annual Average | 52.7°F |
| 2% below US avg | |
| January Average | 37°F (3°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 2,347 ft (715 m) |
| Area | 0.5 sq mi (1.4 km²) |
| Population Density | 357/sq mi |
| Coordinates | 44.4668°N, 119.5322°W |
| Timezone | America/Los_Angeles |
| County | Grant County County |
| Nearest Airport | Grant County Regional/Ogilvie Field (JDA) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 49.0 |
| Rating | Good |
| Good Days % | 51.6% |
| Unhealthy Days | 19 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 32.1 / 100 |
| Social Vulnerability | 80.0 / 100 |
| Community Resilience | 30.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very 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 | Very Low |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
102 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| Jul 14, 2008 | 11 km ESE of Maupin, Oregon | M4.2 | 134 km | 16 km |
| Jan 30, 2000 | 6 km SE of Condon, Oregon | M4.1 | 94 km | -1 km |
| Mar 22, 1997 | 10 km ESE of Condon, Oregon | M3.9 | 92 km | 0 km |
| Jun 14, 2007 | 12 km ESE of Maupin, Oregon | M3.8 | 133 km | 18 km |
| Apr 20, 2009 | 10 km ESE of Maupin, Oregon | M3.6 | 135 km | 15 km |
| Jan 2, 2010 | 10 km ESE of Maupin, Oregon | M3.6 | 135 km | 14 km |
| Feb 1, 2000 | 7 km SE of Condon, Oregon | M3.6 | 93 km | -1 km |
| Mar 1, 2007 | Washington-Oregon border region | M3.6 | 133 km | 23 km |
| Apr 5, 2008 | 12 km ESE of Maupin, Oregon | M3.6 | 134 km | 18 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 |
| Jun 1, 2008 | 11 km ESE of Maupin, Oregon | M3.4 | 134 km | 16 km |
| Feb 4, 2008 | 12 km ESE of Maupin, Oregon | M3.3 | 133 km | 19 km |
| May 2, 2007 | 12 km ESE of Maupin, Oregon | M3.3 | 133 km | 18 km |
| Aug 17, 2000 | 14 km NE of Condon, Oregon | M3.2 | 102 km | 14 km |
| Jun 20, 2008 | 12 km ESE of Maupin, Oregon | M3.2 | 133 km | 19 km |
| Apr 17, 1997 | 9 km ESE of Condon, Oregon | M3.2 | 91 km | 3 km |
| Apr 8, 2007 | 11 km ESE of Maupin, Oregon | M3.2 | 134 km | 21 km |
| Oct 17, 1993 | 33 km SE of Prairie City, Oregon | M3.1 | 88 km | 13 km |
| Mar 20, 2008 | 12 km ESE of Maupin, Oregon | M3.1 | 134 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
4 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.
| Date | Rating | Distance | Path | Fatalities |
| Jul 19, 2004 | EF1 | 53 km | 2.2 mi | 0 |
| Nov 5, 2023 | EF0 | 50 km | 0.2 mi | 0 |
| Jun 8, 2016 | EF0 | 34 km | 0.2 mi | 0 |
| Oct 4, 2003 | EF0 | 37 km | 0.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Nearby Volcanoes
9 volcanoes within 200 km. Closest: Devils Garden (150 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Devils Garden | Volcanic field | 1,698 m (5,571 ft) | Unknown | 150 km |
| Newberry | Shield | 2,434 m (7,986 ft) | 690 | 159 km |
| Diamond Craters | Volcanic field | 1,435 m (4,708 ft) | -5610 | 164 km |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 180 km |
| Jefferson | Stratovolcano | 3,199 m (10,495 ft) | 950 | 181 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 182 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 185 km |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 191 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 198 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
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 | 63 km |
| 2007 | EGLEY COMPLEX (EGLEY) | 139,515 | 73 km |
| 2015 | CANYON CREEK COMPLEX | 109,786 | 57 km |
| 2011 | HANCOCK COMPLEX | 71,495 | 92 km |
| 1990 | PINE SPRINGS BASIN | 71,143 | 94 km |
| 2014 | SOUTH FORK COMPLEX | 66,743 | 22 km |
| 2007 | MONUMENT COMPLEX (RED HILL FIRE) | 54,572 | 55 km |
| 1996 | TOWER | 50,827 | 92 km |
| 2018 | JENNIES PEAK 1039 RN | 47,664 | 73 km |
| 2016 | RAIL | 43,813 | 95 km |
| 1996 | BULL COMPLEX (SUMMIT) | 36,318 | 72 km |
| 2014 | PINE CREEK | 31,033 | 70 km |
| 2015 | CORNER CREEK 0297 PR | 30,303 | 25 km |
| 2024 | WILEY FLAT | 30,255 | 77 km |
| 2001 | MONUMENT COMPLEX (MALLORY) | 29,095 | 54 km |
| 2024 | SERVICE | 25,270 | 63 km |
| 2014 | DONNYBROOK | 23,876 | 85 km |
| 1996 | WHEELER POINT | 22,669 | 57 km |
| 1990 | BUCK SPRINGS | 20,969 | 85 km |
| 2000 | HASH ROCK | 17,163 | 78 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 1.0 in | |
| February | 39°F (4°C) | 0.6 in | |
| March | 45°F (7°C) | 0.9 in | |
| April | 50°F (10°C) | 1.1 in | |
| May | 58°F (14°C) | 1.4 in | Wettest |
| June | 65°F (18°C) | 0.9 in | |
| July | 73°F (23°C) | 0.5 in | Warmest |
| August | 72°F (22°C) | 0.4 in | |
| September | 64°F (18°C) | 0.3 in | Driest |
| October | 53°F (11°C) | 0.8 in | |
| November | 42°F (5°C) | 1.0 in | |
| December | 36°F (2°C) | 1.0 in | Coldest |
Dayville has a seasonal temperature swing of 38°F / from 36°F in December to 73°F in July. Total annual precipitation is 9.8 inches, with May being the wettest month (1.4") and September the driest (0.3").