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Weather & Climate in Unity, OR

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Unity has a cool climate with an average annual temperature of 43°F (6°C). Winters average 25°F in January while summers reach 63°F in July. The area gets 276 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 20.8 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 3,981 feet.

Temperature

25°F Jan (-4°C) 63°F Jul (17°C)
Annual Average42.6°F
21% below US avg
January Average25°F (-4°C)
July Average63°F (17°C)
Sunny Days276 days/yr

Geography

Elevation3,981 ft (1,213 m)
Area0.7 sq mi (1.7 km²)
Population Density36/sq mi
Coordinates44.4516°N, 118.1863°W
TimezoneAmerica/Los_Angeles
CountyBaker County County
Nearest AirportGrant County Regional/Ogilvie Field (JDA)
39 miles away

Precipitation & Snow

Annual Rainfall 20.8"
45% below US avg
Wettest Month (Dec) 2.13"
Driest Month (Jul) 0.59"

Air Quality

AQI Median32.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score48.2 / 100
Social Vulnerability69.4 / 100
Community Resilience46.0 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively Low
Wildfire Relatively Moderate
Flood Relatively Low
Hail Relatively Low
Strong Wind Very Low
Heat Wave Relatively Low
Winter Weather Relatively Moderate
Lightning Very Low
Ice Storm Very Low
Drought Very Low
Cold Wave Very Low
Landslide Relatively Low
Volcano Very Low
Avalanche Relatively High
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

57 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.

Oct 27, 1994 11 km SE of Halfway, Oregon M4.0 102 km 10 km
Jan 23, 2015 3 km N of Cayuse, Oregon M3.5 143 km 20 km
Aug 27, 2000 16 km W of Richland, Oregon M3.3 72 km 0 km
Jun 16, 1992 10 km ESE of Halfway, Oregon M3.3 104 km 5 km
Jul 20, 1998 9 km ESE of Halfway, Oregon M3.3 104 km 12 km
Jan 26, 1992 28 km ENE of Halfway, Oregon M3.2 126 km 5 km
Jul 19, 1998 10 km ESE of Halfway, Oregon M3.2 103 km 11 km
Jul 25, 2009 10 km NW of Brogan, Oregon M3.2 49 km 7 km
Aug 14, 2017 19 km NNW of Halfway, Oregon M3.1 101 km 8 km
Jul 13, 2000 7 km NW of Unity, Oregon M3.1 8 km 19 km
Oct 1, 2003 25 km W of Richland, Oregon M3.1 64 km 21 km
Oct 17, 1993 33 km SE of Prairie City, Oregon M3.1 35 km 13 km
Oct 25, 1994 9 km ESE of Halfway, Oregon M3.1 102 km 10 km
Jul 21, 1998 6 km N of Halfway, Oregon M3.1 100 km -1 km
Jul 20, 1998 10 km ESE of Halfway, Oregon M3.1 103 km 11 km
Mar 8, 2023 8 km WSW of Richland, Oregon M3.0 79 km 9 km
Mar 3, 1999 11 km ESE of Joseph, Oregon M3.0 131 km 18 km
Jul 20, 1998 6 km N of Halfway, Oregon M3.0 100 km -1 km
May 23, 1999 19 km NE of Halfway, Oregon M3.0 117 km 5 km
Nov 6, 2002 21 km SE of Joseph, Oregon M3.0 128 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

12 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date Rating Distance Path Fatalities
Jul 19, 2004 EF1 93 km 2.2 mi 0
Apr 30, 1997 EF1 97 km 3.0 mi 0
May 17, 1996 EF1 99 km 5.5 mi 0
Jul 9, 1990 EF1 98 km 0.1 mi 0
Nov 5, 2023 EF0 58 km 0.2 mi 0
Jun 23, 2004 EF0 55 km 0.1 mi 0
Oct 4, 2003 EF0 80 km 0.2 mi 0
Sep 13, 2001 EF0 99 km 1.0 mi 0
Apr 30, 1997 EF0 76 km 1.0 mi 0
May 17, 1996 EF0 98 km 0.1 mi 0
May 11, 1995 EF0 47 km 0.1 mi 0
Sep 16, 1975 EF0 51 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Jordan Craters (156 km).

Name Type Elevation Last Eruption Distance
Jordan Craters Volcanic field 1,473 m (4,833 ft) -1250 156 km
Diamond Craters Volcanic field 1,435 m (4,708 ft) -5610 157 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: COW VALLEY (134,642 acres, 2024).

Year Name Acres Burned Distance
2024 COW VALLEY 134,642 55 km
2015 CANYON CREEK COMPLEX 109,786 55 km
2015 CORNET-WINDY RIDGE 102,553 40 km
2000 JACKSON 80,733 86 km
1996 TOWER 50,827 76 km
2015 BENDIRE COMPLEX 49,260 51 km
2007 IRISH SPRING 47,845 30 km
2020 INDIAN CREEK 46,275 65 km
2016 RAIL 43,813 17 km
2022 WILLOW CREEK 38,585 80 km
1996 BULL COMPLEX (SUMMIT) 36,318 51 km
2007 BARTLETT MOUNTAIN 31,845 83 km
2024 THOMPSON 31,066 68 km
2007 JUNIPER RESERVOIR 28,455 70 km
1986 TUB MTN 27,008 90 km
2021 BLACK BUTTE 24,736 39 km
2007 WARM SPRINGS 24,611 91 km
2005 SNAKE ONE 24,056 88 km
2002 MONUMENT-MALHEUR COMPLEX (MONUMENT) 23,860 20 km
2005 DOUBLE MOUNTAIN 23,860 93 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 25°F (-4°C) 1.9 in
February 27°F (-3°C) 1.3 in
March 33°F (0°C) 1.3 in
April 39°F (4°C) 1.1 in
May 46°F (8°C) 1.3 in
June 54°F (12°C) 1.4 in
July 63°F (17°C) 0.6 in Warmest, Driest
August 63°F (17°C) 0.9 in
September 54°F (12°C) 0.8 in
October 45°F (7°C) 0.9 in
November 33°F (1°C) 1.8 in
December 25°F (-4°C) 2.1 in Coldest, Wettest

Unity has a seasonal temperature swing of 39°F / from 25°F in December to 63°F in July. Total annual precipitation is 15.6 inches, with December being the wettest month (2.1") and July the driest (0.6").

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