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Weather & Climate in Tri-City, OR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tri-City enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 45°F in January while summers reach 72°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 31.1 inches. The area receives 1.9 inches of snow annually. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 1,252 feet.
Temperature
45°F Jan (7°C)
72°F Jul (22°C)
| Annual Average | 56.7°F |
| 5% above US avg | |
| January Average | 45°F (7°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,252 ft (382 m) |
| Area | 2.8 sq mi (7.2 km²) |
| Population Density | 600/sq mi |
| Coordinates | 42.9893°N, 123.2999°W |
| Timezone | America/Los_Angeles |
| County | Josephine County County |
| Nearest Airport | Roseburg Regional (RBG) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.2 / 100 |
| Social Vulnerability | 66.4 / 100 |
| Community Resilience | 49.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
269 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Sep 21, 1993 | 27 km WNW of Klamath Falls, Oregon | M6.0 | 123 km | 9 km |
| Sep 21, 1993 | 22 km WNW of Klamath Falls, Oregon | M5.9 | 128 km | 9 km |
| Dec 4, 1993 | 20 km WNW of Klamath Falls, Oregon | M5.1 | 131 km | 5 km |
| May 15, 2002 | 9 km W of Klamath Falls, Oregon | M4.3 | 142 km | 6 km |
| Jan 9, 1994 | 12 km WNW of Klamath Falls, Oregon | M4.3 | 139 km | 1 km |
| Jan 19, 1994 | 15 km WNW of Klamath Falls, Oregon | M4.3 | 136 km | -1 km |
| Sep 21, 1993 | 25 km SW of Chiloquin, Oregon | M4.3 | 122 km | -2 km |
| Feb 26, 2009 | 37 km NW of Selma, Oregon | M4.2 | 70 km | 37 km |
| Jul 4, 2015 | 16 km ENE of Springfield, Oregon | M4.1 | 128 km | 8 km |
| Dec 31, 1993 | 14 km WNW of Klamath Falls, Oregon | M4.1 | 136 km | -2 km |
| Sep 23, 1993 | 23 km WNW of Klamath Falls, Oregon | M4.1 | 128 km | 6 km |
| Dec 25, 1993 | 15 km WNW of Klamath Falls, Oregon | M4.0 | 136 km | -2 km |
| Jan 7, 1994 | 12 km WNW of Klamath Falls, Oregon | M4.0 | 138 km | 0 km |
| Nov 17, 1994 | 24 km SW of Chiloquin, Oregon | M3.9 | 123 km | -2 km |
| Sep 21, 1993 | 22 km WNW of Klamath Falls, Oregon | M3.9 | 129 km | 6 km |
| Jan 24, 2014 | 31 km SSE of Powers, Oregon | M3.8 | 68 km | 4 km |
| Sep 21, 1993 | 21 km WNW of Klamath Falls, Oregon | M3.8 | 130 km | -1 km |
| Dec 4, 1993 | 15 km W of Klamath Falls, Oregon | M3.8 | 137 km | 4 km |
| Jan 8, 1994 | 11 km WNW of Klamath Falls, Oregon | M3.8 | 140 km | 1 km |
| Sep 21, 1993 | 19 km WNW of Klamath Falls, Oregon | M3.8 | 133 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
1 tornado (EF0+) recorded within 100 km since 1950. Strongest on record: EF0.
| Date | Rating | Distance | Path | Fatalities |
| Jun 18, 2013 | EF0 | 34 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.1 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1873 | N. CALIFORNIA | Eruption + Earthquake | 3.1 m | — | 124 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
9 volcanoes within 200 km. Closest: Crater Lake (96 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Crater Lake | Caldera | 2,487 m (8,159 ft) | -2850 | 96 km |
| Cinnamon Butte | Pyroclastic cone(s) | 1,956 m (6,417 ft) | Unknown | 101 km |
| Davis Lake | Volcanic field | 2,163 m (7,096 ft) | -2790 | 136 km |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 170 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 177 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 186 km |
| Newberry | Shield | 2,434 m (7,986 ft) | 690 | 186 km |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 190 km |
| Shasta | Stratovolcano | 4,317 m (14,163 ft) | 1250 | 198 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: BISCUIT COMPLEX (BISCUIT) (495,308 acres, 2002).
| Year | Name | Acres Burned | Distance |
| 2002 | BISCUIT COMPLEX (BISCUIT) | 495,308 | 78 km |
| 2018 | KLONDIKE | 178,311 | 79 km |
| 2020 | ARCHIE CREEK | 131,885 | 53 km |
| 1987 | SILVER | 96,698 | 88 km |
| 2018 | TAYLOR CREEK | 57,505 | 62 km |
| 2021 | SMITH | 50,739 | 44 km |
| 2002 | BOULDER | 48,505 | 48 km |
| 2018 | MILES | 40,343 | 52 km |
| 2023 | FLAT | 34,496 | 88 km |
| 2017 | HAPPY DOG | 34,241 | 68 km |
| 2021 | JACK FIRE | 33,747 | 59 km |
| 2020 | S OBENCHAIN | 32,875 | 72 km |
| 2017 | BLANKET CREEK | 32,767 | 89 km |
| 2021 | CHAOS | 29,698 | 79 km |
| 2013 | BIG WINDY COMPLEX | 28,911 | 53 km |
| 2015 | STOUTS CREEK | 27,570 | 30 km |
| 2002 | TIMBERED ROCK | 26,809 | 52 km |
| 2013 | DADS | 25,216 | 35 km |
| 2013 | NORTH RABBIT | 25,085 | 31 km |
| 2023 | ANVIL | 22,261 | 88 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 6.5 in | |
| February | 44°F (7°C) | 5.0 in | |
| March | 47°F (8°C) | 4.8 in | |
| April | 50°F (10°C) | 3.2 in | |
| May | 55°F (13°C) | 2.1 in | |
| June | 62°F (16°C) | 1.1 in | |
| July | 72°F (22°C) | 0.5 in | Warmest, Driest |
| August | 67°F (20°C) | 0.8 in | |
| September | 62°F (17°C) | 1.4 in | |
| October | 54°F (12°C) | 3.1 in | |
| November | 45°F (7°C) | 7.0 in | |
| December | 40°F (5°C) | 7.2 in | Coldest, Wettest |
Tri-City has a seasonal temperature swing of 31°F / from 40°F in December to 72°F in July. Total annual precipitation is 42.7 inches, with December being the wettest month (7.2") and July the driest (0.5").