Weather & Climate in Dallas, OR

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

Dallas experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 41°F in January while summers reach 67°F in July. The area gets 251 sunny days per year, above the national average. Annual precipitation totals 47.8 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 320 feet.

Temperature

41°F Jan (5°C) 67°F Jul (20°C)

Annual Average	53.1°F
	2% below US avg
January Average	41°F (5°C)
July Average	67°F (20°C)
Sunny Days	251 days/yr

Geography

Elevation	320 ft (98 m)
Area	4.8 sq mi (12.5 km²)
Population Density	3,506/sq mi
Coordinates	44.9221°N, 123.3129°W
Timezone	America/Los_Angeles
County	Polk County County
Nearest Airport	Mahlon Sweet Field (EUG) 55 miles away

Precipitation & Snow

Annual Rainfall 47.8"

26% above US avg

Wettest Month (Dec) 8.94"

Driest Month (Jul) 0.55"

Air Quality

AQI Median	32.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	72.8 / 100
Social Vulnerability	18.2 / 100
Community Resilience	64.5 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Relatively Moderate
Wildfire	Very Low
Flood	Relatively Low
Hail	Very Low
Strong Wind	Very Low
Heat Wave	Relatively Moderate
Winter Weather	Relatively Low
Lightning	Relatively Low
Ice Storm	Relatively Moderate
Drought	Very Low
Cold Wave	Very Low
Landslide	Relatively Low
Coastal Flood	No Rating
Volcano	Very Low
Avalanche	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

186 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	57 km	20 km
Jul 12, 2004	30 km W of Yachats, Oregon	M4.9	114 km	29 km
Aug 19, 2004	19 km W of Newport, Oregon	M4.7	83 km	27 km
Jun 29, 2002	6 km ENE of Government Camp, Oregon	M4.5	136 km	5 km
Jul 4, 2015	16 km ENE of Springfield, Oregon	M4.1	100 km	8 km
Jun 6, 2021	6 km NE of Government Camp, Oregon	M3.9	135 km	4 km
Apr 15, 2017	43 km WNW of Yachats, Oregon	M3.9	117 km	38 km
Apr 24, 2003	3 km NW of North Portland, Oregon	M3.9	91 km	17 km
Feb 8, 1995	9 km ESE of Hubbard, Oregon	M3.8	53 km	24 km
Aug 3, 2006	2 km WNW of Cherry Grove, Washington	M3.8	112 km	14 km
Jun 29, 2002	7 km NE of Government Camp, Oregon	M3.8	136 km	5 km
Jun 8, 1993	5 km ESE of Scotts Mills, Oregon	M3.7	58 km	19 km
Mar 20, 2012	29 km WNW of Yachats, Oregon	M3.7	109 km	33 km
Jan 31, 2013	3 km ENE of Amboy, Washington	M3.7	132 km	6 km
Feb 24, 1999	8 km WSW of Molalla, Oregon	M3.6	55 km	34 km
Jul 3, 1992	57 km W of Waldport, Oregon	M3.6	125 km	21 km
May 19, 2019	3 km ESE of Rose Lodge, Oregon	M3.6	42 km	44 km
Sep 8, 2012	8 km N of Scotts Mills, Oregon	M3.5	54 km	24 km
Aug 2, 1996	4 km S of Scotts Mills, Oregon	M3.5	52 km	29 km
Jul 22, 1991	8 km N of Bethany, Oregon	M3.5	87 km	19 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

55 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 6 fatalities, 302 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 5, 1972	EF3	92 km	8.7 mi	6
Dec 14, 2010	EF2	35 km	5.0 mi	0
Dec 8, 1993	EF2	49 km	6.0 mi	0
Sep 1, 2017	EF1	61 km	0.7 mi	0
Jun 13, 2013	EF1	34 km	0.3 mi	0
Jan 10, 2008	EF1	97 km	10.1 mi	0
Jun 21, 2003	EF1	13 km	0.3 mi	0
Oct 9, 2000	EF1	73 km	0.1 mi	0
Oct 9, 2000	EF1	60 km	0.1 mi	0
Nov 12, 1991	EF1	66 km	0.2 mi	0
Dec 12, 1975	EF1	72 km	2.0 mi	0
Mar 8, 1960	EF1	38 km	1.0 mi	0
Apr 12, 1957	EF1	96 km	2.5 mi	0
Dec 6, 1951	EF1	83 km	0.3 mi	0
Nov 11, 2024	EF0	92 km	0.3 mi	0
Oct 31, 2024	EF0	67 km	0.2 mi	0
Jun 18, 2023	EF0	72 km	0.3 mi	0
Oct 24, 2022	EF0	42 km	0.0 mi	0
Jun 13, 2020	EF0	86 km	2.0 mi	0
Sep 8, 2019	EF0	84 km	0.1 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
1700	CASCADIA SUBDUCTION ZONE	Earthquake	—	2	133 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

10 volcanoes within 200 km. Closest: Jefferson (123 km).

Name	Type	Elevation	Last Eruption	Distance
Jefferson	Stratovolcano	3,199 m (10,495 ft)	950	123 km
Sand Mountain Field	Pyroclastic cone(s)	1,664 m (5,459 ft)	-950	125 km
Belknap	Shield(s)	2,095 m (6,873 ft)	480	136 km
Hood	Stratovolcano	3,426 m (11,240 ft)	1866	137 km
West Crater	Volcanic field	1,329 m (4,360 ft)	-5750	144 km
Three Sisters	Complex	3,159 m (10,364 ft)	440	151 km
Indian Heaven	Shield(s)	1,806 m (5,925 ft)	-6250	162 km
Bachelor	Stratovolcano	2,763 m (9,065 ft)	-5800	166 km
St. Helens	Stratovolcano	2,549 m (8,363 ft)	2008	167 km
Davis Lake	Volcanic field	2,163 m (7,096 ft)	-2790	192 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

10 wildfires (100+ acres) recorded within 100 km. Largest: BEACHIE CREEK (194,619 acres, 2020).

Year	Name	Acres Burned	Distance
2020	BEACHIE CREEK	194,619	74 km
2020	RIVERSIDE	138,190	89 km
2014	36 PIT	5,838	93 km
1987	ROCKHOUSE	5,011	14 km
2011	MOTHER LODE	2,881	96 km
2010	BULL OF THE WOODS	2,535	100 km
2020	ECHO MTN COMPLEX	2,161	50 km
2020	DOWTY RD	1,424	86 km
1987	87552212	1,166	15 km
1987	87791147	1,048	93 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	41°F (5°C)	7.9 in
February	43°F (6°C)	6.3 in
March	47°F (8°C)	5.6 in
April	50°F (10°C)	3.1 in
May	55°F (13°C)	2.1 in
June	60°F (16°C)	1.3 in
July	67°F (20°C)	0.6 in	Warmest, Driest
August	66°F (19°C)	0.8 in
September	62°F (17°C)	1.6 in
October	53°F (12°C)	3.5 in
November	45°F (7°C)	7.7 in
December	40°F (4°C)	8.9 in	Coldest, Wettest

Dallas has a seasonal temperature swing of 27°F / from 40°F in December to 67°F in July. Total annual precipitation is 49.4 inches, with December being the wettest month (8.9") and July the driest (0.6").

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