Weather & Climate in Scappoose, OR

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

Scappoose experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 40°F in January while summers reach 68°F in July. The area gets 251 sunny days per year, above the national average. Annual precipitation totals 42.3 inches. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 57 feet.

Temperature

40°F Jan (5°C) 68°F Jul (20°C)

Annual Average	53.0°F
	2% below US avg
January Average	40°F (5°C)
July Average	68°F (20°C)
Sunny Days	251 days/yr

Geography

Elevation	57 ft (17 m)
Area	2.7 sq mi (7.1 km²)
Population Density	2,354/sq mi
Coordinates	45.7581°N, 122.8731°W
Timezone	America/Los_Angeles
County	Clark County County
Nearest Airport	Portland International (PDX) 18 miles away

Precipitation & Snow

Annual Rainfall 42.3"

11% above US avg

Wettest Month (Dec) 9.33"

Driest Month (Jul) 0.91"

Air Quality

AQI Median	32.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	92.2 / 100
Social Vulnerability	12.2 / 100
Community Resilience	70.3 / 100

Hazard Breakdown

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

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

Earthquake History

1,012 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	83 km	20 km
Jun 29, 2002	6 km ENE of Government Camp, Oregon	M4.5	104 km	5 km
Jul 22, 2001	4 km WSW of DuPont, Washington	M4.3	149 km	52 km
Feb 14, 2011	31 km S of Morton, Washington	M4.3	77 km	4 km
May 20, 1995	15 km NNE of Ashford, Washington	M4.1	144 km	12 km
Aug 16, 2004	16 km ENE of Packwood, Washington	M4.0	148 km	-1 km
Jun 6, 2021	6 km NE of Government Camp, Oregon	M3.9	103 km	4 km
Oct 1, 2004	37 km NNE of Amboy, Washington	M3.9	72 km	-1 km
Apr 24, 2003	3 km NW of North Portland, Oregon	M3.9	17 km	17 km
Jun 25, 2004	17 km W of Packwood, Washington	M3.9	123 km	-1 km
Jan 3, 2018	37 km SSE of Morton, Washington	M3.9	84 km	10 km
Feb 8, 1995	9 km ESE of Hubbard, Oregon	M3.8	70 km	24 km
Aug 3, 2006	2 km WNW of Cherry Grove, Washington	M3.8	21 km	14 km
Jun 29, 2002	7 km NE of Government Camp, Oregon	M3.8	104 km	5 km
Jun 8, 1993	5 km ESE of Scotts Mills, Oregon	M3.7	84 km	19 km
Oct 1, 2004	36 km NNE of Amboy, Washington	M3.7	71 km	-2 km
Jul 13, 1995	13 km ENE of Ashford, Washington	M3.7	141 km	7 km
Aug 23, 2013	24 km SSE of Mossyrock, Washington	M3.7	73 km	14 km
Jan 31, 2013	3 km ENE of Amboy, Washington	M3.7	40 km	6 km
Aug 5, 2006	37 km NNE of Amboy, Washington	M3.6	72 km	-1 km

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

Tornado History

66 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 6 fatalities, 303 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 5, 1972	EF3	26 km	8.7 mi	6
Oct 14, 2016	EF2	83 km	0.7 mi	0
Dec 8, 1993	EF2	54 km	6.0 mi	0
Dec 10, 2015	EF1	26 km	0.8 mi	0
Oct 23, 2014	EF1	42 km	1.3 mi	0
Jun 13, 2013	EF1	65 km	0.3 mi	0
Jan 10, 2008	EF1	17 km	10.1 mi	0
Oct 9, 2000	EF1	54 km	0.1 mi	0
Oct 9, 2000	EF1	70 km	0.1 mi	0
Nov 12, 1991	EF1	43 km	0.2 mi	0
Nov 12, 1991	EF1	45 km	0.2 mi	0
Jun 29, 1989	EF1	21 km	1.6 mi	0
Mar 28, 1985	EF1	47 km	0.2 mi	0
Oct 13, 1984	EF1	20 km	3.0 mi	0
Aug 16, 1978	EF1	3 km	0.2 mi	0
Dec 12, 1975	EF1	83 km	2.0 mi	0
Oct 3, 1967	EF1	92 km	0.5 mi	0
Apr 12, 1957	EF1	63 km	2.5 mi	0
Nov 11, 2024	EF0	85 km	0.3 mi	0
Oct 28, 2024	EF0	42 km	0.2 mi	0

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

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 250.0 m (820 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1980	WASHINGTON	Explosion	250.0 m	61	73 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

9 volcanoes within 200 km. Closest: West Crater (63 km).

Name	Type	Elevation	Last Eruption	Distance
West Crater	Volcanic field	1,329 m (4,360 ft)	-5750	63 km
St. Helens	Stratovolcano	2,549 m (8,363 ft)	2008	73 km
Indian Heaven	Shield(s)	1,806 m (5,925 ft)	-6250	84 km
Hood	Stratovolcano	3,426 m (11,240 ft)	1866	101 km
Adams	Stratovolcano	3,742 m (12,277 ft)	950	118 km
Jefferson	Stratovolcano	3,199 m (10,495 ft)	950	147 km
Rainier	Stratovolcano	4,392 m (14,409 ft)	1450	149 km
Sand Mountain Field	Pyroclastic cone(s)	1,664 m (5,459 ft)	-950	170 km
Belknap	Shield(s)	2,095 m (6,873 ft)	480	183 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

10 wildfires (100+ acres) recorded within 100 km. Largest: RIVERSIDE (138,190 acres, 2020).

Year	Name	Acres Burned	Distance
2020	RIVERSIDE	138,190	86 km
2017	EAGLE CREEK	48,816	74 km
2020	BIG HOLLOW	24,243	65 km
2011	DOLLAR LAKE	6,069	98 km
2014	36 PIT	5,838	81 km
2022	SIOUXON	2,551	62 km
2023	CAMP CREEK	2,056	71 km
2022	NAKIA CREEK	1,737	45 km
2020	DOWTY RD	1,424	60 km
1991	FALLS	1,389	60 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	40°F (5°C)	8.7 in
February	41°F (5°C)	6.9 in
March	45°F (7°C)	5.9 in
April	48°F (9°C)	4.0 in
May	54°F (12°C)	2.9 in
June	58°F (15°C)	2.1 in
July	68°F (20°C)	0.9 in	Warmest, Driest
August	64°F (18°C)	1.3 in
September	60°F (15°C)	2.4 in
October	52°F (11°C)	4.4 in
November	44°F (6°C)	8.6 in
December	39°F (4°C)	9.3 in	Coldest, Wettest

Scappoose has a seasonal temperature swing of 29°F / from 39°F in December to 68°F in July. Total annual precipitation is 57.3 inches, with December being the wettest month (9.3") and July the driest (0.9").

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