Sign In Register

Duncan, BC

Full City Profile · British Columbia

2.2 /5.0
C Fair
5,047 Population 6,331/sq mi density
$53,200 Median Income $37,640 per capita
$400,000 Home Value
$980 Median Rent 27.8% income on rent
51°F Avg Temperature 228 sunny days/yr
C
Overall
2.2 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.2 / 5.0
$53,200 median income, 9.5% unemployment
C
Affordability
2.4 / 5.0
$400,000 home value, $980/mo rent
C+
Safety
2.5 / 5.0
D
Education
1.8 / 5.0
9.7% bachelor's degree or higher
Duncan experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 40°F in January while summers reach 68°F in July. The area gets 228 sunny days per year. Annual precipitation totals 49.8 inches. The area receives 37.4 inches of snow annually.

Temperature

40°F Jan (4°C) 68°F Jul (20°C)
Annual Average51.2°F
5% below US avg
January Average40°F (4°C)
July Average68°F (20°C)
Sunny Days228 days/yr

Geography

Elevation46 ft (14 m)
Area0.8 sq mi (2.1 km²)
Population Density6,331/sq mi
Coordinates48.7829°N, 123.7027°W
TimezoneAmerica/Vancouver

Precipitation & Snow

Annual Rainfall 49.8"
31% above US avg
Snowfall 37.4"
Wettest Month (Jan) 9.96"
Driest Month (Jul) 1.06"

Air Quality

Earthquake History

407 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.0. Most recent: M2.9 on Aug 21, 2025.

Apr 14, 1990 4 km ENE of Deming, Washington M5.0 113 km
Apr 25, 2003 26 km W of Brinnon, Washington M4.8 128 km
Feb 21, 2025 28 km W of Squamish, Canada M4.8 102 km
Jan 8, 2015 19 km E of Tofino, Canada M4.8 148 km
Jan 30, 2009 6 km ESE of Lofall, Washington M4.7 138 km
Jan 24, 2020 46 km WNW of Neah Bay, Washington M4.5 112 km
Mar 3, 2025 2025 Orcas Island, Washington M4.5 69 km
Jun 24, 1997 19 km SSW of Gibsons, Canada M4.4 51 km
Apr 2, 1990 2 km ENE of Deming, Washington M4.3 111 km
Feb 19, 1991 31 km E of Squamish, Canada M4.3 124 km
Jan 23, 2001 9 km NNW of Ucluelet, Canada M4.3 139 km
Sep 21, 2002 9 km SW of Friday Harbor, Washington M4.1 54 km
Feb 22, 1996 31 km NNE of South Pender Harbour, Canada M4.1 125 km
Apr 3, 1990 3 km ENE of Deming, Washington M4.0 112 km
Apr 14, 1990 2 km ESE of Deming, Washington M4.0 111 km
Dec 27, 2012 12 km E of North Saanich, Canada M4.0 36 km
Sep 26, 2024 12 km E of Saanichton, Canada M4.0 40 km
Jul 1, 2009 4 km SE of Coupeville, Washington M4.0 102 km
Apr 7, 2001 36 km NNW of Neah Bay, Washington M3.9 77 km
Nov 20, 1994 26 km N of Ucluelet, Canada M3.9 141 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

4 tsunamis recorded within 500 km. Highest wave on record: 38.0 m (125 ft).

Year Location Cause Max Wave Deaths Distance
2007 CHEHALIS LAKE, CHILLIWACK Meteorological 38.0 m — 145 km
1946 BRITISH COLUMBIA Eruption + Earthquake 9.0 m 1 150 km
1891 WASHINGTON Eruption + Earthquake 2.4 m — 88 km
1820 CAMANO ISLAND, WA Meteorological — — 128 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

4 volcanoes within 200 km. Closest: Garibaldi (129 km).

Name Type Elevation Last Eruption Distance
Garibaldi Stratovolcano 2,678 m (8,786 ft) -8060 129 km
Garibaldi Lake Volcanic field 2,316 m (7,598 ft) Unknown 138 km
Baker Stratovolcano(es) 3,285 m (10,778 ft) 1880 139 km
Cayley Volcanic Field Volcanic field 2,375 m (7,792 ft) Unknown 152 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 40°F (4°C) 10.0 in Wettest
February 39°F (4°C) 6.1 in
March 42°F (5°C) 5.7 in
April 46°F (8°C) 3.6 in
May 52°F (11°C) 2.3 in
June 57°F (14°C) 1.8 in
July 68°F (20°C) 1.1 in Warmest, Driest
August 62°F (17°C) 1.5 in
September 57°F (14°C) 1.7 in
October 49°F (9°C) 5.6 in
November 41°F (5°C) 9.7 in
December 37°F (3°C) 9.6 in Coldest

Duncan has a seasonal temperature swing of 32°F / from 37°F in December to 68°F in July. Total annual precipitation is 58.4 inches, with January being the wettest month (10.0") and July the driest (1.1").

View full weather details →