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Weather & Climate in Marblemount, WA

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

Marblemount experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 37°F in January while summers reach 64°F in July. The area gets 166 sunny days per year, below the national average of 205. Annual precipitation totals 83.0 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 28 / among the cleanest air in the country. The city sits at an elevation of 357 feet.

Temperature

37°F Jan (3°C) 64°F Jul (18°C)
Annual Average49.8°F
8% below US avg
January Average37°F (3°C)
July Average64°F (18°C)
Sunny Days166 days/yr

Geography

Elevation357 ft (109 m)
Area1.0 sq mi (2.5 km²)
Population Density86/sq mi
Coordinates48.5418°N, 121.4396°W
TimezoneAmerica/Los_Angeles
CountySkagit County County
Nearest AirportSkagit Regional (MVW)
45 miles away

Precipitation & Snow

Annual Rainfall 83.0"
118% above US avg
Wettest Month (Nov) 11.38"
Driest Month (Jul) 1.81"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score88.8 / 100
Social Vulnerability31.7 / 100
Community Resilience73.4 / 100

Hazard Breakdown

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

Earthquake History

626 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.

May 3, 1996 8 km NNE of Lake Marcel-Stillwater, Washington M5.4 93 km 4 km
Apr 14, 1990 4 km ENE of Deming, Washington M5.0 63 km 12 km
Jan 29, 1995 3 km WSW of Des Moines, Washington M5.0 146 km 15 km
Jun 23, 1997 2 km NE of Enetai, Washington M4.9 134 km 13 km
Jan 30, 2009 6 km ESE of Lofall, Washington M4.7 119 km 62 km
Jun 24, 1997 16 km WNW of Malott, Washington M4.6 116 km 10 km
Jul 12, 2019 2 km S of Roosevelt, Washington M4.6 86 km 29 km
Mar 3, 2025 2025 Orcas Island, Washington M4.5 101 km 16 km
Apr 2, 1990 2 km ENE of Deming, Washington M4.3 64 km 0 km
Jun 18, 1994 11 km SE of Skykomish, Washington M4.3 103 km -1 km
Jun 27, 2013 25 km N of Leavenworth, Washington M4.3 97 km 8 km
Sep 21, 2002 9 km SW of Friday Harbor, Washington M4.1 124 km 23 km
Apr 14, 1990 2 km ESE of Deming, Washington M4.0 63 km 3 km
Apr 3, 1990 3 km ENE of Deming, Washington M4.0 63 km 1 km
Sep 26, 2024 12 km E of Saanichton, Canada M4.0 133 km 52 km
Dec 27, 2012 12 km E of North Saanich, Canada M4.0 134 km 54 km
Jul 1, 2009 4 km SE of Coupeville, Washington M4.0 97 km 58 km
Aug 8, 2023 9 km NNE of Snoqualmie, Washington M3.9 107 km 16 km
Apr 15, 1991 4 km SE of Pateros, Washington M3.9 130 km 11 km
Jun 27, 1997 3 km SW of Bainbridge Island, Washington M3.9 134 km 1 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

8 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.

Date Rating Distance Path Fatalities
May 13, 1986 EF2 58 km 0.3 mi 0
Nov 24, 1970 EF2 75 km 0.3 mi 0
May 18, 2005 EF1 71 km 0.2 mi 0
Oct 26, 1971 EF1 73 km 3.0 mi 0
Jun 16, 2006 EF0 78 km 0.5 mi 0
Jun 5, 2004 EF0 69 km 0.1 mi 0
Apr 27, 2004 EF0 77 km 2.7 mi 0
Aug 24, 1997 EF0 85 km 0.5 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

2 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 — 111 km
1820 CAMANO ISLAND, WA Meteorological — — 87 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Baker (38 km).

Name Type Elevation Last Eruption Distance
Baker Stratovolcano(es) 3,285 m (10,778 ft) 1880 38 km
Glacier Peak Stratovolcano 3,213 m (10,541 ft) 1700 54 km
Garibaldi Stratovolcano 2,678 m (8,786 ft) -8060 184 km
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 189 km
Garibaldi Lake Volcanic field 2,316 m (7,598 ft) Unknown 192 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: DIAMOND CREEK (117,527 acres, 2017).

Year Name Acres Burned Distance
2017 DIAMOND CREEK 117,527 92 km
2003 FAWN PEAK COMPLEX (FAREWELL) 77,444 99 km
2021 CUB CREEK 2 74,601 95 km
2015 WOLVERINE 66,329 74 km
2021 CEDAR CREEK 58,591 75 km
2001 REX CREEK COMPLEX (REX CREEK) 54,456 84 km
2018 CRESCENT MOUNTAIN 53,258 75 km
2006 TATOOSH COMPLEX 48,862 79 km
2004 POT PEAK-SISI RIDGE COMPLEX 37,603 99 km
2022 PARKS 34,621 76 km
2018 MCLEOD 24,738 82 km
2003 NEEDLES 21,458 64 km
2022 BOLT CREEK 15,211 86 km
2014 DUNCAN 13,714 87 km
2015 TWISP RIVER 11,263 91 km
2007 DOMKE LAKE COMPLEX 10,090 77 km
2006 TINPAN 9,044 73 km
2017 UNO PEAK 8,878 91 km
2014 UPPER FALLS 8,846 90 km
2002 QUARTZ MT. COMPLEX (MIDDLE MOUNTAIN) 8,173 80 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 37°F (3°C) 10.8 in
February 35°F (2°C) 7.8 in
March 38°F (3°C) 6.7 in
April 43°F (6°C) 4.6 in
May 50°F (10°C) 3.5 in
June 55°F (13°C) 2.7 in
July 64°F (18°C) 1.8 in Warmest, Driest
August 61°F (16°C) 2.1 in
September 55°F (13°C) 3.5 in
October 46°F (8°C) 6.8 in
November 37°F (3°C) 11.4 in Wettest
December 31°F (-0°C) 11.0 in Coldest

Marblemount has a seasonal temperature swing of 33°F / from 31°F in December to 64°F in July. Total annual precipitation is 72.8 inches, with November being the wettest month (11.4") and July the driest (1.8").

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