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Weather & Climate in Loomis, WA

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

Loomis experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 29°F in January while summers reach 72°F in July. The area gets 200 sunny days per year. 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 1,261 feet.

Temperature

29°F Jan (-2°C) 72°F Jul (22°C)
Annual Average49.7°F
8% below US avg
January Average29°F (-2°C)
July Average72°F (22°C)
Sunny Days200 days/yr

Geography

Elevation1,261 ft (384 m)
Area0.9 sq mi (2.3 km²)
Population Density116/sq mi
Coordinates48.8233°N, 119.6397°W
TimezoneAmerica/Los_Angeles
CountyOkanogan County County
Nearest AirportGrant County International (MWH)
113 miles away

Precipitation & Snow

Wettest Month (Dec) 1.57"
Driest Month (Sep) 0.71"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score89.2 / 100
Social Vulnerability89.0 / 100
Community Resilience16.4 / 100

Hazard Breakdown

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

Earthquake History

186 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.

Jun 24, 1997 16 km WNW of Malott, Washington M4.6 54 km 10 km
Aug 17, 2002 39 km ESE of Merritt, Canada M4.5 135 km 10 km
Jun 27, 2013 25 km N of Leavenworth, Washington M4.3 136 km 8 km
Sep 1, 2015 15 km N of Nespelem Community, Washington M4.2 73 km 9 km
Sep 10, 2016 23 km E of Oliver, Canada M3.9 52 km 1 km
Apr 15, 1991 4 km SE of Pateros, Washington M3.9 90 km 11 km
Mar 3, 1998 16 km NNE of Grand Forks, Canada M3.8 102 km 5 km
Jan 26, 1992 9 km SSE of Okanagan Falls, Canada M3.7 50 km 10 km
Jul 4, 1997 8 km NNE of Waterville, Washington M3.7 127 km 7 km
Jun 24, 1997 16 km NW of Malott, Washington M3.6 53 km 7 km
Dec 24, 2000 8 km NNW of Entiat, Washington M3.5 129 km 7 km
Jan 12, 1997 15 km N of Princeton, Canada M3.5 107 km 5 km
Jul 19, 2025 34 km W of Okanagan Falls, Canada M3.4 68 km 7 km
Jun 6, 2002 7 km NW of Entiat, Washington M3.4 132 km 6 km
Jan 24, 1992 4 km WNW of Waterville, Washington M3.4 135 km 6 km
Mar 8, 1992 27 km SW of Princeton, Canada M3.4 95 km 5 km
Apr 28, 2023 38 km SW of Princeton, Canada M3.4 96 km 5 km
Jul 24, 2017 Washington M3.3 128 km 2 km
Mar 28, 1991 8 km W of Entiat, Washington M3.3 137 km -1 km
Jan 14, 2004 2 km S of Manson, Washington M3.3 114 km 1 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

5 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date Rating Distance Path Fatalities
Jul 21, 1997 EF1 87 km 5.0 mi 0
Jul 21, 1997 EF1 87 km 5.0 mi 0
May 30, 1987 EF1 76 km 1.0 mi 0
May 3, 1982 EF1 45 km 0.1 mi 0
Aug 26, 1997 EF0 46 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

7 tsunamis recorded within 500 km. Highest wave on record: 19.8 m (65 ft).

Year Location Cause Max Wave Deaths Distance
1952 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 113 km
1949 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 146 km
2024 COLUMBIA RIVER VALLEY, WA Meteorological 14.3 m — 114 km
1944 COLUMBIA RIVER VALLEY, WA Meteorological 9.1 m — 113 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological 4.8 m — 113 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological — — 113 km
1952 COLUMBIA RIVER VALLEY, WA Meteorological — — 113 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Glacier Peak (134 km).

Name Type Elevation Last Eruption Distance
Glacier Peak Stratovolcano 3,213 m (10,541 ft) 1700 134 km
Baker Stratovolcano(es) 3,285 m (10,778 ft) 1880 159 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: CARLTON COMPLEX (276,249 acres, 2014).

Year Name Acres Burned Distance
2014 CARLTON COMPLEX 276,249 68 km
2015 NORTH STAR 218,547 69 km
2020 COLD SPRINGS 187,561 69 km
2015 TUNK BLOCK 180,111 44 km
2015 LIMEBELT 137,098 35 km
2017 DIAMOND CREEK 117,527 53 km
2006 TRIPOD COMPLEX (SPUR PEAK) 115,123 25 km
2012 BARKER CANYON COMPLEX 85,906 95 km
2003 FAWN PEAK COMPLEX (FAREWELL) 77,444 39 km
2021 CUB CREEK 2 74,601 42 km
2015 BLACK CANYON 61,379 99 km
2021 WHITMORE 59,925 74 km
2006 TRIPOD COMPLEX (TRIPOD) 59,712 41 km
2021 CEDAR CREEK 58,591 68 km
2001 REX CREEK COMPLEX (REX CREEK) 54,456 95 km
2015 STICKPIN 54,119 90 km
2018 CRESCENT MOUNTAIN 53,258 77 km
2006 TATOOSH COMPLEX 48,862 72 km
2002 DEER POINT 41,348 99 km
2021 CHUWEAH CREEK FIRE 37,393 94 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 29°F (-2°C) 1.3 in
February 31°F (-1°C) 1.1 in
March 39°F (4°C) 0.9 in
April 47°F (8°C) 0.9 in
May 55°F (13°C) 1.5 in
June 62°F (16°C) 1.5 in
July 72°F (22°C) 0.9 in Warmest
August 67°F (20°C) 0.9 in
September 58°F (14°C) 0.7 in Driest
October 46°F (8°C) 0.8 in
November 34°F (1°C) 1.4 in
December 24°F (-4°C) 1.6 in Coldest, Wettest

Loomis has a seasonal temperature swing of 48°F / from 24°F in December to 72°F in July. Total annual precipitation is 13.6 inches, with December being the wettest month (1.6") and September the driest (0.7").

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