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Weather & Climate in Green Bluff, WA

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

Green Bluff experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 32°F in January while summers reach 72°F in July. The area gets 273 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 17.4 inches (drier 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 2,314 feet.

Temperature

32°F Jan (-0°C) 72°F Jul (22°C)
Annual Average49.8°F
8% below US avg
January Average32°F (-0°C)
July Average72°F (22°C)
Sunny Days273 days/yr

Geography

Elevation2,314 ft (705 m)
Area3.0 sq mi (7.6 km²)
Population Density34/sq mi
Coordinates47.8184°N, 117.2748°W
TimezoneAmerica/Los_Angeles
CountySpokane County County
Nearest AirportSpokane International (GEG)
18 miles away

Precipitation & Snow

Annual Rainfall 17.4"
54% below US avg
Wettest Month (Dec) 2.91"
Driest Month (Jul) 0.91"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score90.0 / 100
Social Vulnerability21.0 / 100
Community Resilience75.8 / 100

Hazard Breakdown

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

Earthquake History

91 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

Sep 1, 2015 15 km N of Nespelem Community, Washington M4.2 141 km 9 km
Aug 17, 1994 1 km E of Mullan, Idaho M4.1 119 km 2 km
Nov 11, 2001 3 km NE of Spokane, Washington M4.0 17 km 4 km
Jun 25, 2001 Washington M3.9 18 km 10 km
Apr 24, 2015 8 km WSW of Hope, Idaho M3.9 78 km 17 km
Jun 28, 1998 3 km SE of Genesee, Idaho M3.8 146 km 10 km
Apr 24, 2015 12 km SSW of East Hope, Idaho M3.7 77 km 9 km
Mar 14, 1997 1 km E of Mullan, Idaho M3.6 119 km 2 km
May 30, 1996 3 km SSW of Mullan, Idaho M3.6 117 km 1 km
Jan 20, 2000 21 km ENE of Athol, Idaho M3.5 66 km 5 km
Dec 15, 2012 19 km S of Troy, Montana M3.4 117 km 1 km
Jun 28, 1997 3 km NNW of Mullan, Idaho M3.4 115 km 2 km
Mar 8, 1994 32 km S of Wallace, Idaho M3.4 123 km 5 km
Nov 2, 1996 4 km W of Trout Creek, Montana M3.4 121 km 5 km
Jan 13, 1994 11 km SW of Lind, Washington M3.4 149 km 0 km
Jun 25, 2001 2 km SSE of Town and Country, Washington M3.4 17 km 10 km
Jun 17, 2004 11 km SSE of Washtucna, Washington M3.4 147 km 17 km
Feb 11, 2025 2 km NNW of Mullan, Idaho M3.3 116 km 5 km
Nov 12, 2001 3 km NNE of Spokane, Washington M3.3 17 km 0 km
May 10, 2000 Idaho-Montana border region M3.3 119 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

37 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 5 injuries.

Date Rating Distance Path Fatalities
Apr 5, 1972 EF3 93 km 0.1 mi 0
May 31, 1997 EF2 52 km 5.0 mi 0
Apr 9, 1991 EF2 49 km 1.0 mi 0
Jul 17, 1978 EF2 42 km 0.1 mi 0
May 6, 1957 EF2 38 km 1.5 mi 0
Jun 15, 1954 EF2 44 km 0.5 mi 0
May 6, 2009 EF1 65 km 3.4 mi 0
May 31, 1997 EF1 19 km 5.0 mi 0
May 29, 1994 EF1 89 km 0.1 mi 0
Apr 12, 1984 EF1 11 km 1.0 mi 0
Oct 17, 1983 EF1 43 km 0.5 mi 0
Jul 25, 1983 EF1 91 km 0.2 mi 0
Jun 22, 1981 EF1 20 km 0.1 mi 0
Aug 14, 1980 EF1 85 km 0.1 mi 0
Aug 19, 1978 EF1 73 km 1.9 mi 0
Jun 29, 1970 EF1 32 km 0.1 mi 0
Apr 18, 2024 EF0 28 km 0.0 mi 0
Mar 26, 2024 EF0 74 km 0.0 mi 0
May 6, 2022 EF0 26 km 0.6 mi 0
May 6, 2022 EF0 20 km 2.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

9 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 — 106 km
1949 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 81 km
2024 COLUMBIA RIVER VALLEY, WA Meteorological 14.3 m — 106 km
1944 COLUMBIA RIVER VALLEY, WA Meteorological 9.1 m — 106 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 9.0 m — 57 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological 4.8 m — 106 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 3.6 m — 66 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological — — 106 km
1952 COLUMBIA RIVER VALLEY, WA Meteorological — — 106 km
Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: WHITNEY (127,930 acres, 2020).

Year Name Acres Burned Distance
2020 WHITNEY 127,930 100 km
2015 CARPENTER RD. 62,488 66 km
2019 WILLIAMS FLATS 44,680 93 km
2015 TOWER 24,779 75 km
2008 SWANSON LAKE 18,941 85 km
2021 FORD CORKSCREW 16,179 36 km
1991 UNNAMED 12,401 36 km
2020 KEWA FIELD 11,811 87 km
2023 OREGON 10,957 21 km
2003 RATTLESNAKE CANYON 10,655 84 km
2023 GRAY 10,096 44 km
2016 CAYUSE MTN 9,744 57 km
2014 WATERMELON HILL 9,321 65 km
2015 LOWER FLAT 9,034 86 km
2018 COUGAR 8,708 99 km
2022 WAGNER ROAD 8,155 95 km
2003 HATTEN ROAD 7,247 99 km
2021 TRESTLE CREEK COMPLEX 7,117 96 km
2020 INCHELIUM HIWAY 7,046 91 km
2016 SPOKANE COMPLEX 6,839 36 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (-0°C) 2.6 in
February 33°F (0°C) 2.0 in
March 39°F (4°C) 1.8 in
April 47°F (8°C) 1.5 in
May 54°F (12°C) 1.9 in
June 61°F (16°C) 1.5 in
July 72°F (22°C) 0.9 in Warmest, Driest
August 68°F (20°C) 0.9 in
September 58°F (15°C) 1.0 in
October 47°F (8°C) 1.3 in
November 36°F (2°C) 2.8 in
December 29°F (-2°C) 2.9 in Coldest, Wettest

Green Bluff has a seasonal temperature swing of 43°F / from 29°F in December to 72°F in July. Total annual precipitation is 21.2 inches, with December being the wettest month (2.9") and July the driest (0.9").

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