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Weather & Climate in Salmon, ID

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

Salmon has a cool climate with an average annual temperature of 44°F (7°C). Winters average 20°F in January while summers reach 69°F in July. The area gets 293 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 9.5 inches (drier than the 38-inch national average). The area receives 22.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 33. The city sits at an elevation of 3,945 feet.

Temperature

20°F Jan (-7°C) 69°F Jul (21°C)
Annual Average44.4°F
18% below US avg
January Average20°F (-7°C)
July Average69°F (21°C)
Sunny Days293 days/yr

Geography

Elevation3,945 ft (1,202 m)
Area2.4 sq mi (6.1 km²)
Population Density1,273/sq mi
Coordinates45.1744°N, 113.8948°W
TimezoneAmerica/Boise
CountyLemhi County County
Nearest AirportMissoula Montana (MSO)
121 miles away

Precipitation & Snow

Annual Rainfall 9.5"
75% below US avg
Snowfall 22.0"
Wettest Month (Jun) 1.65"
Driest Month (Feb) 0.55"

Air Quality

AQI Median33.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score41.4 / 100
Social Vulnerability51.4 / 100
Community Resilience5.0 / 100

Hazard Breakdown

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

Earthquake History

1,732 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.5.

Mar 31, 2020 Stanley, Idaho M6.5 125 km 12 km
Jul 26, 2005 16 km N of Dillon, Montana M5.6 102 km 13 km
Aug 20, 1999 22 km NW of Lima, Montana M5.1 97 km 16 km
Jan 3, 2015 9 km E of Challis, Idaho M5.0 76 km 9 km
Jun 7, 1994 18 km E of Challis, Idaho M4.8 76 km 5 km
Apr 13, 2014 15 km NNW of Challis, Idaho M4.8 71 km 4 km
Apr 1, 2020 21 km WNW of Stanley, Idaho M4.8 138 km 10 km
Apr 9, 2019 9 km NE of Lima, Montana M4.6 121 km 14 km
May 4, 1992 20 km E of Challis, Idaho M4.6 74 km 10 km
Jun 25, 2020 27 km NW of Stanley, Idaho M4.6 133 km 8 km
May 6, 1992 17 km E of Challis, Idaho M4.4 78 km 5 km
Dec 28, 1991 southern Idaho M4.4 71 km 5 km
May 14, 2020 31 km NW of Stanley, Idaho M4.4 134 km 13 km
Apr 1, 2020 23 km NW of Stanley, Idaho M4.4 137 km 7 km
May 8, 2007 8 km NNW of Alder, Montana M4.4 140 km 14 km
Apr 14, 2014 13 km NW of Challis, Idaho M4.4 73 km 7 km
May 21, 2020 26 km NW of Stanley, Idaho M4.4 132 km 6 km
Feb 17, 1992 33 km NNE of Stanley, Idaho M4.3 102 km 5 km
Mar 22, 1992 11 km NE of Challis, Idaho M4.3 68 km 5 km
Jan 28, 1995 33 km NNE of Stanley, Idaho M4.3 103 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
Jun 14, 1962 EF2 46 km 0.1 mi 0
May 19, 1962 EF2 95 km 2.0 mi 0
Jul 3, 1988 EF1 43 km 0.2 mi 0
Jun 15, 1987 EF1 1 km 0.1 mi 0
Aug 24, 1984 EF1 31 km 0.1 mi 0
Jun 6, 1976 EF1 46 km 3.0 mi 0
May 29, 1965 EF1 91 km 0.1 mi 0
Jun 1, 1956 EF1 3 km 0.5 mi 0
Aug 20, 2018 EF0 61 km 0.8 mi 0
Jul 10, 2016 EF0 98 km 0.0 mi 0
Apr 24, 2008 EF0 76 km 0.1 mi 0
Jul 19, 1997 EF0 82 km 0.1 mi 0
May 16, 1991 EF0 80 km 0.2 mi 0
Jul 14, 1962 EF0 46 km 0.1 mi 0
Aug 2, 1959 EF0 75 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

1 volcano within 200 km. Closest: Craters of the Moon (198 km).

Name Type Elevation Last Eruption Distance
Craters of the Moon Pyroclastic cone(s) 2,005 m (6,578 ft) -130 198 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: MUSTANG COMPLEX (377,632 acres, 2012).

Year Name Acres Burned Distance
2012 MUSTANG COMPLEX 377,632 58 km
2000 DIAMOND COMPLEX (DIAMOND PEAK) 271,361 79 km
2000 CLEAR CREEK DIVIDE COMPLEX (CLEAR CREEK) 170,322 35 km
2022 MOOSE 142,221 25 km
2000 VALLEY COMPLEX (BEAR) 118,045 94 km
2017 MEYERS 68,711 94 km
2000 MUSSIGBROD COMPLEX (MUSSIGBROD) 64,810 84 km
2000 SULA COMPLEX (MAYNARD) 62,967 70 km
2021 TRAIL CREEK 62,432 51 km
2007 SHOWER BATH COMPLEX (SHOWER BATH) 50,967 77 km
2007 SHOWER BATH COMPLEX (RED BLUFF) 50,106 83 km
2007 KRASSEL COMPLEX (TAG WFU) 49,358 81 km
1988 GOLDEN 48,138 68 km
1988 SLIVER CREEK 45,076 85 km
2013 GOLD PAN COMPLEX 43,216 80 km
1996 SWET-WARRIOR COMPLEX (SWET CREEK) 39,495 76 km
2021 ALDER CREEK 38,189 91 km
2006 MIDDLE FORK COMPLEX 33,860 98 km
2018 RABBIT FOOT 33,787 45 km
2023 HAYDEN 32,292 54 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 20°F (-7°C) 0.8 in Coldest
February 25°F (-4°C) 0.6 in Driest
March 33°F (1°C) 0.8 in
April 41°F (5°C) 0.9 in
May 49°F (9°C) 1.6 in
June 57°F (14°C) 1.7 in Wettest
July 69°F (21°C) 1.1 in Warmest
August 62°F (17°C) 1.0 in
September 53°F (12°C) 1.0 in
October 43°F (6°C) 0.8 in
November 30°F (-1°C) 0.8 in
December 21°F (-6°C) 0.8 in

Salmon has a seasonal temperature swing of 49°F / from 20°F in January to 69°F in July. Total annual precipitation is 11.6 inches, with June being the wettest month (1.7") and February the driest (0.6").

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