Weather & Climate in Idaho City, ID

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

Idaho City has a cool climate with an average annual temperature of 44°F (7°C). Winters average 24°F in January while summers reach 66°F in July. The area gets 291 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 21.1 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 42. 65% of days have good air quality. The city sits at an elevation of 3,984 feet.

Temperature

24°F Jan (-4°C) 66°F Jul (19°C)

Annual Average	43.9°F
	19% below US avg
January Average	24°F (-4°C)
July Average	66°F (19°C)
Sunny Days	291 days/yr

Geography

Elevation	3,984 ft (1,214 m)
Area	0.7 sq mi (1.7 km²)
Population Density	830/sq mi
Coordinates	43.8278°N, 115.8305°W
Timezone	America/Boise
County	Boise County County
Nearest Airport	Boise Air Trml/Gowen Field (BOI) 27 miles away

Precipitation & Snow

Annual Rainfall 21.1"

44% below US avg

Wettest Month (Jan) 3.35"

Driest Month (Jul) 0.63"

Air Quality

AQI Median	42.0
Rating	Good
Good Days %	64.8%
Unhealthy Days	8

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	48.9 / 100
Social Vulnerability	33.3 / 100
Community Resilience	13.2 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Relatively Moderate
Flood	Relatively Low
Hail	Very Low
Strong Wind	Relatively Low
Heat Wave	Very Low
Winter Weather	Relatively Low
Lightning	Very Low
Ice Storm	Very Low
Drought	Very Low
Cold Wave	Very Low
Landslide	Relatively Moderate
Volcano	Very Low
Avalanche	Relatively High

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

1,480 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.5.

Mar 31, 2020	Stanley, Idaho	M6.5	91 km	12 km
Feb 26, 2024	10 km N of Smiths Ferry, Idaho	M4.9	67 km	12 km
Apr 1, 2020	21 km WNW of Stanley, Idaho	M4.8	76 km	10 km
Apr 13, 2014	15 km NNW of Challis, Idaho	M4.8	149 km	4 km
Jun 25, 2020	27 km NW of Stanley, Idaho	M4.6	82 km	8 km
May 14, 2020	31 km NW of Stanley, Idaho	M4.4	82 km	13 km
Apr 1, 2020	23 km NW of Stanley, Idaho	M4.4	78 km	7 km
May 21, 2020	26 km NW of Stanley, Idaho	M4.4	83 km	6 km
Apr 14, 2014	13 km NW of Challis, Idaho	M4.4	147 km	7 km
Jan 28, 1995	33 km NNE of Stanley, Idaho	M4.3	112 km	5 km
Jun 8, 2025	24 km E of Clayton, Idaho	M4.3	147 km	7 km
Feb 17, 1992	33 km NNE of Stanley, Idaho	M4.3	113 km	5 km
Jan 27, 2025	26 km NW of Clayton, Idaho	M4.2	113 km	9 km
Jun 9, 2020	11 km NW of Stanley, Idaho	M4.2	82 km	10 km
Apr 11, 1995	20 km SSE of Yellow Pine, Idaho	M4.2	111 km	5 km
Jun 14, 2020	10 km NW of Stanley, Idaho	M4.2	80 km	8 km
Apr 21, 2020	29 km NW of Stanley, Idaho	M4.1	83 km	10 km
Feb 18, 1993	34 km NNE of Stanley, Idaho	M4.1	111 km	5 km
Apr 11, 2020	20 km NW of Stanley, Idaho	M4.1	78 km	10 km
Jul 10, 2020	18 km SW of Stanley, Idaho	M4.1	67 km	10 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

35 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1. Total: 1 injury.

Date	Rating	Distance	Path	Fatalities
May 17, 1996	EF1	100 km	0.3 mi	0
Jun 19, 1991	EF1	54 km	0.1 mi	0
Oct 26, 1984	EF1	52 km	0.3 mi	0
Mar 21, 1984	EF1	58 km	0.1 mi	0
Jul 1, 1983	EF1	84 km	2.0 mi	0
Jul 5, 1961	EF1	97 km	5.1 mi	0
Jun 2, 1961	EF1	73 km	0.1 mi	0
Jun 27, 1958	EF1	91 km	5.0 mi	0
Jul 9, 1956	EF1	56 km	0.1 mi	0
May 26, 2023	EF0	53 km	1.0 mi	0
May 27, 2022	EF0	88 km	3.8 mi	0
May 27, 2019	EF0	86 km	0.5 mi	0
May 26, 2013	EF0	72 km	3.9 mi	0
Aug 25, 2004	EF0	68 km	—	0
Aug 25, 2004	EF0	69 km	—	0
Apr 6, 2003	EF0	66 km	1.0 mi	0
Sep 29, 2002	EF0	62 km	1.0 mi	0
Feb 7, 2002	EF0	54 km	0.1 mi	0
Dec 15, 2000	EF0	66 km	1.0 mi	0
Aug 3, 2000	EF0	46 km	—	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

3 volcanoes within 200 km. Closest: Black Butte Crater Lava Field (139 km).

Name	Type	Elevation	Last Eruption	Distance
Black Butte Crater Lava Field	Shield	1,478 m (4,849 ft)	-8400	139 km
Jordan Craters	Volcanic field	1,473 m (4,833 ft)	-1250	152 km
Craters of the Moon	Pyroclastic cone(s)	2,005 m (6,578 ft)	-130	193 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: FOOTHILLS (228,631 acres, 1992).

Year	Name	Acres Burned	Distance
1992	FOOTHILLS	228,631	36 km
2012	HALSTEAD	190,156	97 km
2016	PIONEER	189,596	40 km
2024	PADDOCK	186,842	64 km
1994	IDAHO CITY COMPLEX (RABBIT CREEK)	150,456	35 km
2013	PONY COMPLEX	148,188	51 km
2012	TRINITY RIDGE	141,807	37 km
2013	ELK COMPLEX	129,565	48 km
2021	BOUNDARY	97,995	100 km
1987	DEADWOOD	57,051	80 km
2006	CHERRY	56,773	53 km
2006	RATTLESNAKE COMPLEX	48,330	51 km
1989	SMOKEY CREEK	47,682	38 km
1986	BISSELL CK	40,847	66 km
2005	VALLEY ROAD	40,801	93 km
2022	ROSS FORK	40,690	77 km
1986	VAN DUSEN	39,901	54 km
2008	SOUTH BARKER WFU	36,091	59 km
2000	TRAIL CREEK	33,548	57 km
2006	RED MOUNTAIN	33,403	64 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	24°F (-4°C)	3.4 in	Coldest, Wettest
February	27°F (-3°C)	2.4 in
March	32°F (-0°C)	2.1 in
April	39°F (4°C)	1.7 in
May	47°F (8°C)	1.5 in
June	54°F (12°C)	1.5 in
July	66°F (19°C)	0.6 in	Warmest, Driest
August	63°F (17°C)	0.8 in
September	55°F (13°C)	1.1 in
October	45°F (7°C)	1.4 in
November	33°F (0°C)	2.9 in
December	25°F (-4°C)	3.3 in

Idaho City has a seasonal temperature swing of 42°F / from 24°F in January to 66°F in July. Total annual precipitation is 22.5 inches, with January being the wettest month (3.4") and July the driest (0.6").

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