Weather & Climate in Richfield, ID

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

Richfield experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 23°F in January while summers reach 71°F in July. The area gets 302 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 10.5 inches (drier than the 38-inch national average). The area receives 28.6 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 4,303 feet.

Temperature

23°F Jan (-5°C) 71°F Jul (22°C)

Annual Average	46.1°F
	15% below US avg
January Average	23°F (-5°C)
July Average	71°F (22°C)
Sunny Days	302 days/yr

Geography

Elevation	4,303 ft (1,312 m)
Area	0.7 sq mi (1.7 km²)
Population Density	845/sq mi
Coordinates	43.0516°N, 114.1559°W
Timezone	America/Boise
County	Camas County County
Nearest Airport	Joslin Field/Magic Valley Regional (TWF) 43 miles away

Precipitation & Snow

Annual Rainfall 10.5"

72% below US avg

Snowfall 28.6"

Wettest Month (Dec) 1.65"

Driest Month (Jul) 0.35"

Air Quality

AQI Median	33.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	6.0 / 100
Social Vulnerability	46.3 / 100
Community Resilience	37.0 / 100

Hazard Breakdown

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

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

Earthquake History

189 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.

Jun 8, 2025	24 km E of Clayton, Idaho	M4.3	135 km	7 km
Jul 10, 2020	18 km SW of Stanley, Idaho	M4.1	138 km	10 km
Jun 23, 1992	10 km NE of Clayton, Idaho	M4.0	143 km	10 km
Jul 10, 2020	14 km SW of Stanley, Idaho	M3.9	140 km	14 km
May 31, 2020	16 km SW of Stanley, Idaho	M3.9	142 km	10 km
Jan 1, 2021	15 km SSW of Stanley, Idaho	M3.9	132 km	3 km
Jun 27, 2020	17 km SW of Stanley, Idaho	M3.8	141 km	10 km
Nov 7, 1990	16 km SSE of Challis, Idaho	M3.8	147 km	5 km
Sep 30, 1990	13 km S of Challis, Idaho	M3.7	149 km	5 km
May 8, 2020	12 km WSW of Stanley, Idaho	M3.7	148 km	10 km
Apr 8, 2020	15 km SW of Stanley, Idaho	M3.7	142 km	10 km
Feb 8, 2015	22 km SE of Challis, Idaho	M3.7	145 km	14 km
Jan 26, 2015	22 km SE of Challis, Idaho	M3.6	145 km	13 km
Jul 1, 2020	15 km SW of Stanley, Idaho	M3.6	141 km	10 km
Apr 25, 2021	1 km WSW of Stanley, Idaho	M3.5	144 km	3 km
Oct 8, 1990	9 km NNE of Clayton, Idaho	M3.5	145 km	5 km
Nov 4, 2002	37 km NE of Mountain Home, Idaho	M3.5	110 km	5 km
Jun 22, 2020	11 km SW of Stanley, Idaho	M3.5	142 km	10 km
Oct 7, 1992	15 km SSE of Challis, Idaho	M3.5	148 km	5 km
Jan 10, 1996	10 km S of Clayton, Idaho	M3.5	126 km	5 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 18, 1991	EF2	62 km	0.2 mi	0
Jun 9, 1990	EF2	45 km	0.2 mi	0
Sep 11, 1968	EF2	44 km	0.5 mi	0
May 21, 1992	EF1	96 km	0.2 mi	0
Jun 10, 1990	EF1	63 km	0.2 mi	0
Apr 20, 1988	EF1	47 km	1.0 mi	0
Apr 20, 1988	EF1	51 km	1.0 mi	0
Jul 21, 1987	EF1	8 km	0.2 mi	0
Jul 18, 1987	EF1	69 km	1.0 mi	0
Aug 24, 1986	EF1	97 km	0.5 mi	0
Aug 10, 1986	EF1	92 km	2.0 mi	0
Jun 24, 1986	EF1	74 km	0.5 mi	0
Sep 8, 1985	EF1	53 km	0.2 mi	0
May 2, 1985	EF1	37 km	0.1 mi	0
Jun 7, 1972	EF1	52 km	0.5 mi	0
Jul 5, 1961	EF1	71 km	5.1 mi	0
Jun 2, 1961	EF1	97 km	0.1 mi	0
Jun 5, 1957	EF1	63 km	0.1 mi	0
Jun 3, 1956	EF1	55 km	0.1 mi	0
Jul 25, 2024	EF0	94 km	0.6 mi	0

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

Nearby Volcanoes

4 volcanoes within 200 km. Closest: Black Butte Crater Lava Field (22 km).

Name	Type	Elevation	Last Eruption	Distance
Black Butte Crater Lava Field	Shield	1,478 m (4,849 ft)	-8400	22 km
Craters of the Moon	Pyroclastic cone(s)	2,005 m (6,578 ft)	-130	67 km
Wapi Lava Field	Shield	1,604 m (5,262 ft)	-300	79 km
Hell's Half Acre	Shield	1,631 m (5,351 ft)	-3250	147 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: LONG BUTTE (302,546 acres, 2010).

Year	Name	Acres Burned	Distance
2010	LONG BUTTE	302,546	81 km
1996	COXS WELL	219,424	87 km
2006	CRYSTAL	218,581	81 km
2005	CLOVER	199,023	98 km
1996	RICHFIELDS	178,385	18 km
2012	KINYON ROAD	171,409	97 km
1992	BLACK RIDGE	147,833	28 km
1999	MULE BUTTE	138,102	72 km
2013	BEAVER CREEK	111,286	68 km
2012	FLAT TOP 2	102,340	22 km
2020	BADGER	86,836	90 km
2012	CAVE CANYON	84,780	84 km
1990	THORN CREEK	70,365	33 km
2018	SHARPS	63,895	54 km
2000	FLATTOP	56,792	87 km
2017	MAMMOTH CAVE	50,391	12 km
2007	CASTLE ROCK	48,430	73 km
2005	RUPERT	45,361	54 km
2007	RED BRIDGE	44,096	28 km
2016	LAIDLAW	40,551	44 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	23°F (-5°C)	1.6 in	Coldest
February	27°F (-3°C)	1.2 in
March	36°F (2°C)	1.0 in
April	45°F (7°C)	0.7 in
May	54°F (12°C)	1.0 in
June	63°F (17°C)	0.9 in
July	71°F (22°C)	0.4 in	Warmest, Driest
August	70°F (21°C)	0.5 in
September	60°F (16°C)	0.6 in
October	48°F (9°C)	0.6 in
November	34°F (1°C)	1.5 in
December	24°F (-5°C)	1.7 in	Wettest

Richfield has a seasonal temperature swing of 48°F / from 23°F in January to 71°F in July. Total annual precipitation is 11.7 inches, with December being the wettest month (1.7") and July the driest (0.4").

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