Weather & Climate in Twin Falls, ID

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

Twin Falls experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 31°F in January while summers reach 75°F in July. The area gets 310 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 9.2 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 23 / among the cleanest air in the country. 76% of days have good air quality. The city sits at an elevation of 3,730 feet.

Temperature

31°F Jan (-0°C) 75°F Jul (24°C)

Annual Average	51.6°F
	4% below US avg
January Average	31°F (-0°C)
July Average	75°F (24°C)
Sunny Days	310 days/yr

Geography

Elevation	3,730 ft (1,137 m)
Area	18.2 sq mi (47.0 km²)
Population Density	2,680/sq mi
Coordinates	42.5647°N, 114.4606°W
Timezone	America/Boise
County	Jerome County County
Nearest Airport	Joslin Field/Magic Valley Regional (TWF) 6 miles away

Precipitation & Snow

Annual Rainfall 9.2"

76% below US avg

Wettest Month (Jan) 1.22"

Driest Month (Jul) 0.28"

Air Quality

AQI Median	23.0
Rating	Good
Good Days %	76.1%
Unhealthy Days	7

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	21.5 / 100
Social Vulnerability	68.9 / 100
Community Resilience	3.1 / 100

Hazard Breakdown

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

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

Earthquake History

35 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.

Nov 4, 1992	67 km ENE of Montello, Nevada	M4.7	143 km	9 km
Jan 13, 1999	60 km NW of Wells, Nevada	M3.8	138 km	5 km
Nov 4, 2002	37 km NE of Mountain Home, Idaho	M3.5	122 km	5 km
Jul 23, 2000	64 km ESE of Owyhee, Nevada	M3.3	129 km	0 km
Feb 23, 2008	20 km NNE of Wells, Nevada	M3.3	147 km	8 km
Feb 29, 2008	19 km NE of Wells, Nevada	M3.3	149 km	0 km
Feb 26, 2008	19 km NE of Wells, Nevada	M3.2	150 km	0 km
Dec 17, 1992	30 km WSW of Mackay, Idaho	M3.1	144 km	5 km
Feb 26, 2008	20 km NNE of Wells, Nevada	M3.1	147 km	7 km
Feb 26, 2008	20 km NNE of Wells, Nevada	M3.1	147 km	9 km
Jul 24, 1998	14 km NW of Snowville, Utah	M3.1	145 km	8 km
Jul 22, 2010	47 km NE of Owyhee, Nevada	M3.0	109 km	0 km
Feb 26, 2008	24 km NE of Wells, Nevada	M3.0	146 km	0 km
Mar 8, 2008	26 km NE of Wells, Nevada	M2.9	144 km	13 km
Feb 29, 2008	20 km NNE of Wells, Nevada	M2.9	147 km	10 km
Mar 6, 2008	23 km NE of Wells, Nevada	M2.8	145 km	8 km
Feb 26, 2008	19 km NNE of Wells, Nevada	M2.8	148 km	12 km
Feb 6, 2002	31 km N of Glenns Ferry, Idaho	M2.8	98 km	5 km
Feb 23, 2008	20 km NNE of Wells, Nevada	M2.7	148 km	6 km
Feb 25, 2008	20 km NE of Wells, Nevada	M2.7	148 km	12 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 18, 1991	EF2	65 km	0.2 mi	0
Jun 9, 1990	EF2	19 km	0.2 mi	0
Sep 11, 1968	EF2	48 km	0.5 mi	0
Jun 10, 1990	EF1	37 km	0.2 mi	0
Apr 20, 1988	EF1	53 km	1.0 mi	0
Apr 20, 1988	EF1	15 km	1.0 mi	0
Jul 21, 1987	EF1	66 km	0.2 mi	0
Aug 10, 1986	EF1	81 km	2.0 mi	0
Jun 24, 1986	EF1	30 km	0.5 mi	0
Sep 8, 1985	EF1	8 km	0.2 mi	0
May 2, 1985	EF1	42 km	0.1 mi	0
Jun 7, 1972	EF1	65 km	0.5 mi	0
Jul 5, 1961	EF1	83 km	5.1 mi	0
Jun 5, 1957	EF1	15 km	0.1 mi	0
Jun 3, 1956	EF1	47 km	0.1 mi	0
Jul 25, 2024	EF0	81 km	0.6 mi	0
May 26, 2023	EF0	95 km	0.2 mi	0
Aug 2, 2019	EF0	75 km	1.0 mi	0
May 27, 2019	EF0	99 km	0.5 mi	0
May 7, 2019	EF0	13 km	1.5 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 (69 km).

Name	Type	Elevation	Last Eruption	Distance
Black Butte Crater Lava Field	Shield	1,478 m (4,849 ft)	-8400	69 km
Wapi Lava Field	Shield	1,604 m (5,262 ft)	-300	107 km
Craters of the Moon	Pyroclastic cone(s)	2,005 m (6,578 ft)	-130	123 km
Hell's Half Acre	Shield	1,631 m (5,351 ft)	-3250	194 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: MURPHY COMPLEX (567,409 acres, 2007).

Year	Name	Acres Burned	Distance
2007	MURPHY COMPLEX	567,409	84 km
2010	LONG BUTTE	302,546	54 km
2005	CLOVER	199,023	62 km
1996	RICHFIELDS	178,385	69 km
2012	KINYON ROAD	171,409	59 km
2007	WINECUP COMPLEX (WEST FORK)	159,805	92 km
1992	BLACK RIDGE	147,833	78 km
2012	FLAT TOP 2	102,340	68 km
2020	BADGER	86,836	43 km
2012	CAVE CANYON	84,780	41 km
1995	TUANA COMPLEX	80,638	81 km
1990	THORN CREEK	70,365	70 km
2019	POT HOLE	67,826	80 km
1987	BROWNS CRK	66,024	89 km
2007	HIGHWAY 93 COMPLEX (WEST BASIN)	63,143	74 km
1985	CROWS NEST	62,780	74 km
2006	SAILOR CAP	62,699	69 km
1986	BLUE BUTTE	62,445	69 km
2007	MURPHY COMPLEX (SCOTT CREEK)	59,642	77 km
2000	WEST BASIN	56,396	66 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	31°F (-0°C)	1.2 in	Wettest
February	33°F (1°C)	0.8 in
March	41°F (5°C)	1.1 in
April	48°F (9°C)	0.8 in
May	56°F (13°C)	1.1 in
June	65°F (18°C)	0.8 in
July	75°F (24°C)	0.3 in	Warmest, Driest
August	70°F (21°C)	0.3 in
September	60°F (16°C)	0.6 in
October	50°F (10°C)	0.7 in
November	37°F (3°C)	1.2 in
December	29°F (-2°C)	1.0 in	Coldest

Twin Falls has a seasonal temperature swing of 47°F / from 29°F in December to 75°F in July. Total annual precipitation is 9.9 inches, with January being the wettest month (1.2") and July the driest (0.3").

View full profile of Twin Falls, ID →