Weather & Climate in Lyman, UT

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

Lyman has a cool climate with an average annual temperature of 45°F (7°C). Winters average 25°F in January while summers reach 67°F in July. The area gets 330 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 8.4 inches (drier than the 38-inch national average). The area receives 19.2 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 7,184 feet.

Temperature

25°F Jan (-4°C) 67°F Jul (19°C)

Annual Average	44.5°F
	18% below US avg
January Average	25°F (-4°C)
July Average	67°F (19°C)
Sunny Days	330 days/yr

Geography

Elevation	7,184 ft (2,190 m)
Area	1.8 sq mi (4.7 km²)
Population Density	130/sq mi
Coordinates	38.3966°N, 111.5893°W
Timezone	America/Denver
County	Sevier County County
Nearest Airport	Cedar City Regional (CDC) 95 miles away

Precipitation & Snow

Annual Rainfall 8.4"

78% below US avg

Snowfall 19.2"

Wettest Month (Aug) 1.65"

Driest Month (Apr) 0.71"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	22.7 / 100
Social Vulnerability	13.8 / 100
Community Resilience	56.1 / 100

Hazard Breakdown

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

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

Earthquake History

834 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.

Apr 20, 1991	19 km SE of Minersville, Utah	M4.6	111 km	10 km
Jan 3, 2011	10 km NW of Circleville, Utah	M4.6	68 km	11 km
Jan 2, 1998	10 km ESE of Beaver, Utah	M4.4	84 km	12 km
Jun 24, 1992	30 km WSW of Emery, Utah	M4.3	44 km	5 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	126 km	1 km
Apr 12, 2012	16 km NNE of Bryce Canyon City, Utah	M4.2	79 km	15 km
Jul 19, 2001	31 km NNE of Fremont, Utah	M4.2	38 km	7 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	117 km	9 km
Oct 22, 1999	20 km SE of Minersville, Utah	M4.1	106 km	6 km
Jul 4, 2015	Utah	M4.1	98 km	3 km
Apr 14, 2019	28 km W of Kanosh, Utah	M4.1	110 km	1 km
Feb 20, 2019	8 km SW of Kanosh, Utah	M4.0	88 km	8 km
Sep 6, 1994	12 km SSW of Circleville, Utah	M4.0	73 km	6 km
Jan 26, 1991	22 km SE of Escalante, Utah	M4.0	86 km	22 km
Feb 23, 2001	12 km SW of Kanosh, Utah	M4.0	90 km	2 km
Jan 30, 1998	19 km NNW of Panguitch, Utah	M4.0	93 km	7 km
Jan 6, 1996	15 km SE of Castle Dale, Utah	M3.9	103 km	6 km
Jun 18, 1998	18 km NNW of Panguitch, Utah	M3.9	93 km	6 km
Jan 17, 2020	10 km NNE of Minersville, Utah	M3.9	112 km	12 km
Apr 14, 2010	30 km ENE of Boulder Town, Utah	M3.9	60 km	13 km

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

Tornado History

23 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 injury.

Date	Rating	Distance	Path	Fatalities
Sep 8, 2002	EF2	97 km	2.7 mi	0
Nov 2, 1967	EF2	65 km	0.1 mi	0
Jun 16, 1955	EF2	95 km	2.7 mi	0
Sep 22, 2016	EF1	97 km	0.8 mi	0
Apr 4, 1993	EF1	50 km	0.1 mi	0
Mar 31, 1978	EF1	74 km	0.5 mi	0
Apr 19, 1970	EF1	54 km	1.5 mi	0
Aug 28, 1964	EF1	86 km	0.1 mi	0
Aug 7, 1957	EF1	66 km	1.5 mi	0
Aug 26, 2016	EF0	98 km	0.3 mi	0
Sep 12, 2002	EF0	76 km	0.2 mi	0
Sep 8, 2002	EF0	84 km	0.2 mi	0
Sep 8, 2000	EF0	98 km	2.0 mi	0
Sep 7, 1991	EF0	83 km	0.1 mi	0
Aug 19, 1984	EF0	29 km	0.1 mi	0
Aug 15, 1984	EF0	87 km	0.1 mi	0
Jul 24, 1981	EF0	78 km	0.2 mi	0
May 31, 1969	EF0	61 km	0.1 mi	0
May 31, 1969	EF0	61 km	0.1 mi	0
May 31, 1969	EF0	61 km	0.1 mi	0

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

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Black Rock Desert (102 km).

Name	Type	Elevation	Last Eruption	Distance
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	102 km
Markagunt Plateau	Volcanic field	2,840 m (9,318 ft)	1050	131 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SANFORD (81,854 acres, 2002).

Year	Name	Acres Burned	Distance
2002	SANFORD	81,854	72 km
1996	SORENSON COMPLEX (SOUTH TWIN PEAKS)	46,576	92 km
2010	TWITCHELL CANYON	42,956	77 km
2003	BULLDOG	31,578	91 km
2006	DOG VALLEY	28,992	91 km
1996	ADELAIDE COMPLEX (ADALAIDE)	15,638	75 km
1996	CUNNINGHAM	14,866	94 km
2022	HALFWAY HILL	12,145	81 km
2019	FALL RX 2019 LANGDON/BIG TABLE/COLLINS/SMITH CYN	7,851	40 km
2000	SWAINS	7,450	92 km
2018	SOUTH MONROE RX	7,442	40 km
2023	THOMPSON RIDGE	6,815	77 km
2016	BRIGGS	6,805	77 km
2009	SAWMILL CANYON	6,253	98 km
1996	POLE CREEK	5,813	70 km
2022	OLD WOMAN SOUTH RX	5,686	52 km
2016	LOWER EBBS	5,338	99 km
2007	JUNGLE	4,922	85 km
2018	WILLOW PATCH	4,592	42 km
2003	LONESOME BEAVER	4,551	77 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	25°F (-4°C)	0.8 in	Coldest
February	28°F (-2°C)	0.8 in
March	34°F (1°C)	0.8 in
April	40°F (5°C)	0.7 in	Driest
May	48°F (9°C)	0.9 in
June	58°F (14°C)	0.8 in
July	67°F (19°C)	1.4 in	Warmest
August	63°F (17°C)	1.7 in	Wettest
September	56°F (13°C)	1.4 in
October	45°F (7°C)	1.0 in
November	33°F (1°C)	0.8 in
December	26°F (-3°C)	0.9 in

Lyman has a seasonal temperature swing of 42°F / from 25°F in January to 67°F in July. Total annual precipitation is 11.9 inches, with August being the wettest month (1.7") and April the driest (0.7").

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