Weather & Climate in McKinnon, WY

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

McKinnon has a cool climate with an average annual temperature of 44°F (7°C). Winters average 21°F in January while summers reach 69°F in July. The area gets 322 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 7.8 inches (drier than the 38-inch national average). The area receives 29.7 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 34. The city sits at an elevation of 7,058 feet.

Temperature

21°F Jan (-6°C) 69°F Jul (20°C)

Annual Average	43.9°F
	19% below US avg
January Average	21°F (-6°C)
July Average	69°F (20°C)
Sunny Days	322 days/yr

Geography

Elevation	7,058 ft (2,151 m)
Area	5.9 sq mi (15.2 km²)
Population Density	9/sq mi
Coordinates	41.0314°N, 109.9383°W
Timezone	America/Denver
County	Daggett County County
Nearest Airport	Vernal Regional (VEL) 47 miles away

Precipitation & Snow

Annual Rainfall 7.8"

80% below US avg

Snowfall 29.7"

Wettest Month (May) 1.22"

Driest Month (Feb) 0.43"

Air Quality

AQI Median	34.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	3.7 / 100
Social Vulnerability	50.6 / 100
Community Resilience	96.2 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Relatively Low
Flood	Very Low
Hail	Very Low
Strong Wind	Very Low
Heat Wave	No Rating
Winter Weather	Relatively Low
Lightning	Relatively Moderate
Ice Storm	Very Low
Drought	Very Low
Cold Wave	Very Low
Landslide	Very Low
Avalanche	Relatively High

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

Earthquake History

150 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.

Apr 15, 2010	9 km NE of Randolph, Utah	M4.9	123 km	10 km
Mar 20, 1995	10 km NNW of Rangely, Colorado	M4.5	132 km	-3 km
Jan 30, 2000	8 km ESE of Little America, Wyoming	M4.3	55 km	5 km
May 20, 1995	434km E of Wendover, Utah	M4.1	124 km	4 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	85 km	16 km
Apr 7, 1990	28 km WNW of Bonanza, Utah	M4.0	111 km	11 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	140 km	14 km
Apr 22, 2017	4 km NW of Rangely, Colorado	M3.8	138 km	7 km
Nov 8, 1991	17 km WNW of Bonanza, Utah	M3.7	114 km	4 km
Mar 2, 1991	27 km SSW of Jensen, Utah	M3.7	106 km	-3 km
Aug 31, 2023	15 km ENE of Wolf Creek, Utah	M3.7	149 km	12 km
Jun 9, 2021	17 km E of Independence, Utah	M3.7	124 km	10 km
Nov 11, 2000	14 km SE of Jensen, Utah	M3.6	104 km	-3 km
Jul 28, 2002	10 km SSW of Laketown, Utah	M3.6	144 km	10 km
Jun 30, 1998	8 km NNW of Point of Rocks, Wyoming	M3.6	123 km	6 km
Jun 30, 1999	5 km SSW of Snyderville, Utah	M3.6	144 km	13 km
Jun 25, 1994	12 km NE of Little America, Wyoming	M3.6	66 km	-3 km
Jul 2, 2016	7 km NNE of Granger, Wyoming	M3.5	70 km	-3 km
Mar 7, 2009	9 km NNE of Granger, Wyoming	M3.5	71 km	1 km
Jul 12, 2003	Utah	M3.5	143 km	11 km

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

Tornado History

27 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 injury.

Date	Rating	Distance	Path	Fatalities
Aug 11, 1993	EF3	95 km	17.0 mi	0
May 10, 1950	EF2	44 km	2.0 mi	0
Jul 10, 2001	EF1	84 km	5.0 mi	0
Apr 20, 2001	EF1	62 km	0.2 mi	0
Apr 14, 2000	EF1	62 km	0.5 mi	0
Sep 3, 1999	EF1	78 km	4.0 mi	0
Jul 31, 1978	EF1	90 km	1.0 mi	0
Jun 27, 1974	EF1	67 km	0.1 mi	0
Sep 9, 1973	EF1	72 km	0.1 mi	0
Jun 1, 1955	EF1	70 km	0.1 mi	0
May 28, 2018	EF0	63 km	3.5 mi	0
Jun 16, 2015	EF0	57 km	1.0 mi	0
Sep 15, 2013	EF0	95 km	0.1 mi	0
Aug 6, 2009	EF0	96 km	2.2 mi	0
Aug 6, 2009	EF0	73 km	0.5 mi	0
Aug 21, 2001	EF0	33 km	2.0 mi	0
May 5, 1999	EF0	65 km	1.0 mi	0
Jun 10, 1997	EF0	65 km	0.1 mi	0
Jul 8, 1990	EF0	85 km	0.2 mi	0
Mar 23, 1990	EF0	77 km	0.2 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: EAST FORK (106,432 acres, 2020).

Year	Name	Acres Burned	Distance
2020	EAST FORK	106,432	74 km
2007	NEOLA NORTH	46,909	53 km
2000	WLD HORSE	41,881	54 km
2000	SHEEP MT	31,393	63 km
2002	MUSTANG	20,607	50 km
1988	WHITEROCKS	18,885	56 km
2002	GARDEN VALLEY COMPLEX (EAST FORK)	14,245	69 km
2017	PEEKABOO	11,985	99 km
2018	LANEY RIM	11,589	83 km
2000	BUSTERFLAT	8,501	92 km
2020	RICHARD MTN	7,802	57 km
2010	WINDMILL	5,935	77 km
1989	UINTA CANYON	5,834	45 km
1988	ZENOBIA	5,468	99 km
1997	RED CREEK	5,381	75 km
1988	LITTLEBRYN	5,300	79 km
2005	NORTH NEOLA	5,195	61 km
2018	MURDOCK	5,169	87 km
1985	WEYMAN	5,058	20 km
1996	L.D.FALLS	4,697	98 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	21°F (-6°C)	0.5 in	Coldest
February	23°F (-5°C)	0.4 in	Driest
March	31°F (-1°C)	0.7 in
April	38°F (3°C)	1.0 in
May	47°F (8°C)	1.2 in	Wettest
June	57°F (14°C)	1.1 in
July	69°F (20°C)	0.9 in	Warmest
August	63°F (17°C)	1.0 in
September	54°F (12°C)	0.9 in
October	43°F (6°C)	0.9 in
November	30°F (-1°C)	0.6 in
December	22°F (-6°C)	0.6 in

McKinnon has a seasonal temperature swing of 48°F / from 21°F in January to 69°F in July. Total annual precipitation is 9.9 inches, with May being the wettest month (1.2") and February the driest (0.4").

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