Weather & Climate in Hillsdale, WY

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

Hillsdale experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 27°F in January while summers reach 71°F in July. The area gets 316 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 15.3 inches (drier than the 38-inch national average). The area receives 34.5 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 5,679 feet.

Temperature

27°F Jan (-3°C) 71°F Jul (22°C)

Annual Average	46.9°F
	13% below US avg
January Average	27°F (-3°C)
July Average	71°F (22°C)
Sunny Days	316 days/yr

Geography

Elevation	5,679 ft (1,731 m)
Area	0.8 sq mi (2.2 km²)
Population Density	58/sq mi
Coordinates	41.2080°N, 104.4744°W
Timezone	America/Denver
County	Laramie County County
Nearest Airport	Cheyenne Regional/Jerry Olson Field (CYS) 18 miles away

Precipitation & Snow

Annual Rainfall 15.3"

60% below US avg

Snowfall 34.5"

Wettest Month (May) 2.60"

Driest Month (Feb) 0.35"

Air Quality

AQI Median	34.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	76.7 / 100
Social Vulnerability	22.0 / 100
Community Resilience	49.0 / 100

Hazard Breakdown

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

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

Earthquake History

7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.2.

Jun 1, 2014	9 km NNW of Kersey, Colorado	M3.2	83 km	1 km
Jan 6, 2018	7 km SW of Guernsey, Wyoming	M3.0	116 km	5 km
Mar 30, 2019	7 km NE of Greeley, Colorado	M2.9	84 km	6 km
Dec 19, 2013	33 km NE of Rock River, Wyoming	M2.8	128 km	12 km
Jun 13, 2025	7 km SE of Erie, Colorado	M2.7	140 km	9 km
Aug 23, 2016	2 km SSE of Eaton, Colorado	M2.6	80 km	10 km
Jun 23, 2014	6 km NNE of Kersey, Colorado	M2.5	85 km	5 km

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

Tornado History

542 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 3 fatalities, 83 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 27, 1955	EF4	98 km	26.0 mi	2
May 27, 1985	EF3	91 km	48.0 mi	0
Jul 16, 1979	EF3	29 km	8.8 mi	1
Jun 20, 1960	EF3	93 km	26.1 mi	0
Apr 23, 1960	EF3	66 km	17.2 mi	0
Jun 27, 1955	EF3	87 km	2.0 mi	0
Jun 26, 1955	EF3	86 km	2.0 mi	0
May 15, 1952	EF3	98 km	7.4 mi	0
Jun 23, 2023	EF2	66 km	4.7 mi	0
Jun 23, 2023	EF2	98 km	2.5 mi	0
Jun 6, 2018	EF2	97 km	0.6 mi	0
May 27, 2018	EF2	54 km	1.0 mi	0
Jun 12, 2017	EF2	36 km	15.0 mi	0
May 18, 2010	EF2	9 km	1.5 mi	0
Jun 5, 2009	EF2	48 km	8.3 mi	0
May 22, 2008	EF2	71 km	25.1 mi	0
Jun 27, 2005	EF2	91 km	17.0 mi	0
May 21, 1998	EF2	91 km	4.0 mi	0
Jul 31, 1996	EF2	84 km	5.0 mi	0
Jun 9, 1990	EF2	68 km	23.0 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: HIGH PARK (90,769 acres, 2012).

Year	Name	Acres Burned	Distance
2012	HIGH PARK	90,769	96 km
2022	CARTER CANYON	15,828	83 km
2000	CO LINE	10,961	53 km
2004	PICNIC ROCK	9,014	84 km
2006	TRAILER	8,040	88 km
2024	HAPPY JACK	6,585	44 km
2021	HACKBERRY CA	6,367	99 km
2002	UNNAMED	5,258	75 km
2022	SMOKEY	3,961	96 km
2021	313	3,859	57 km
2020	HUBBARDS GAP	3,435	98 km
2005	BROADCAST BURN	3,230	82 km
2004	ROSETTA LANE	3,164	28 km
2005	LITTLEBEAR	3,125	48 km
2021	BUFFALO CREEK	2,716	92 km
2011	CHRISTNICK	2,714	98 km
2021	VISTA TREND CA	2,669	86 km
2015	2 CA MA IRON MOUNTAIN MIDDLE CANYON PRESCRIBED BURN	2,517	80 km
2002	UNNAMED	2,261	77 km
2021	CROSS CA	2,247	76 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	27°F (-3°C)	0.4 in	Coldest
February	30°F (-1°C)	0.4 in	Driest
March	36°F (2°C)	1.0 in
April	43°F (6°C)	1.4 in
May	53°F (12°C)	2.6 in	Wettest
June	63°F (17°C)	2.3 in
July	71°F (22°C)	2.2 in	Warmest
August	68°F (20°C)	1.5 in
September	59°F (15°C)	1.3 in
October	47°F (9°C)	0.8 in
November	35°F (1°C)	0.6 in
December	28°F (-2°C)	0.4 in

Hillsdale has a seasonal temperature swing of 44°F / from 27°F in January to 71°F in July. Total annual precipitation is 14.8 inches, with May being the wettest month (2.6") and February the driest (0.4").

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