Weather & Climate in Osage, WY

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

Osage experiences four distinct seasons with an average annual temperature of 47°F (9°C). Winters average 24°F in January while summers reach 73°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 17.2 inches (drier than the 38-inch national average). The area receives 38.9 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 4,265 feet.

Temperature

24°F Jan (-4°C) 73°F Jul (23°C)

Annual Average	47.3°F
	12% below US avg
January Average	24°F (-4°C)
July Average	73°F (23°C)
Sunny Days	302 days/yr

Geography

Elevation	4,265 ft (1,300 m)
Area	1.9 sq mi (5.0 km²)
Population Density	47/sq mi
Coordinates	43.9848°N, 104.4346°W
Timezone	America/Denver
County	Weston County County
Nearest Airport	Northeast Wyoming Regional (GCC) 60 miles away

Precipitation & Snow

Annual Rainfall 17.2"

55% below US avg

Snowfall 38.9"

Wettest Month (May) 2.52"

Driest Month (Jan) 0.39"

Air Quality

AQI Median	34.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	7.9 / 100
Social Vulnerability	21.3 / 100
Community Resilience	3.3 / 100

Hazard Breakdown

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

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

Earthquake History

28 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

Sep 25, 2009	15 km E of Alzada, Montana	M4.2	117 km	5 km
Aug 29, 2004	16 km NNW of Douglas, Wyoming	M3.8	149 km	5 km
Feb 6, 1996	13 km WNW of Hill City, South Dakota	M3.7	57 km	5 km
Apr 9, 1996	34 km SW of Edgemont, South Dakota	M3.7	105 km	5 km
Mar 9, 2025	7 km W of Fairburn, South Dakota	M3.6	97 km	5 km
Dec 12, 2013	10 km WSW of Hermosa, South Dakota	M3.5	91 km	5 km
Feb 15, 2004	19 km N of Douglas, Wyoming	M3.5	140 km	10 km
Mar 26, 2021	10 km E of Edgemont, South Dakota	M3.4	96 km	5 km
May 10, 2013	25 km NW of Wright, Wyoming	M3.1	102 km	9 km
Feb 7, 2007	11 km WSW of Wasta, South Dakota	M3.1	148 km	5 km
May 3, 1996	32 km SSW of Edgemont, South Dakota	M3.1	110 km	5 km
Jun 30, 1993	25 km N of Douglas, Wyoming	M3.0	135 km	5 km
Nov 2, 1992	5 km ESE of Lusk, Wyoming	M3.0	139 km	5 km
Jun 29, 2024	22 km ESE of Hill View Heights, Wyoming	M3.0	50 km	10 km
Jan 16, 2012	25 km E of Buffalo Gap, South Dakota	M3.0	128 km	5 km
Sep 27, 2016	43 km WSW of Gillette, Wyoming	M3.0	128 km	14 km
Mar 10, 2011	22 km N of Van Tassell, Wyoming	M2.9	128 km	5 km
Jun 16, 2024	7 km NNE of Buffalo Gap, South Dakota	M2.9	106 km	8 km
Jan 5, 2004	28 km SSE of Hill View Heights, Wyoming	M2.8	56 km	5 km
Sep 4, 2023	50 km WSW of Antelope Valley-Crestview, Wyoming	M2.8	130 km	5 km

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

Tornado History

201 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 2 fatalities, 74 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 29, 1993	EF3	53 km	3.0 mi	0
May 11, 1991	EF3	100 km	2.0 mi	0
Jun 25, 1975	EF3	28 km	11.5 mi	0
Jul 18, 1965	EF3	98 km	0.1 mi	0
Jul 12, 1965	EF3	33 km	20.8 mi	0
Jun 23, 2023	EF2	92 km	3.8 mi	0
Jul 6, 2020	EF2	45 km	5.1 mi	0
Jul 6, 2020	EF2	44 km	2.1 mi	0
Jun 13, 2016	EF2	96 km	7.4 mi	0
Jun 13, 2014	EF2	82 km	16.5 mi	0
Jul 13, 2009	EF2	67 km	9.4 mi	0
Aug 12, 2005	EF2	88 km	1.5 mi	2
Jul 12, 1993	EF2	84 km	2.0 mi	0
May 11, 1991	EF2	99 km	1.0 mi	0
May 6, 1988	EF2	76 km	1.5 mi	0
May 10, 1985	EF2	21 km	1.0 mi	0
May 31, 1984	EF2	54 km	0.5 mi	0
Jun 25, 1975	EF2	92 km	16.3 mi	0
Jun 28, 1972	EF2	85 km	0.1 mi	0
Jul 23, 1969	EF2	70 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: JASPER (82,298 acres, 2000).

Year	Name	Acres Burned	Distance
2000	JASPER	82,298	48 km
2012	OIL CREEK	63,182	11 km
2017	LEGION LAKE	54,868	91 km
1999	CLARKELEN	21,432	93 km
1985	FLINT HILLS	21,062	94 km
2024	WILDCAT CREEK	18,751	72 km
2003	RED POINT	18,057	50 km
1988	GALENA	16,936	86 km
2006	THORN DIVIDE COMPLEX	15,261	64 km
2002	BATTLE CREEK	15,034	87 km
1990	SWEDLUND	14,673	81 km
2016	INDIAN CANYON	13,791	98 km
2001	ELK MOUNTAIN 2	13,758	40 km
2001	ROGERS SHACK	11,794	59 km
2002	GRIZZLY GULCH	11,487	71 km
2001	WEST HELL CANYON	11,097	92 km
2007	ALABAUGH	10,650	98 km
2011	THOMPSON	10,519	88 km
2012	WHITE DRAW	9,297	82 km
1988	ROCHELLE HILLS 2	8,718	69 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	24°F (-4°C)	0.4 in	Driest
February	26°F (-3°C)	0.5 in
March	35°F (2°C)	0.6 in
April	44°F (7°C)	1.5 in
May	55°F (13°C)	2.5 in	Wettest
June	65°F (18°C)	2.5 in
July	73°F (23°C)	1.9 in	Warmest
August	71°F (22°C)	1.6 in
September	60°F (15°C)	1.2 in
October	47°F (8°C)	1.1 in
November	32°F (0°C)	0.6 in
December	22°F (-6°C)	0.5 in	Coldest

Osage has a seasonal temperature swing of 52°F / from 22°F in December to 73°F in July. Total annual precipitation is 14.8 inches, with May being the wettest month (2.5") and January the driest (0.4").

View full profile of Osage, WY →