Weather & Climate in Jansen, CO

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

Jansen experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 31°F in January while summers reach 71°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 17.2 inches (drier than the 38-inch national average). The area receives 48.1 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 6,241 feet.

Temperature

31°F Jan (-0°C) 71°F Jul (21°C)

Annual Average	49.8°F
	8% below US avg
January Average	31°F (-0°C)
July Average	71°F (21°C)
Sunny Days	330 days/yr

Geography

Elevation	6,241 ft (1,902 m)
Area	1.2 sq mi (3.0 km²)
Population Density	80/sq mi
Coordinates	37.1582°N, 104.5501°W
Timezone	America/Denver
County	Las Animas County County
Nearest Airport	San Luis Valley Regional/Bergman Field (ALS) 75 miles away

Precipitation & Snow

Annual Rainfall 17.2"

55% below US avg

Snowfall 48.1"

Wettest Month (Jul) 2.80"

Driest Month (Dec) 0.39"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	23.6 / 100
Social Vulnerability	58.0 / 100
Community Resilience	11.4 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Relatively Moderate
Flood	Relatively Low
Hail	Relatively 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	Relatively Low
Landslide	Relatively Low
Volcano	No Rating
Avalanche	Relatively Low

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

Earthquake History

337 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.

Aug 23, 2011	6 km S of Valdez, Colorado	M5.3	17 km	4 km
Aug 10, 2005	20 km S of Weston, Colorado	M5.0	34 km	5 km
Aug 22, 2011	9 km SSW of Starkville, Colorado	M4.7	14 km	5 km
Sep 5, 2001	0 km SE of Cokedale, Colorado	M4.5	6 km	5 km
Mar 22, 2004	30 km S of Weston, Colorado	M4.4	43 km	5 km
Jan 3, 2007	8 km SSW of Weston, Colorado	M4.4	32 km	5 km
Mar 10, 2023	6 km NNE of Segundo, Colorado	M4.3	16 km	6 km
Aug 1, 2004	31 km S of Stonewall Gap, Colorado	M4.3	59 km	5 km
Jun 19, 2023	Colorado	M4.1	18 km	6 km
Aug 10, 2005	20 km SSW of Segundo, Colorado	M4.1	33 km	5 km
Jul 29, 2009	32 km NNE of Cimarron, New Mexico	M4.1	47 km	5 km
Feb 6, 2016	Colorado	M4.0	37 km	2 km
Aug 23, 2011	7 km S of Valdez, Colorado	M4.0	17 km	5 km
Aug 26, 2023	19 km SSW of Weston, Colorado	M4.0	40 km	4 km
Sep 13, 2011	20 km S of Sequndo, Colorado	M4.0	30 km	5 km
Sep 4, 2001	2 km W of Cokedale, Colorado	M4.0	9 km	5 km
Mar 10, 2023	5 km N of Sequndo, Colorado	M3.9	16 km	4 km
Sep 16, 2011	26 km S of Sequndo, Colorado	M3.9	35 km	5 km
Aug 20, 2015	7 km WSW of Weston, Colorado	M3.9	34 km	1 km
Aug 23, 2016	18 km SSW of Weston, CO	M3.9	40 km	4 km

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

Tornado History

70 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 fatality, 51 injuries.

Date	Rating	Distance	Path	Fatalities
May 29, 1964	EF3	70 km	3.0 mi	1
Jul 31, 1955	EF3	84 km	0.5 mi	0
Jul 25, 1996	EF2	80 km	2.0 mi	0
Jul 10, 1978	EF2	58 km	0.3 mi	0
May 8, 2017	EF1	94 km	0.2 mi	0
Jun 6, 2014	EF1	12 km	8.6 mi	0
Jun 6, 2014	EF1	33 km	1.4 mi	0
Jun 7, 1998	EF1	93 km	3.0 mi	0
May 25, 1993	EF1	56 km	1.0 mi	0
Aug 17, 1992	EF1	77 km	0.5 mi	0
Jun 10, 1983	EF1	31 km	0.5 mi	0
Jun 10, 1983	EF1	9 km	0.5 mi	0
Jun 19, 1980	EF1	86 km	6.4 mi	0
Jun 19, 1980	EF1	83 km	2.0 mi	0
May 5, 1980	EF1	99 km	2.0 mi	0
May 15, 1979	EF1	86 km	0.1 mi	0
Jun 1, 1977	EF1	85 km	2.0 mi	0
Jun 16, 1965	EF1	10 km	0.1 mi	0
Jun 5, 1961	EF1	98 km	5.7 mi	0
Jun 17, 2023	EF0	63 km	2.0 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SPRING CREEK (107,108 acres, 2018).

Year	Name	Acres Burned	Distance
2018	SPRING CREEK	107,108	68 km
2002	PONIL COMPLEX	89,084	69 km
2008	BRIDGER	46,612	83 km
2011	BEAR SPRINGS CALLIE MARIE	36,863	74 km
2018	UTE PARK	30,177	82 km
2011	TRACK	28,893	24 km
2006	CASA	27,452	89 km
2002	SPRING	24,044	42 km
2006	MATO VEGA	13,126	82 km
1996	CANYON	10,233	99 km
2013	EAST PEAK	10,082	42 km
2011	CALLIE MARIE	9,393	92 km
1988	UNNAMED	8,454	98 km
2002	JAMES AND JOHN	7,190	17 km
2011	BEAR	6,585	31 km
2011	PURGATOIRE FIRE	6,233	47 km
2021	HART CANYON RX FY22	5,781	62 km
2018	LOOP ROAD RX	5,688	71 km
2008	WEST FORK	5,436	42 km
2018	TRINCHERA CREEK	5,173	58 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	31°F (-0°C)	0.4 in
February	32°F (0°C)	0.4 in
March	38°F (3°C)	0.7 in
April	45°F (7°C)	0.9 in
May	54°F (12°C)	1.9 in
June	62°F (17°C)	1.6 in
July	71°F (21°C)	2.8 in	Warmest, Wettest
August	65°F (18°C)	2.8 in
September	59°F (15°C)	1.3 in
October	50°F (10°C)	0.9 in
November	38°F (4°C)	0.7 in
December	31°F (-0°C)	0.4 in	Coldest, Driest

Jansen has a seasonal temperature swing of 40°F / from 31°F in December to 71°F in July. Total annual precipitation is 14.7 inches, with July being the wettest month (2.8") and December the driest (0.4").

View full profile of Jansen, CO →