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East Thermopolis, WY

Full City Profile · Wyoming · Hot Springs County County

2.5 /5.0
C+ Fair
186 Population 1,033/sq mi density
$20,865 Median Income $22,881 per capita
$118,800 Home Value $203,683 Zillow
$438 Median Rent 27.3% income on rent
49°F Avg Temperature 302 sunny days/yr
33 Violent Crime/100K 722 property/100K
C+
Overall
2.5 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$20,865 median income, 0.6% unemployment
B
Affordability
3.5 / 5.0
$118,800 home value, $438/mo rent
F
Safety
1.0 / 5.0
33 violent crimes/100K
C
Education
2.2 / 5.0
15.0% bachelor's degree or higher
East Thermopolis experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 24°F in January while summers reach 75°F in July. The area gets 302 sunny days per year. Annual precipitation totals 12.0 inches. The area receives 27.4 inches of snow annually. Air quality is rated Good with a median AQI of 34.

Temperature

24°F Jan (-4°C) 75°F Jul (24°C)
Annual Average48.6°F
10% below US avg
January Average24°F (-4°C)
July Average75°F (24°C)
Sunny Days302 days/yr

Geography

Elevation4,330 ft (1,320 m)
Area0.2 sq mi (0.5 km²)
Population Density1,033/sq mi
Coordinates43.6441°N, 108.1979°W
TimezoneAmerica/Denver
CountyHot Springs County County
Nearest AirportWorland Municipal (WRL)
25 miles away

Precipitation & Snow

Annual Rainfall 12.0"
69% below US avg
Snowfall 27.4"
Wettest Month (May) 2.05"
Driest Month (Feb) 0.35"

Air Quality

AQI Median34.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score16.1 / 100
Social Vulnerability73.4 / 100
Community Resilience13.1 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively Low
Wildfire Relatively Low
Flood Relatively Low
Hail Very Low
Strong Wind Very Low
Heat Wave Very Low
Winter Weather Very Low
Lightning Relatively Low
Ice Storm Very Low
Drought Very Low
Cold Wave Relatively Low
Landslide Relatively Moderate
Volcano Very Low
Avalanche Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

62 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.8. Most recent: M2.5 on Jul 21, 2025.

Sep 21, 2013 20 km W of Fort Washakie, Wyoming M4.8 106 km
Nov 3, 2017 57 km S of Ten Sleep, Wyoming M4.0 67 km
Oct 10, 1992 25 km SSE of Riverton, Wyoming M4.0 92 km
Apr 13, 2021 51 km S of Ten Sleep, Wyoming M3.9 67 km
May 17, 2009 24 km WNW of Jeffrey City, Wyoming M3.7 123 km
Oct 21, 1996 42 km ESE of Boulder, Wyoming M3.7 150 km
Feb 13, 2023 Wyoming M3.7 65 km
Jul 4, 2021 43 km S of Ten Sleep, Wyoming M3.6 66 km
Aug 31, 1992 34 km WNW of Kaycee, Wyoming M3.6 95 km
Aug 7, 1991 31 km NNW of Pavillion, Wyoming M3.5 56 km
Nov 16, 1993 17 km SSE of Ten Sleep, Wyoming M3.5 71 km
Jan 9, 2007 7 km ENE of East Thermopolis, Wyoming M3.5 8 km
Sep 3, 2023 32 km NW of Kaycee, Wyoming M3.3 106 km
Apr 5, 2002 7 km W of South Flat, Wyoming M3.3 34 km
Oct 31, 2017 56 km S of Ten Sleep, Wyoming M3.2 61 km
Aug 19, 2000 36 km W of Jeffrey City, Wyoming M3.2 121 km
Mar 10, 1993 27 km W of Midwest, Wyoming M3.2 130 km
Jan 29, 2012 27 km ENE of Atlantic City, Wyoming M3.2 120 km
Dec 16, 2012 40 km W of Owl Creek, Wyoming M3.1 72 km
Feb 1, 2011 35 km W of Jeffrey City, Wyoming M3.1 122 km
Source: USGS (M2.5+, 1990–2025)

Tornado History

54 tornadoes (EF0+) within 100 km since 1950. Strongest: EF3. Total: 6 injuries.

Date Rating Distance Fatalities
Jun 16, 1962 EF3 91 km 0
Jun 1, 2018 EF2 93 km 0
Jun 1, 2018 EF2 97 km 0
Jul 10, 2001 EF2 21 km 0
Jun 7, 1986 EF2 48 km 0
Jul 4, 1978 EF2 97 km 0
Jul 24, 1967 EF2 81 km 0
Jun 6, 1967 EF2 62 km 0
Jul 9, 1962 EF2 81 km 0
Jun 12, 1962 EF2 94 km 0
May 6, 2014 EF1 40 km 0
Aug 30, 2010 EF1 68 km 0
Jun 1, 2009 EF1 74 km 0
Jun 26, 2001 EF1 94 km 0
Jun 6, 1997 EF1 75 km 0
Aug 3, 1980 EF1 47 km 0
Jun 20, 1977 EF1 99 km 0
Aug 3, 1976 EF1 69 km 0
Jul 4, 1976 EF1 83 km 0
Aug 14, 1974 EF1 94 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: KATESBASIN (141,128 ac, 2000).

Year Name Acres Distance
2000 KATESBASIN 141,128 28 km
1996 EBLACK MTN 53,211 33 km
1996 BATES 47,060 54 km
2018 TEREK 43,872 66 km
2020 NEIBER 17,594 32 km
2006 OUTLAW 2 12,279 99 km
1999 ROOSTER 9,624 72 km
1996 WILLOW 7,723 68 km
1996 BUFFALO 2 7,173 60 km
2018 DENVER JAKE 6,973 37 km
1996 NBROKENBAC 4,921 87 km
2012 OTTER CREEK-UPPER BEE 4,786 76 km
2000 MUDDYCRK 4,601 14 km
2000 MIDDLECREE 4,534 64 km
1996 ANTLER 4,492 71 km
2007 COPPER MTN. 4,458 15 km
2018 ZIMMERMAN 3,655 23 km
2001 RENNER DRA 3,627 68 km
1999 LOWER GRAS 3,489 58 km
2017 BANJO 3,379 41 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 24°F (-4°C) 0.4 in
February 26°F (-3°C) 0.4 in Driest
March 35°F (2°C) 0.8 in
April 44°F (6°C) 1.5 in
May 53°F (12°C) 2.1 in Wettest
June 64°F (18°C) 1.6 in
July 75°F (24°C) 0.8 in Warmest
August 70°F (21°C) 0.8 in
September 59°F (15°C) 1.1 in
October 46°F (8°C) 0.9 in
November 31°F (-0°C) 0.5 in
December 22°F (-6°C) 0.4 in Coldest

East Thermopolis has a seasonal temperature swing of 53°F / from 22°F in December to 75°F in July. Total annual precipitation is 11.0 inches, with May being the wettest month (2.1") and February the driest (0.4").

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