Reliance, WY

Full City Profile · Wyoming · Sweetwater County County

4.3 /5.0
A Great
400 Population 97/sq mi density
$27,400 Home Value $283,749 Zillow
$816 Median Rent 35.7% income on rent
44°F Avg Temperature
A
Overall
4.3 / 5.0
Strong
A
Education
4.3 / 5.0
41.7% bachelor's degree or higher
Reliance has a cool climate with an average annual temperature of 44°F (7°C). Winters average 22°F in January while summers reach 69°F in July. Annual precipitation totals 7.5 inches. The area receives 54.0 inches of snow annually. Air quality is rated Good with a median AQI of 45.

Temperature

22°F Jan (-6°C) 69°F Jul (21°C)
Annual Average43.7°F
19% below US avg
January Average22°F (-6°C)
July Average69°F (21°C)

Geography

Elevation6,513 ft (1,985 m)
Area4.1 sq mi (10.7 km²)
Population Density97/sq mi
Coordinates41.6682°N, 109.1977°W
TimezoneAmerica/Denver
CountySweetwater County County
Nearest AirportSouthwest Wyoming Regional (RKS)
9 miles away

Precipitation & Snow

Annual Rainfall 7.5"
80% below US avg
Snowfall 54.0"
Wettest Month (May) 1.27"
Driest Month (Dec) 0.31"

Air Quality

AQI Median45.0
RatingGood
Good Days %67.5%
Unhealthy Days10

Air Pollutants (EPA 2023)

Ozone (O₃)0.0519 ppm
NO₂ (Nitrogen Dioxide)4.6 ppb
SO₂ (Sulfur Dioxide)1.08 ppb
PM2.5 (Fine Particles)3.7 μg/m³

Natural Hazard Risk

Overall RiskVery Low
Risk Score30.6 / 100
Social Vulnerability19.3 / 100
Community Resilience16.4 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively Low
Wildfire Relatively Low
Flood Relatively Low
Hail Very Low
Strong Wind Very Low
Heat Wave No Rating
Winter Weather Relatively High
Lightning Relatively Low
Ice Storm Very Low
Drought Very Low
Cold Wave Relatively Low
Landslide Relatively Moderate
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

91 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.8. Most recent: M3.5 on Aug 10, 2025.

Sep 21, 2013 20 km W of Fort Washakie, Wyoming M4.8 145 km
Apr 6, 1999 31 km SE of Wamsutter, Wyoming M4.3 124 km
Jan 30, 2000 8 km ESE of Little America, Wyoming M4.3 51 km
May 26, 2000 5 km S of Bairoil, Wyoming M4.0 147 km
Oct 21, 1996 42 km ESE of Boulder, Wyoming M3.7 98 km
May 17, 2009 24 km WNW of Jeffrey City, Wyoming M3.7 132 km
Jun 30, 1998 8 km NNW of Point of Rocks, Wyoming M3.6 32 km
Jun 25, 1994 12 km NE of Little America, Wyoming M3.6 46 km
Jul 2, 2016 7 km NNE of Granger, Wyoming M3.5 62 km
Mar 7, 2009 9 km NNE of Granger, Wyoming M3.5 60 km
Feb 9, 2015 11 km NNE of Granger, Wyoming M3.5 58 km
Apr 23, 2025 2 km NNW of Little America, Wyoming M3.5 57 km
Aug 10, 2025 3 km NNW of Little America, Wyoming M3.5 58 km
Oct 15, 2013 14 km NNE of Granger, Wyoming M3.4 59 km
Jul 1, 2016 20 km NE of Granger, Wyoming M3.4 53 km
Jun 5, 2007 15 km NNW of Granger, Wyoming M3.4 70 km
Feb 9, 2008 9 km NE of Granger, Wyoming M3.3 58 km
Feb 20, 2025 2 km N of Little America, Wyoming M3.3 57 km
Jan 29, 2012 27 km ENE of Atlantic City, Wyoming M3.2 120 km
Mar 5, 2025 3 km NW of Little America, Wyoming M3.2 59 km
Source: USGS (M2.5+, 1990-2025)

Tornado History

26 tornadoes (EF0+) within 100 km since 1950. Strongest: EF1.

Date Rating Distance Fatalities
Jul 10, 2001 EF1 77 km 0
Apr 20, 2001 EF1 35 km 0
Apr 14, 2000 EF1 35 km 0
Jul 31, 1978 EF1 8 km 0
Jun 27, 1974 EF1 28 km 0
Sep 9, 1973 EF1 29 km 0
May 28, 2018 EF0 83 km 0
May 28, 2018 EF0 62 km 0
May 26, 2017 EF0 64 km 0
Jul 7, 2015 EF0 87 km 0
Jun 16, 2015 EF0 100 km 0
May 7, 2014 EF0 31 km 0
Sep 15, 2013 EF0 46 km 0
Aug 21, 2001 EF0 94 km 0
May 5, 1999 EF0 89 km 0
Jun 10, 1997 EF0 32 km 0
May 25, 1995 EF0 83 km 0
May 15, 1992 EF0 51 km 0
Sep 9, 1991 EF0 72 km 0
Aug 4, 1990 EF0 68 km 0
Source: NOAA SPC (EF0+, 1950-2024)

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: WLD HORSE (41,881 ac, 2000).

Year Name Acres Distance
2000 WLD HORSE 41,881 47 km
2000 SHEEP MT 31,393 46 km
2002 MUSTANG 20,607 83 km
2018 LANEY RIM 11,589 55 km
2020 RICHARD MTN 7,802 75 km
1997 RED CREEK 5,381 73 km
2006 SALT WELLS BASIN 4,581 59 km
2018 BENDER MOUNTAIN 3,797 79 km
2021 WEST 3,588 78 km
2018 BLACK BUTTE 3,124 38 km
2007 MARSHALL PHASE II 2,834 99 km
2004 MAIL DRAW 2,601 99 km
1986 BIG JOE 2,536 99 km
2015 BITTER CREEK 2,372 43 km
2000 SAGE CREEK 3 2,228 34 km
1994 SUBSTATION 2,018 66 km
1998 BOULDERLAK MVD 2,016 86 km
1988 GREEN RIVER 1,924 88 km
2002 PEPPER 1,684 55 km
2002 VENGENCE 1,418 41 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 22°F (-6°C) 0.4 in
February 24°F (-4°C) 0.4 in
March 34°F (1°C) 0.6 in
April 41°F (5°C) 0.9 in
May 51°F (10°C) 1.3 in Wettest
June 61°F (16°C) 0.7 in
July 69°F (21°C) 0.5 in Warmest
August 67°F (20°C) 0.6 in
September 57°F (14°C) 0.8 in
October 45°F (7°C) 0.8 in
November 31°F (-0°C) 0.4 in
December 21°F (-6°C) 0.3 in Coldest, Driest

Reliance has a seasonal temperature swing of 48°F / from 21°F in December to 69°F in July. Total annual precipitation is 7.6 inches, with May being the wettest month (1.3") and December the driest (0.3").

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