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Weather & Climate in Kemmerer, WY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kemmerer has a cool climate with an average annual temperature of 39°F (4°C). Winters average 17°F in January while summers reach 63°F in July. The area gets 322 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 9.4 inches (drier than the 38-inch national average). The area receives 49.7 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 34. The city sits at an elevation of 7,148 feet.
Temperature
17°F Jan (-9°C)
63°F Jul (17°C)
| Annual Average | 38.5°F |
| 29% below US avg | |
| January Average | 17°F (-9°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 322 days/yr |
Geography
| Elevation | 7,148 ft (2,179 m) |
| Area | 7.8 sq mi (20.2 km²) |
| Population Density | 349/sq mi |
| Coordinates | 41.7785°N, 110.5528°W |
| Timezone | America/Denver |
| County | Uinta County County |
| Nearest Airport | Southwest Wyoming Regional (RKS) 78 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 16.7 / 100 |
| Social Vulnerability | 15.0 / 100 |
| Community Resilience | 12.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | No Rating |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1,206 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.
| Feb 3, 1994 | 4 km SSE of Auburn, Wyoming | M5.8 | 115 km | 8 km |
| Apr 21, 2001 | 29 km WSW of Freedom, Idaho | M5.3 | 145 km | 1 km |
| Sep 2, 2017 | 12 km E of Soda Springs, Idaho | M5.3 | 122 km | 10 km |
| Sep 10, 2017 | 9 km NNW of Georgetown, Idaho | M5.0 | 113 km | 10 km |
| Apr 15, 2010 | 9 km NE of Randolph, Utah | M4.9 | 46 km | 10 km |
| Feb 11, 1994 | 3 km SSE of Auburn, Wyoming | M4.8 | 116 km | 5 km |
| Sep 11, 2017 | 9 km NW of Georgetown, Idaho | M4.7 | 113 km | 8 km |
| Sep 3, 2017 | 10 km E of Soda Springs, Idaho | M4.7 | 122 km | 8 km |
| Sep 10, 2017 | 12 km ESE of Soda Springs, Idaho | M4.7 | 119 km | 5 km |
| Feb 4, 1994 | 4 km WNW of Fairview, Wyoming | M4.7 | 111 km | 5 km |
| Sep 3, 2017 | 15 km ESE of Soda Springs, Idaho | M4.7 | 118 km | 10 km |
| Sep 6, 2017 | 11 km NNW of Georgetown, Idaho | M4.6 | 115 km | 10 km |
| Feb 7, 1994 | 4 km SW of Fairview, Wyoming | M4.5 | 105 km | 5 km |
| Sep 4, 2017 | 13 km ESE of Soda Springs, Idaho | M4.5 | 119 km | 6 km |
| Feb 3, 1994 | 13 km WSW of Auburn, Wyoming | M4.4 | 116 km | 5 km |
| Feb 3, 1994 | 0 km NNE of Auburn, Wyoming | M4.4 | 119 km | 5 km |
| Jan 26, 2018 | 5 km NNW of Georgetown, Idaho | M4.4 | 109 km | 10 km |
| Feb 3, 1994 | 2 km SW of Auburn, Wyoming | M4.4 | 117 km | 5 km |
| Feb 10, 1994 | 3 km WSW of Auburn, Wyoming | M4.4 | 119 km | 5 km |
| Apr 7, 1994 | 11 km SW of Smoot, Wyoming | M4.3 | 96 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
27 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 6 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 10, 1950 | EF2 | 68 km | 2.0 mi | 0 |
| Jul 10, 2001 | EF1 | 36 km | 5.0 mi | 0 |
| Apr 20, 2001 | EF1 | 87 km | 0.2 mi | 0 |
| Apr 14, 2000 | EF1 | 87 km | 0.5 mi | 0 |
| Aug 20, 1998 | EF1 | 99 km | 0.1 mi | 0 |
| Jun 27, 1974 | EF1 | 93 km | 0.1 mi | 0 |
| Sep 9, 1973 | EF1 | 87 km | 0.1 mi | 0 |
| Jun 23, 1965 | EF1 | 59 km | 0.6 mi | 0 |
| May 25, 1954 | EF1 | 64 km | 0.5 mi | 0 |
| Apr 26, 2019 | EF0 | 94 km | 0.1 mi | 0 |
| May 28, 2018 | EF0 | 55 km | 3.5 mi | 0 |
| May 7, 2014 | EF0 | 98 km | 0.5 mi | 0 |
| Sep 15, 2013 | EF0 | 73 km | 0.1 mi | 0 |
| Jul 7, 2013 | EF0 | 81 km | 1.0 mi | 0 |
| Jun 10, 1998 | EF0 | 86 km | 0.1 mi | 0 |
| Jul 19, 1997 | EF0 | 100 km | 3.0 mi | 0 |
| Jun 14, 1997 | EF0 | 68 km | 0.5 mi | 0 |
| Sep 9, 1991 | EF0 | 68 km | 0.4 mi | 0 |
| Sep 9, 1991 | EF0 | 52 km | 0.5 mi | 0 |
| May 2, 1991 | EF0 | 96 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: FONTENELLE (58,125 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | FONTENELLE | 58,125 | 84 km |
| 1999 | BRIDGER BA | 15,227 | 32 km |
| 2000 | FONTENELLE | 14,894 | 50 km |
| 2018 | NORTH EDEN | 14,398 | 47 km |
| 2007 | RED CANYON RX BURN-H | 13,464 | 19 km |
| 1994 | DRY CANYON 2 | 10,927 | 62 km |
| 2010 | POLE CREEK STANDS | 6,900 | 41 km |
| 2010 | WINDMILL | 5,935 | 55 km |
| 1988 | LITTLEBRYN | 5,300 | 52 km |
| 2012 | HELLS HOLLOW | 4,758 | 79 km |
| 2005 | ROCK CREEK RX | 4,302 | 24 km |
| 1994 | EDGAR CANYON | 4,260 | 72 km |
| 1992 | DESERET/SPRING CANYON | 3,861 | 80 km |
| 2002 | COMMISARY | 3,840 | 37 km |
| 2010 | GIRAFFE CREEK | 3,552 | 89 km |
| 2017 | POLE CREEK | 3,395 | 46 km |
| 1988 | SIESMIC | 2,969 | 12 km |
| 2007 | SWEETWATER | 2,942 | 53 km |
| 1985 | BOUNDARY | 2,550 | 57 km |
| 1997 | COAL CREEK | 2,447 | 57 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-9°C) | 0.6 in | Coldest |
| February | 20°F (-7°C) | 0.6 in | Driest |
| March | 28°F (-2°C) | 0.6 in | |
| April | 37°F (3°C) | 0.8 in | |
| May | 46°F (8°C) | 1.2 in | Wettest |
| June | 55°F (13°C) | 1.1 in | |
| July | 63°F (17°C) | 0.8 in | Warmest |
| August | 61°F (16°C) | 0.9 in | |
| September | 52°F (11°C) | 1.1 in | |
| October | 40°F (5°C) | 0.8 in | |
| November | 27°F (-3°C) | 0.8 in | |
| December | 18°F (-8°C) | 0.7 in |
Kemmerer has a seasonal temperature swing of 46°F / from 17°F in January to 63°F in July. Total annual precipitation is 10.1 inches, with May being the wettest month (1.2") and February the driest (0.6").