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Weather & Climate in Atlantic City, WY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Atlantic City has a cool climate with an average annual temperature of 37°F (3°C). Winters average 15°F in January while summers reach 61°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 17.9 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 34. The city sits at an elevation of 7,884 feet.
Temperature
15°F Jan (-9°C)
61°F Jul (16°C)
| Annual Average | 36.5°F |
| 32% below US avg | |
| January Average | 15°F (-9°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 7,884 ft (2,403 m) |
| Area | 7.8 sq mi (20.2 km²) |
| Population Density | 3/sq mi |
| Coordinates | 42.5012°N, 108.7329°W |
| Timezone | America/Denver |
| County | Fremont County County |
| Nearest Airport | Central Wyoming Regional (RIW) 41 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 59.7 / 100 |
| Social Vulnerability | 52.8 / 100 |
| Community Resilience | 11.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
101 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Sep 21, 2013 | 20 km W of Fort Washakie, Wyoming | M4.8 | 62 km | 76 km |
| Apr 6, 1999 | 31 km SE of Wamsutter, Wyoming | M4.3 | 143 km | 10 km |
| Jan 30, 2000 | 8 km ESE of Little America, Wyoming | M4.3 | 140 km | 5 km |
| May 26, 2000 | 5 km S of Bairoil, Wyoming | M4.0 | 101 km | 5 km |
| Oct 10, 1992 | 25 km SSE of Riverton, Wyoming | M4.0 | 54 km | 5 km |
| Apr 1, 2011 | 22 km NW of Daniel, Wyoming | M3.9 | 138 km | 5 km |
| May 17, 2009 | 24 km WNW of Jeffrey City, Wyoming | M3.7 | 51 km | 5 km |
| Oct 21, 1996 | 42 km ESE of Boulder, Wyoming | M3.7 | 44 km | 5 km |
| Jun 1, 1993 | 6 km N of Bairoil, Wyoming | M3.7 | 98 km | 5 km |
| Aug 6, 1998 | 18 km NNE of Rawlins, Wyoming | M3.6 | 141 km | 10 km |
| Jun 30, 1998 | 8 km NNW of Point of Rocks, Wyoming | M3.6 | 84 km | 6 km |
| Jun 25, 1994 | 12 km NE of Little America, Wyoming | M3.6 | 130 km | -3 km |
| Jul 2, 2016 | 7 km NNE of Granger, Wyoming | M3.5 | 137 km | -3 km |
| Mar 7, 2009 | 9 km NNE of Granger, Wyoming | M3.5 | 135 km | 1 km |
| Aug 13, 2004 | 35 km SW of Alcova, Wyoming | M3.5 | 148 km | 5 km |
| Jan 9, 2007 | 7 km ENE of East Thermopolis, Wyoming | M3.5 | 139 km | 5 km |
| Aug 7, 1991 | 31 km NNW of Pavillion, Wyoming | M3.5 | 112 km | 5 km |
| Feb 9, 2015 | 11 km NNE of Granger, Wyoming | M3.5 | 132 km | -2 km |
| Apr 23, 2025 | 2 km NNW of Little America, Wyoming | M3.5 | 140 km | -2 km |
| Aug 10, 2025 | 3 km NNW of Little America, Wyoming | M3.5 | 140 km | -2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
24 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 3 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 16, 1962 | EF3 | 47 km | 0.5 mi | 0 |
| Jun 7, 1986 | EF2 | 94 km | 2.0 mi | 0 |
| Aug 27, 1973 | EF2 | 13 km | 0.5 mi | 0 |
| Jun 6, 1967 | EF2 | 74 km | 8.2 mi | 0 |
| May 6, 2014 | EF1 | 94 km | 1.5 mi | 0 |
| Jun 6, 1997 | EF1 | 63 km | 2.0 mi | 0 |
| Aug 3, 1980 | EF1 | 95 km | 0.1 mi | 0 |
| Aug 3, 1976 | EF1 | 95 km | 0.1 mi | 0 |
| Jun 6, 1968 | EF1 | 75 km | 3.0 mi | 0 |
| Jun 5, 1968 | EF1 | 67 km | 0.1 mi | 0 |
| Jun 14, 1967 | EF1 | 57 km | 0.5 mi | 0 |
| Apr 23, 1964 | EF1 | 78 km | 0.5 mi | 0 |
| Sep 4, 2024 | EF0 | 95 km | 0.1 mi | 0 |
| Aug 11, 2020 | EF0 | 70 km | 0.2 mi | 0 |
| May 28, 2018 | EF0 | 18 km | 0.5 mi | 0 |
| May 26, 2017 | EF0 | 99 km | 11.4 mi | 0 |
| May 7, 2014 | EF0 | 85 km | 0.5 mi | 0 |
| May 6, 2014 | EF0 | 85 km | 4.8 mi | 0 |
| Jun 3, 2009 | EF0 | 64 km | 0.9 mi | 0 |
| Sep 30, 2004 | EF0 | 41 km | 1.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: ALPINE LAKE (39,158 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | ALPINE LAKE | 39,158 | 81 km |
| 1988 | FAYETTE | 29,234 | 83 km |
| 2002 | SOUTH FORK II | 13,803 | 58 km |
| 2002 | PASS CREEK | 13,724 | 15 km |
| 1996 | FAYETTE | 5,308 | 95 km |
| 1989 | ANNS | 3,298 | 30 km |
| 2002 | DIVIDE | 2,831 | 68 km |
| 2022 | WASHAKIE PARK | 2,337 | 64 km |
| 2001 | BEAVER RIM | 2,171 | 26 km |
| 1992 | STRATTON | 1,728 | 94 km |
| 2000 | MURPHYDRAW | 1,615 | 18 km |
| 1994 | 17 MILE 6 | 1,564 | 58 km |
| 2000 | RED CANYON | 1,500 | 14 km |
| 2013 | FAIRFIELD | 1,457 | 28 km |
| 2019 | BOULDER LAKE | 1,361 | 87 km |
| 2006 | WASHAKIE PARK | 1,221 | 62 km |
| 1988 | FLATFISH | 1,211 | 99 km |
| 2009 | CHICKEN CREEK | 1,154 | 39 km |
| 1997 | FLAMING DER | 1,080 | 61 km |
| 2015 | SOUTH FORK 1 | 1,073 | 61 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 15°F (-9°C) | 1.4 in | Coldest |
| February | 19°F (-7°C) | 0.9 in | |
| March | 25°F (-4°C) | 1.0 in | |
| April | 32°F (0°C) | 1.3 in | |
| May | 42°F (5°C) | 1.8 in | Wettest |
| June | 51°F (11°C) | 1.4 in | |
| July | 61°F (16°C) | 0.8 in | Warmest, Driest |
| August | 58°F (15°C) | 1.0 in | |
| September | 50°F (10°C) | 1.1 in | |
| October | 40°F (4°C) | 0.9 in | |
| November | 26°F (-3°C) | 0.9 in | |
| December | 19°F (-8°C) | 0.9 in |
Atlantic City has a seasonal temperature swing of 45°F / from 15°F in January to 61°F in July. Total annual precipitation is 13.6 inches, with May being the wettest month (1.8") and July the driest (0.8").