Atlantic City, WY
Full City Profile · Wyoming · Fremont County County
4.6
/5.0
A+
Excellent
27
Population
3/sq mi density
37°F
Avg Temperature
A+
Overall
4.6 / 5.0
Strong
A+
Education
4.6 / 5.0
45.0% bachelor's degree or higher
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. Annual precipitation totals 17.9 inches. The area receives 87.6 inches of snow annually. Air quality is rated Good with a median AQI of 49.
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) |
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 | 49.0 |
| Rating | Good |
| Good Days % | 57.4% |
| Unhealthy Days | 5 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0494 ppm |
| NO₂ (Nitrogen Dioxide) | 2.8 ppb |
| SO₂ (Sulfur Dioxide) | 1.82 ppb |
| PM2.5 (Fine Particles) | 4.0 μg/m³ |
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)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 15°F (-9°C) | 1.0 in | Coldest |
| February | 19°F (-7°C) | 1.5 in | |
| March | 26°F (-4°C) | 1.6 in | |
| April | 34°F (1°C) | 1.9 in | |
| May | 43°F (6°C) | 2.6 in | Wettest |
| June | 53°F (12°C) | 1.6 in | |
| July | 61°F (16°C) | 0.8 in | Warmest, Driest |
| August | 59°F (15°C) | 1.1 in | |
| September | 50°F (10°C) | 1.3 in | |
| October | 37°F (3°C) | 1.6 in | |
| November | 25°F (-4°C) | 1.6 in | |
| December | 17°F (-9°C) | 1.5 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 17.9 inches, with May being the wettest month (2.6") and July the driest (0.8").