Fontenelle, WY
Full City Profile · Wyoming · Lincoln County County
5.0
/5.0
A+
Excellent
18
Population
5/sq mi density
38°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Fontenelle has a cool climate with an average annual temperature of 38°F (3°C). Winters average 14°F in January while summers reach 64°F in July. Annual precipitation totals 7.5 inches. The area receives 26.5 inches of snow annually. Air quality is rated Good with a median AQI of 31.
Temperature
14°F Jan (-10°C)
64°F Jul (18°C)
| Annual Average | 38.2°F |
| 29% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 64°F (18°C) |
Geography
| Elevation | 6,430 ft (1,960 m) |
| Area | 3.5 sq mi (9.0 km²) |
| Population Density | 5/sq mi |
| Coordinates | 42.0033°N, 110.0622°W |
| Timezone | America/Denver |
| County | Lincoln County County |
| Nearest Airport | Southwest Wyoming Regional (RKS) 59 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 31.0 |
| Rating | Good |
| Good Days % | 92.9% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0512 ppm |
| NO₂ (Nitrogen Dioxide) | 10.0 ppb |
| SO₂ (Sulfur Dioxide) | 0.54 ppb |
| PM2.5 (Fine Particles) | 2.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 51.9 / 100 |
| Social Vulnerability | 29.1 / 100 |
| Community Resilience | 15.1 / 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 | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 14°F (-10°C) | 0.4 in | Coldest |
| February | 17°F (-8°C) | 0.4 in | |
| March | 29°F (-2°C) | 0.5 in | |
| April | 37°F (3°C) | 0.8 in | |
| May | 47°F (8°C) | 1.4 in | Wettest |
| June | 56°F (13°C) | 0.8 in | |
| July | 64°F (18°C) | 0.5 in | Warmest |
| August | 62°F (17°C) | 0.7 in | |
| September | 53°F (11°C) | 0.9 in | |
| October | 40°F (4°C) | 0.7 in | |
| November | 26°F (-4°C) | 0.3 in | |
| December | 14°F (-10°C) | 0.3 in | Driest |
Fontenelle has a seasonal temperature swing of 50°F / from 14°F in January to 64°F in July. Total annual precipitation is 7.6 inches, with May being the wettest month (1.4") and December the driest (0.3").