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Guernsey, WY
Full City Profile · Wyoming · Platte County County
3.1
/5.0
B
Good
815
Population
799/sq mi density
$56,417
Median Income
$37,397 per capita
$160,400
Home Value
$178,299 Zillow
$963
Median Rent
20.3% income on rent
49°F
Avg Temperature
302 sunny days/yr
191
Violent Crime/100K
3,008 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$56,417 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$160,400 home value, $963/mo rent
F
Safety
1.0 / 5.0
191 violent crimes/100K
C+
Education
2.6 / 5.0
19.4% bachelor's degree or higher
Guernsey experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 27°F in January while summers reach 74°F in July. The area gets 302 sunny days per year. Annual precipitation totals 15.1 inches. Air quality is rated Good with a median AQI of 34.
Temperature
27°F Jan (-3°C)
74°F Jul (23°C)
| Annual Average | 48.7°F |
| 10% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 4,340 ft (1,323 m) |
| Area | 1.0 sq mi (2.7 km²) |
| Population Density | 799/sq mi |
| Coordinates | 42.2648°N, 104.7429°W |
| Timezone | America/Denver |
| County | Platte County County |
| Nearest Airport | Western Nebraska Regional/William B Heilig Field (BFF) 65 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 25.7 / 100 |
| Social Vulnerability | 83.9 / 100 |
| Community Resilience | 13.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 0.3 in | Coldest |
| February | 31°F (-1°C) | 0.3 in | Driest |
| March | 37°F (3°C) | 0.7 in | |
| April | 45°F (7°C) | 1.6 in | |
| May | 55°F (13°C) | 2.4 in | Wettest |
| June | 65°F (18°C) | 2.2 in | |
| July | 74°F (23°C) | 1.7 in | Warmest |
| August | 70°F (21°C) | 1.1 in | |
| September | 60°F (16°C) | 1.1 in | |
| October | 48°F (9°C) | 0.8 in | |
| November | 35°F (2°C) | 0.4 in | |
| December | 28°F (-2°C) | 0.4 in |
Guernsey has a seasonal temperature swing of 47°F / from 27°F in January to 74°F in July. Total annual precipitation is 13.0 inches, with May being the wettest month (2.4") and February the driest (0.3").