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Bonanza Mountain Estates, CO
Full City Profile · Colorado · Gilpin County County
2.9
/5.0
C+
Fair
132
Population
776/sq mi density
44°F
Avg Temperature
326 sunny days/yr
4,918
Violent Crime/100K
187,705 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
4,918 violent crimes/100K (1194% above avg)
A+
Education
4.9 / 5.0
48.5% bachelor's degree or higher
Bonanza Mountain Estates has a cool climate with an average annual temperature of 44°F (7°C). Winters average 28°F in January while summers reach 65°F in July. The area gets 326 sunny days per year. Annual precipitation totals 20.3 inches. The area receives 99.1 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
28°F Jan (-2°C)
65°F Jul (18°C)
| Annual Average | 43.9°F |
| 19% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 326 days/yr |
Geography
| Elevation | 8,449 ft (2,575 m) |
| Area | 0.2 sq mi (0.4 km²) |
| Population Density | 776/sq mi |
| Coordinates | 39.9769°N, 105.4796°W |
| Timezone | America/Denver |
| County | Gilpin County County |
| Nearest Airport | Northern Colorado Regional (FNL) 41 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0518 ppm |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 6.4 / 100 |
| Social Vulnerability | 12.8 / 100 |
| Community Resilience | 79.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | No Rating |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 1.0 in | |
| February | 26°F (-3°C) | 0.9 in | Coldest, Driest |
| March | 30°F (-1°C) | 1.3 in | |
| April | 36°F (2°C) | 1.9 in | |
| May | 45°F (7°C) | 2.2 in | |
| June | 54°F (12°C) | 1.9 in | |
| July | 65°F (18°C) | 2.2 in | Warmest, Wettest |
| August | 58°F (15°C) | 2.2 in | |
| September | 51°F (11°C) | 1.5 in | |
| October | 42°F (5°C) | 1.2 in | |
| November | 31°F (-1°C) | 1.1 in | |
| December | 26°F (-3°C) | 1.1 in |
Bonanza Mountain Estates has a seasonal temperature swing of 39°F / from 26°F in February to 65°F in July. Total annual precipitation is 18.5 inches, with July being the wettest month (2.2") and February the driest (0.9").