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Grand Lake, CO
Full City Profile · Colorado · Boulder County County
3.6
/5.0
B+
Good
316
Population
307/sq mi density
$100,625
Median Income
$48,650 per capita
$358,300
Home Value
$745,708 Zillow
$810
Median Rent
27.5% income on rent
37°F
Avg Temperature
316 sunny days/yr
338
Violent Crime/100K
1,240 property/100K
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$100,625 median income, 1.4% unemployment
A+
Affordability
4.7 / 5.0
$358,300 home value, $810/mo rent
F
Safety
1.0 / 5.0
338 violent crimes/100K
B+
Education
3.7 / 5.0
34.0% bachelor's degree or higher
Grand Lake has a cool climate with an average annual temperature of 37°F (3°C). Winters average 17°F in January while summers reach 58°F in July. The area gets 316 sunny days per year. Annual precipitation totals 18.6 inches. The area receives 154.9 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
17°F Jan (-8°C)
58°F Jul (14°C)
| Annual Average | 36.9°F |
| 32% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 58°F (14°C) |
| Sunny Days | 316 days/yr |
Geography
| Elevation | 8,589 ft (2,618 m) |
| Area | 1.1 sq mi (2.7 km²) |
| Population Density | 307/sq mi |
| Coordinates | 40.2559°N, 105.8289°W |
| Timezone | America/Denver |
| County | Boulder County County |
| Nearest Airport | Northern Colorado Regional (FNL) 45 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0497 ppm |
| PM2.5 (Fine Particles) | 5.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.7 / 100 |
| Social Vulnerability | 11.4 / 100 |
| Community Resilience | 91.2 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 1.9 in | Coldest |
| February | 19°F (-8°C) | 1.7 in | |
| March | 22°F (-6°C) | 2.4 in | |
| April | 28°F (-3°C) | 2.8 in | Wettest |
| May | 37°F (3°C) | 2.5 in | |
| June | 46°F (8°C) | 2.1 in | |
| July | 58°F (14°C) | 2.3 in | Warmest |
| August | 52°F (11°C) | 2.2 in | |
| September | 45°F (7°C) | 1.9 in | |
| October | 36°F (2°C) | 1.6 in | Driest |
| November | 24°F (-4°C) | 1.8 in | |
| December | 18°F (-8°C) | 1.9 in |
Grand Lake has a seasonal temperature swing of 40°F / from 17°F in January to 58°F in July. Total annual precipitation is 24.8 inches, with April being the wettest month (2.8") and October the driest (1.6").