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Granby, CO
Full City Profile · Colorado · Boulder County County
3.8
/5.0
B+
Good
2,195
Population
173/sq mi density
$82,321
Median Income
$45,478 per capita
$415,700
Home Value
$773,121 Zillow
$1,292
Median Rent
20.2% income on rent
38°F
Avg Temperature
316 sunny days/yr
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$82,321 median income, 1.8% unemployment
B+
Affordability
3.8 / 5.0
$415,700 home value, $1,292/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A
Education
4.4 / 5.0
42.7% bachelor's degree or higher
Granby has a cool climate with an average annual temperature of 38°F (3°C). Winters average 14°F in January while summers reach 59°F in July. The area gets 316 sunny days per year. Annual precipitation totals 13.8 inches. Air quality is rated Good with a median AQI of 41.
Temperature
14°F Jan (-10°C)
59°F Jul (15°C)
| Annual Average | 37.5°F |
| 31% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 59°F (15°C) |
| Sunny Days | 316 days/yr |
Geography
| Elevation | 7,993 ft (2,436 m) |
| Area | 12.8 sq mi (33.0 km²) |
| Population Density | 173/sq mi |
| Coordinates | 40.0648°N, 105.9194°W |
| Timezone | America/Denver |
| County | Boulder County County |
| Nearest Airport | Northern Colorado Regional (FNL) 55 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 | 14°F (-10°C) | 1.5 in | Coldest |
| February | 20°F (-7°C) | 1.2 in | |
| March | 27°F (-3°C) | 1.4 in | |
| April | 35°F (2°C) | 1.6 in | |
| May | 45°F (7°C) | 1.6 in | |
| June | 54°F (12°C) | 1.5 in | |
| July | 59°F (15°C) | 1.8 in | Warmest |
| August | 58°F (14°C) | 1.9 in | Wettest |
| September | 50°F (10°C) | 1.5 in | |
| October | 40°F (4°C) | 1.2 in | Driest |
| November | 27°F (-3°C) | 1.3 in | |
| December | 18°F (-8°C) | 1.5 in |
Granby has a seasonal temperature swing of 45°F / from 14°F in January to 59°F in July. Total annual precipitation is 17.9 inches, with August being the wettest month (1.9") and October the driest (1.2").