Fairmount, CO
Full City Profile · Colorado · Broomfield County County
4.7
/5.0
A+
Excellent
10,521
Population
1,730/sq mi density
$163,785
Median Income
$74,059 per capita
$772,600
Home Value
$608,988 Zillow
$2,505
Median Rent
29.2% income on rent
50°F
Avg Temperature
A+
Overall
4.7 / 5.0
Strong
A+
Economy
5.0 / 5.0
$163,785 median income, 1.8% unemployment
A
Affordability
4.0 / 5.0
$772,600 home value, $2,505/mo rent
A+
Education
5.0 / 5.0
61.6% bachelor's degree or higher
Fairmount experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 32°F in January while summers reach 73°F in July. Annual precipitation totals 17.1 inches. The area receives 75.5 inches of snow annually.
Temperature
32°F Jan (0°C)
73°F Jul (23°C)
| Annual Average | 50.3°F |
| 7% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 5,589 ft (1,704 m) |
| Area | 6.2 sq mi (16.0 km²) |
| Population Density | 1,730/sq mi |
| Coordinates | 39.7926°N, 105.1712°W |
| Timezone | America/Denver |
| County | Broomfield County County |
| Nearest Airport | Denver International (DEN) 27 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 34.7 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 81.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Volcano | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 0.6 in | |
| February | 33°F (1°C) | 0.8 in | |
| March | 41°F (5°C) | 1.5 in | |
| April | 48°F (9°C) | 2.3 in | |
| May | 57°F (14°C) | 2.7 in | Wettest |
| June | 67°F (19°C) | 1.7 in | |
| July | 73°F (23°C) | 1.9 in | Warmest |
| August | 70°F (21°C) | 1.6 in | |
| September | 62°F (17°C) | 1.3 in | |
| October | 50°F (10°C) | 1.2 in | |
| November | 39°F (4°C) | 0.9 in | |
| December | 32°F (-0°C) | 0.6 in | Coldest, Driest |
Fairmount has a seasonal temperature swing of 41°F / from 32°F in December to 73°F in July. Total annual precipitation is 17.1 inches, with May being the wettest month (2.7") and December the driest (0.6").