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Fairfax, VA
Full City Profile · Virginia · Fairfax city County
3.6
/5.0
B+
Good
24,478
Population
3,923/sq mi density
$132,774
Median Income
$62,800 per capita
$677,400
Home Value
$780,777 Zillow
$2,122
Median Rent
29.8% income on rent
54°F
Avg Temperature
293 sunny days/yr
73
Violent Crime/100K
1,397 property/100K
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$132,774 median income, 3.2% unemployment
B+
Affordability
3.8 / 5.0
$677,400 home value, $2,122/mo rent
F
Safety
1.0 / 5.0
73 violent crimes/100K
A+
Education
5.0 / 5.0
62.3% bachelor's degree or higher
Fairfax experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 33°F in January while summers reach 75°F in July. The area gets 293 sunny days per year. Annual precipitation totals 43.6 inches. The area receives 18.5 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
33°F Jan (0°C)
75°F Jul (24°C)
| Annual Average | 54.0°F |
| 0% below US avg | |
| January Average | 33°F (0°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 377 ft (115 m) |
| Area | 6.3 sq mi (16.2 km²) |
| Population Density | 3,923/sq mi |
| Coordinates | 38.8532°N, 77.2990°W |
| Timezone | America/New_York |
| County | Fairfax city County |
| Nearest Airport | Washington Dulles International (IAD) 11 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 71.9% |
| Unhealthy Days | 3 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 5.3 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 75.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 3.0 in | Coldest |
| February | 36°F (2°C) | 2.7 in | Driest |
| March | 45°F (7°C) | 3.5 in | |
| April | 55°F (13°C) | 3.2 in | |
| May | 64°F (18°C) | 4.1 in | Wettest |
| June | 72°F (22°C) | 3.6 in | |
| July | 75°F (24°C) | 3.7 in | Warmest |
| August | 75°F (24°C) | 3.7 in | |
| September | 69°F (20°C) | 3.7 in | |
| October | 57°F (14°C) | 3.2 in | |
| November | 47°F (8°C) | 3.4 in | |
| December | 38°F (3°C) | 3.2 in |
Fairfax has a seasonal temperature swing of 42°F / from 33°F in January to 75°F in July. Total annual precipitation is 40.8 inches, with May being the wettest month (4.1") and February the driest (2.7").