Merrifield, VA
Full City Profile · Virginia · Fairfax County County
4.6
/5.0
A+
Excellent
20,549
Population
7,611/sq mi density
$136,173
Median Income
$74,432 per capita
$637,600
Home Value
$1,207,899 Zillow
$2,308
Median Rent
24.6% income on rent
54°F
Avg Temperature
A+
Overall
4.6 / 5.0
Strong
A+
Economy
4.9 / 5.0
$136,173 median income, 2.2% unemployment
A
Affordability
4.0 / 5.0
$637,600 home value, $2,308/mo rent
A+
Education
5.0 / 5.0
76.0% bachelor's degree or higher
Merrifield 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. 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) |
Geography
| Elevation | 338 ft (103 m) |
| Area | 2.7 sq mi (7.0 km²) |
| Population Density | 7,611/sq mi |
| Coordinates | 38.8720°N, 77.2397°W |
| Timezone | America/New_York |
| County | Fairfax County County |
| Nearest Airport | Ronald Reagan Washington Ntl (DCA) 11 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 71.9% |
| Unhealthy Days | 3 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0461 ppm |
| NO₂ (Nitrogen Dioxide) | 22.4 ppb |
| SO₂ (Sulfur Dioxide) | 0.23 ppb |
| CO (Carbon Monoxide) | 0.33 ppm |
| PM2.5 (Fine Particles) | 8.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 94.7 / 100 |
| Social Vulnerability | 11.4 / 100 |
| Community Resilience | 59.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 3.3 in | Coldest |
| February | 35°F (2°C) | 2.6 in | Driest |
| March | 42°F (6°C) | 3.8 in | |
| April | 53°F (12°C) | 3.4 in | |
| May | 62°F (17°C) | 4.3 in | Wettest |
| June | 70°F (21°C) | 4.1 in | |
| July | 75°F (24°C) | 4.3 in | Warmest |
| August | 74°F (23°C) | 3.5 in | |
| September | 67°F (19°C) | 4.2 in | |
| October | 55°F (13°C) | 3.5 in | |
| November | 45°F (7°C) | 3.1 in | |
| December | 37°F (3°C) | 3.4 in |
Merrifield has a seasonal temperature swing of 42°F / from 33°F in January to 75°F in July. Total annual precipitation is 43.6 inches, with May being the wettest month (4.3") and February the driest (2.6").