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Decatur, GA
Full City Profile · Georgia · DeKalb County County
3.8
/5.0
B+
Good
24,470
Population
5,308/sq mi density
$140,480
Median Income
$73,735 per capita
$655,900
Home Value
$277,821 Zillow
$1,716
Median Rent
27.3% income on rent
62°F
Avg Temperature
304 sunny days/yr
148
Violent Crime/100K
3,078 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$140,480 median income, 2.3% unemployment
A
Affordability
4.0 / 5.0
$655,900 home value, $1,716/mo rent
F
Safety
1.0 / 5.0
148 violent crimes/100K
A+
Education
5.0 / 5.0
77.3% bachelor's degree or higher
Decatur enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 42°F in January while summers reach 80°F in July. The area gets 304 sunny days per year. Annual precipitation totals 51.4 inches. Air quality is rated Good with a median AQI of 44.
Temperature
42°F Jan (6°C)
80°F Jul (26°C)
| Annual Average | 61.5°F |
| 14% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 80°F (26°C) |
| Sunny Days | 304 days/yr |
Geography
| Elevation | 1,013 ft (309 m) |
| Area | 4.3 sq mi (11.1 km²) |
| Population Density | 5,308/sq mi |
| Coordinates | 33.7711°N, 84.2958°W |
| Timezone | America/New_York |
| County | DeKalb County County |
| Nearest Airport | Hartsfield - Jackson Atlanta International (ATL) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0408 ppm |
| NO₂ (Nitrogen Dioxide) | 19.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.16 ppb |
| CO (Carbon Monoxide) | 0.31 ppm |
| PM2.5 (Fine Particles) | 9.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.3 / 100 |
| Social Vulnerability | 37.7 / 100 |
| Community Resilience | 33.4 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Ice Storm | Very High |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 5.0 in | Coldest |
| February | 46°F (8°C) | 4.7 in | |
| March | 54°F (12°C) | 5.6 in | Wettest |
| April | 61°F (16°C) | 4.1 in | |
| May | 69°F (21°C) | 4.1 in | |
| June | 76°F (25°C) | 3.7 in | |
| July | 80°F (26°C) | 4.9 in | Warmest |
| August | 78°F (26°C) | 3.9 in | |
| September | 73°F (23°C) | 3.7 in | |
| October | 62°F (17°C) | 3.4 in | Driest |
| November | 53°F (12°C) | 3.8 in | |
| December | 45°F (7°C) | 4.3 in |
Decatur has a seasonal temperature swing of 37°F / from 42°F in January to 80°F in July. Total annual precipitation is 51.2 inches, with March being the wettest month (5.6") and October the driest (3.4").