Decatur, TN
Full City Profile · Tennessee · Meigs County County
2.2
/5.0
C
Fair
1,860
Population
489/sq mi density
$48,203
Median Income
$26,271 per capita
$218,800
Home Value
$280,432 Zillow
$821
Median Rent
24.0% income on rent
58°F
Avg Temperature
303
Violent Crime/100K
2,423 property/100K
C
Overall
2.2 / 5.0
Fair overall score based on economy, affordability, safety and education
D
Economy
1.7 / 5.0
$48,203 median income, 21.0% unemployment
A
Affordability
4.1 / 5.0
$218,800 home value, $821/mo rent
F
Safety
1.0 / 5.0
303 violent crimes/100K
D
Education
1.8 / 5.0
10.5% bachelor's degree or higher
Decatur enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 38°F in January while summers reach 78°F in July. Annual precipitation totals 57.6 inches. The area receives 3.3 inches of snow annually.
Temperature
38°F Jan (3°C)
78°F Jul (26°C)
| Annual Average | 58.4°F |
| 8% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 78°F (26°C) |
Geography
| Elevation | 898 ft (274 m) |
| Area | 3.0 sq mi (7.8 km²) |
| Population Density | 489/sq mi |
| Coordinates | 35.5291°N, 84.7933°W |
| Timezone | America/Chicago |
| County | Meigs County County |
| Nearest Airport | Mc Ghee Tyson (TYS) 49 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 12.7 / 100 |
| Social Vulnerability | 77.8 / 100 |
| Community Resilience | 35.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 5.6 in | Coldest |
| February | 41°F (5°C) | 5.2 in | |
| March | 49°F (9°C) | 5.3 in | |
| April | 58°F (14°C) | 5.4 in | |
| May | 66°F (19°C) | 4.6 in | |
| June | 74°F (24°C) | 4.8 in | |
| July | 78°F (26°C) | 5.4 in | Warmest |
| August | 77°F (25°C) | 3.3 in | |
| September | 71°F (22°C) | 4.4 in | |
| October | 59°F (15°C) | 3.2 in | Driest |
| November | 48°F (9°C) | 4.7 in | |
| December | 41°F (5°C) | 5.7 in | Wettest |
Decatur has a seasonal temperature swing of 40°F / from 38°F in January to 78°F in July. Total annual precipitation is 57.6 inches, with December being the wettest month (5.7") and October the driest (3.2").