Affton, MO
Full City Profile · Missouri
4.4
/5.0
A
Great
20,035
Population
4,384/sq mi density
$77,337
Median Income
$43,832 per capita
$200,300
Home Value
$243,842 Zillow
$978
Median Rent
25.4% income on rent
57°F
Avg Temperature
A
Overall
4.4 / 5.0
Strong
A+
Economy
4.5 / 5.0
$77,337 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$200,300 home value, $978/mo rent
B+
Education
3.8 / 5.0
35.0% bachelor's degree or higher
Affton enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 32°F in January while summers reach 79°F in July. Annual precipitation totals 40.8 inches. The area receives 13.8 inches of snow annually.
Temperature
32°F Jan (0°C)
79°F Jul (26°C)
| Annual Average | 56.5°F |
| 5% above US avg | |
| January Average | 32°F (0°C) |
| July Average | 79°F (26°C) |
Geography
| Elevation | 620 ft (189 m) |
| Area | 4.6 sq mi (11.9 km²) |
| Population Density | 4,384/sq mi |
| Coordinates | 38.5506°N, 90.3332°W |
| Timezone | America/Chicago |
| Nearest Airport | St Louis Lambert International (STL) 14 miles away |
Precipitation & Snow
Air Quality
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 2.5 in | Coldest |
| February | 37°F (3°C) | 2.0 in | Driest |
| March | 46°F (8°C) | 3.3 in | |
| April | 57°F (14°C) | 4.5 in | |
| May | 67°F (19°C) | 4.8 in | Wettest |
| June | 75°F (24°C) | 4.4 in | |
| July | 79°F (26°C) | 3.7 in | Warmest |
| August | 77°F (25°C) | 3.7 in | |
| September | 69°F (21°C) | 3.4 in | |
| October | 58°F (14°C) | 3.1 in | |
| November | 46°F (8°C) | 3.3 in | |
| December | 36°F (2°C) | 2.3 in |
Affton has a seasonal temperature swing of 47°F / from 32°F in January to 79°F in July. Total annual precipitation is 40.8 inches, with May being the wettest month (4.8") and February the driest (2.0").