Humid subtropical
Affton, Missouri
St. Louis County, Missouri · Population 20k · 617 ft elevation
Living in Affton
Affton has a humid subtropical climate: hot summers (July highs around 89°F) and cold winters (January lows around 24°F).
Precipitation is wet at about 44″ a year, and it gets light snow (14″ a season).
Skies are sunny (63% of possible sunshine). Summers get sticky, with about 58 muggy days a year.
Air quality is poor: a median AQI of 55, with about 8 unhealthy-air days in the latest year.
Affton at a glance
- Population
- 20k
- Elevation
- 617 ft
- Average daily high
- 67°F54th percentile
- Average daily low
- 49°F66th percentile
- Annual precipitation
- 44″52th percentile
- Annual snowfall
- 14″50th percentile
- Sunshine hours per year
- 2,821 hrs52th percentile
- Median AQI
- 5593th percentile
- Median home value
- $200k34th percentile
- Median rent
- $978/mo32th percentile
- Median household income
- $77k53th percentile
- Property tax rate
- 1.30%65th percentile
- Top state income-tax rate
- 4.7%
- Sales tax (state + local)
- 8.4%
- Unemployment rate
- 2.5%
- Homes with broadband
- 91%49th percentile
- Walkability index
- 9.663th percentile
- Average commute
- 23 min
- Math proficiency (8th grade)
- 27%19th percentile
- Reading proficiency (8th grade)
- 42%
- Overall natural-hazard risk
- 9986th percentile
- Outdoor access
- 1918th percentile
- Public land within 10 miles
- 0%
- Public land within 30 miles
- 3%
- Mountain relief within 30 miles
- 328 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 40°F | 24°F | 2.7″ | 4.9″ | 159 hrs |
| Feb | 46°F | 28°F | 2.3″ | 3.7″ | 154 hrs |
| Mar | 56°F | 38°F | 3.6″ | 1.2″ | 195 hrs |
| Apr | 67°F | 48°F | 4.8″ | 0.3″ | 241 hrs |
| May | 77°F | 58°F | 4.9″ | — | 277 hrs |
| Jun | 86°F | 67°F | 4.7″ | — | 324 hrs |
| Jul | 89°F | 71°F | 4.2″ | — | 336 hrs |
| Aug | 88°F | 70°F | 3.8″ | — | 307 hrs |
| Sep | 81°F | 61°F | 3.4″ | — | 272 hrs |
| Oct | 69°F | 50°F | 3.2″ | — | 225 hrs |
| Nov | 56°F | 39°F | 3.7″ | 0.8″ | 181 hrs |
| Dec | 45°F | 30°F | 2.6″ | 2.9″ | 150 hrs |
Near Affton
- Green Park, MO · 2.7k
- Lemay, MO · 16k
- Shrewsbury, MO · 6.3k
- Crestwood, MO · 12k
- Concord, MO · 18k
- Webster Groves, MO · 24k
- Sappington, MO · 6.9k
- Mehlville, MO · 29k
Largest places in Missouri
- Kansas City, MO · 508k
- St. Louis, MO · 293k
- Springfield, MO · 169k
- Columbia, MO · 127k
- Independence, MO · 122k
- Lee's Summit, MO · 103k
- O'Fallon, MO · 93k
- St. Joseph, MO · 72k
Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology