Hot-summer humid continental
Decatur, Illinois
Macon County, Illinois · Population 70k · 676 ft elevation
Living in Decatur
Decatur has a hot-summer humid continental climate: hot summers (July highs around 85°F) and cold winters (January lows around 20°F).
Precipitation is wet at about 40″ a year, and it gets light snow (14″ a season).
Skies are sunny (60% of possible sunshine). Summers get sticky, with about 48 muggy days a year.
Air quality is moderate: a median AQI of 44, with about 3 unhealthy-air days in the latest year.
Decatur at a glance
- Population
- 70k
- Elevation
- 676 ft
- Average daily high
- 62°F30th percentile
- Average daily low
- 44°F41th percentile
- Annual precipitation
- 40″38th percentile
- Annual snowfall
- 14″50th percentile
- Sunshine hours per year
- 2,726 hrs42th percentile
- Median AQI
- 4462th percentile
- Median home value
- $97k5th percentile
- Median rent
- $796/mo13th percentile
- Median household income
- $51k16th percentile
- Property tax rate
- 2.21%93th percentile
- Top state income-tax rate
- 5.0%
- Sales tax (state + local)
- 8.9%
- Unemployment rate
- 8.9%
- Homes with broadband
- 83%14th percentile
- Walkability index
- 7.736th percentile
- Average commute
- 17 min
- Math proficiency (8th grade)
- 9%2th percentile
- Reading proficiency (8th grade)
- 16%
- Violent crime rate
- 682 per 100k94th percentile
- Property crime rate
- 2,621 per 100k
- Overall natural-hazard risk
- 8336th percentile
- Outdoor access
- 22th percentile
- Public land within 10 miles
- 1%
- Public land within 30 miles
- 0%
- Mountain relief within 30 miles
- 164 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 34°F | 20°F | 2.4″ | 5.9″ | 144 hrs |
| Feb | 39°F | 23°F | 2.0″ | 2.5″ | 156 hrs |
| Mar | 51°F | 33°F | 2.6″ | 0.9″ | 194 hrs |
| Apr | 63°F | 43°F | 4.1″ | 0.4″ | 230 hrs |
| May | 73°F | 54°F | 5.0″ | — | 266 hrs |
| Jun | 82°F | 63°F | 4.7″ | — | 311 hrs |
| Jul | 85°F | 66°F | 4.0″ | — | 337 hrs |
| Aug | 83°F | 65°F | 3.5″ | — | 311 hrs |
| Sep | 78°F | 57°F | 3.1″ | — | 270 hrs |
| Oct | 65°F | 46°F | 3.4″ | — | 207 hrs |
| Nov | 50°F | 34°F | 3.2″ | 0.4″ | 167 hrs |
| Dec | 39°F | 25°F | 2.4″ | 3.5″ | 133 hrs |
Near Decatur
- Forsyth, IL · 3.7k
- Mount Zion, IL · 6.1k
- Clinton, IL · 7k
- Monticello, IL · 6.3k
- Sullivan, IL · 4.3k
- Taylorville, IL · 11k
- Lincoln, IL · 13k
- Shelbyville, IL · 4.2k
Largest places in Illinois
- Chicago, IL · 2.7M
- Aurora, IL · 180k
- Joliet, IL · 150k
- Naperville, IL · 149k
- Rockford, IL · 148k
- Elgin, IL · 114k
- Springfield, IL · 114k
- Peoria, IL · 112k
Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology