Hot-summer humid continental

Oak Brook, Illinois

DuPage County, Illinois · Population 8k · 702 ft elevation

Living in Oak Brook

Oak Brook has a hot-summer humid continental climate: hot summers (July highs around 84°F) and cold winters (January lows around 15°F).

Precipitation is wet at about 40″ a year, and it gets a fair bit of snow (42″ a season).

Skies are partly sunny (58% of possible sunshine). Summers get sticky, with about 29 muggy days a year.

Air quality is moderate: a median AQI of 42, with about 6 unhealthy-air days in the latest year.

Oak Brook at a glance

Population
8k
Elevation
702 ft
Average daily high
60°F18th percentile
Average daily low
39°F15th percentile
Annual precipitation
40″38th percentile
Annual snowfall
42″82th percentile
Sunshine hours per year
2,609 hrs22th percentile
Median AQI
4252th percentile
Median home value
$868k95th percentile
Median rent
$2,921/mo98th percentile
Median household income
$171k96th percentile
Property tax rate
1.15%59th percentile
Top state income-tax rate
5.0%
Sales tax (state + local)
8.9%
Unemployment rate
9.7%
Homes with broadband
94%69th percentile
Walkability index
11.072th percentile
Average commute
32 min
Math proficiency (8th grade)
92%99th percentile
Reading proficiency (8th grade)
92%
Violent crime rate
98 per 100k30th percentile
Property crime rate
5,916 per 100k
Overall natural-hazard risk
9879th percentile
Outdoor access
2323th percentile
Public land within 10 miles
3%
Public land within 30 miles
1%
Mountain relief within 30 miles
295 ft

Climate by month

Average monthly weather in Oak Brook, Illinois
MonthHighLowPrecipitationSnowSunshine
Jan31°F15°F2.2″12.6″137 hrs
Feb35°F18°F2.0″14.5″157 hrs
Mar47°F26°F2.4″4.1″194 hrs
Apr59°F36°F3.8″0.8″220 hrs
May71°F47°F4.8″—257 hrs
Jun81°F58°F4.4″—297 hrs
Jul84°F62°F4.3″—329 hrs
Aug83°F60°F4.3″—300 hrs
Sep76°F52°F3.4″—255 hrs
Oct63°F40°F3.6″—188 hrs
Nov48°F30°F2.8″0.6″150 hrs
Dec37°F21°F2.3″9.7″124 hrs

Near Oak Brook

Largest places in Illinois

Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology