Hot-summer humid continental

Island Lake, Illinois

McHenry County, Illinois · Population 8k · 794 ft elevation

Living in Island Lake

Island Lake has a hot-summer humid continental climate: hot summers (July highs around 84°F) and cold winters (January lows around 13°F).

Precipitation is wet at about 37″ a year, and it gets a fair bit of snow (35″ a season).

Skies are partly sunny (58% of possible sunshine). Summers get sticky, with about 27 muggy days a year.

Air quality is moderate: a median AQI of 42, with about 12 unhealthy-air days in the latest year.

Island Lake at a glance

Population
8k
Elevation
794 ft
Average daily high
59°F13th percentile
Average daily low
38°F12th percentile
Annual precipitation
37″30th percentile
Annual snowfall
35″76th percentile
Sunshine hours per year
2,610 hrs23th percentile
Median AQI
4252th percentile
Median home value
$242k45th percentile
Median rent
$1,855/mo83th percentile
Median household income
$98k72th percentile
Property tax rate
2.59%97th percentile
Top state income-tax rate
5.0%
Sales tax (state + local)
8.9%
Unemployment rate
6.7%
Homes with broadband
96%82th percentile
Walkability index
8.142th percentile
Average commute
32 min
Math proficiency (8th grade)
42%42th percentile
Reading proficiency (8th grade)
57%
Violent crime rate
25 per 100k7th percentile
Property crime rate
434 per 100k
Overall natural-hazard risk
9151th percentile
Outdoor access
3232th percentile
Public land within 10 miles
1%
Public land within 30 miles
2%
Mountain relief within 30 miles
394 ft

Climate by month

Average monthly weather in Island Lake, Illinois
MonthHighLowPrecipitationSnowSunshine
Jan30°F13°F1.6″11.0″136 hrs
Feb34°F16°F1.6″8.9″157 hrs
Mar46°F26°F2.2″3.9″194 hrs
Apr59°F36°F3.6″1.0″220 hrs
May70°F47°F4.5″—258 hrs
Jun80°F57°F4.8″—298 hrs
Jul84°F61°F3.8″—330 hrs
Aug82°F60°F3.7″—300 hrs
Sep76°F51°F3.6″—255 hrs
Oct63°F39°F3.2″0.1″188 hrs
Nov48°F29°F2.4″1.4″150 hrs
Dec36°F19°F1.9″8.2″124 hrs

Near Island Lake

Largest places in Illinois

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