Riverwoods, IL
Full City Profile · Illinois · Lake County County
4.0
/5.0
A
Great
3,988
Population
1,005/sq mi density
$243,036
Median Income
$112,114 per capita
$796,100
Home Value
$1,008,557 Zillow
$3,175
Median Rent
51.0% income on rent
51°F
Avg Temperature
54
Violent Crime/100K
618 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
5.0 / 5.0
$243,036 median income, 0.9% unemployment
A+
Affordability
4.8 / 5.0
$796,100 home value, $3,175/mo rent
F
Safety
1.0 / 5.0
54 violent crimes/100K
A+
Education
5.0 / 5.0
76.4% bachelor's degree or higher
Riverwoods experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 25°F in January while summers reach 75°F in July. Annual precipitation totals 32.3 inches. The area receives 33.6 inches of snow annually. Air quality is rated Good with a median AQI of 40.
Temperature
25°F Jan (-4°C)
75°F Jul (24°C)
| Annual Average | 50.8°F |
| 6% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 682 ft (208 m) |
| Area | 1.6 sq mi (4.0 km²) |
| Population Density | 1,005/sq mi |
| Coordinates | 42.1729°N, 87.8949°W |
| Timezone | America/Chicago |
| County | Lake County County |
| Nearest Airport | Chicago O'Hare International (ORD) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
| Good Days % | 82.0% |
| Unhealthy Days | 5 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0480 ppm |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.0 / 100 |
| Social Vulnerability | 14.1 / 100 |
| Community Resilience | 78.1 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 99 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 1.3 in | Coldest |
| February | 29°F (-2°C) | 1.3 in | Driest |
| March | 38°F (4°C) | 1.8 in | |
| April | 49°F (9°C) | 3.3 in | |
| May | 60°F (15°C) | 3.8 in | |
| June | 70°F (21°C) | 4.0 in | Wettest |
| July | 75°F (24°C) | 3.2 in | Warmest |
| August | 73°F (23°C) | 3.7 in | |
| September | 66°F (19°C) | 3.0 in | |
| October | 54°F (12°C) | 3.1 in | |
| November | 41°F (5°C) | 2.2 in | |
| December | 30°F (-1°C) | 1.6 in |
Riverwoods has a seasonal temperature swing of 50°F / from 25°F in January to 75°F in July. Total annual precipitation is 32.3 inches, with June being the wettest month (4.0") and February the driest (1.3").