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Heritage Lake, IL
Full City Profile · Illinois · Tazewell County County
4.0
/5.0
A
Great
1,708
Population
1,512/sq mi density
$117,422
Median Income
$42,474 per capita
$210,600
Home Value
$245,762 Zillow
52°F
Avg Temperature
275 sunny days/yr
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.5 / 5.0
$117,422 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$210,600 home value, /mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A
Education
4.0 / 5.0
37.5% bachelor's degree or higher
Heritage Lake experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 25°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 37.5 inches. The area receives 22.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
25°F Jan (-4°C)
75°F Jul (24°C)
| Annual Average | 52.1°F |
| 4% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 705 ft (215 m) |
| Area | 1.3 sq mi (3.2 km²) |
| Population Density | 1,512/sq mi |
| Coordinates | 40.5466°N, 89.3296°W |
| Timezone | America/Chicago |
| County | Tazewell County County |
| Nearest Airport | General Downing - Peoria International (PIA) 21 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 84.2 / 100 |
| Social Vulnerability | 23.2 / 100 |
| Community Resilience | 94.5 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 1.7 in | Coldest |
| February | 28°F (-2°C) | 1.6 in | Driest |
| March | 39°F (4°C) | 3.1 in | |
| April | 51°F (10°C) | 3.8 in | |
| May | 62°F (16°C) | 4.2 in | Wettest |
| June | 71°F (22°C) | 4.0 in | |
| July | 75°F (24°C) | 3.9 in | Warmest |
| August | 73°F (23°C) | 3.4 in | |
| September | 65°F (19°C) | 3.9 in | |
| October | 54°F (12°C) | 2.8 in | |
| November | 40°F (5°C) | 2.9 in | |
| December | 28°F (-2°C) | 2.7 in |
Heritage Lake has a seasonal temperature swing of 50°F / from 25°F in January to 75°F in July. Total annual precipitation is 37.8 inches, with May being the wettest month (4.2") and February the driest (1.6").