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Delavan, IL
Full City Profile · Illinois · Tazewell County County
3.1
/5.0
B
Good
1,600
Population
1,111/sq mi density
$69,038
Median Income
$29,467 per capita
$118,400
Home Value
$124,845 Zillow
$775
Median Rent
19.5% income on rent
52°F
Avg Temperature
275 sunny days/yr
125
Violent Crime/100K
2,305 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$69,038 median income, 4.4% unemployment
A+
Affordability
5.0 / 5.0
$118,400 home value, $775/mo rent
F
Safety
1.0 / 5.0
125 violent crimes/100K
C
Education
2.3 / 5.0
16.5% bachelor's degree or higher
Delavan 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 39.3 inches. The area receives 12.9 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 | 51.7°F |
| 4% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 604 ft (184 m) |
| Area | 1.4 sq mi (3.7 km²) |
| Population Density | 1,111/sq mi |
| Coordinates | 40.3710°N, 89.5461°W |
| Timezone | America/Chicago |
| County | Tazewell County County |
| Nearest Airport | General Downing - Peoria International (PIA) 22 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) | 1.6 in | Coldest, Driest |
| February | 29°F (-2°C) | 1.6 in | |
| March | 40°F (5°C) | 3.0 in | |
| April | 52°F (11°C) | 3.7 in | |
| May | 63°F (17°C) | 4.1 in | Wettest |
| June | 72°F (22°C) | 3.9 in | |
| July | 75°F (24°C) | 3.9 in | Warmest |
| August | 73°F (23°C) | 3.4 in | |
| September | 66°F (19°C) | 3.6 in | |
| October | 55°F (13°C) | 2.8 in | |
| November | 41°F (5°C) | 2.8 in | |
| December | 29°F (-2°C) | 2.6 in |
Delavan has a seasonal temperature swing of 50°F / from 25°F in January to 75°F in July. Total annual precipitation is 37.0 inches, with May being the wettest month (4.1") and January the driest (1.6").