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Walnut, IL
Full City Profile · Illinois · Bureau County County
3.2
/5.0
B
Good
1,402
Population
1,753/sq mi density
$62,019
Median Income
$30,333 per capita
$94,700
Home Value
$142,747 Zillow
$591
Median Rent
22.4% income on rent
49°F
Avg Temperature
275 sunny days/yr
146
Violent Crime/100K
1,024 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.2 / 5.0
$62,019 median income, 2.0% unemployment
A+
Affordability
5.0 / 5.0
$94,700 home value, $591/mo rent
F
Safety
1.0 / 5.0
146 violent crimes/100K
C+
Education
2.5 / 5.0
18.8% bachelor's degree or higher
Walnut experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 21°F in January while summers reach 73°F in July. The area gets 275 sunny days per year. Annual precipitation totals 36.8 inches. The area receives 35.9 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
21°F Jan (-6°C)
73°F Jul (23°C)
| Annual Average | 49.3°F |
| 9% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 709 ft (216 m) |
| Area | 0.3 sq mi (0.8 km²) |
| Population Density | 1,753/sq mi |
| Coordinates | 41.5571°N, 89.5913°W |
| Timezone | America/Chicago |
| County | Bureau County County |
| Nearest Airport | Illinois Valley Regional-Walter A Duncan Field (VYS) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 62.3 / 100 |
| Social Vulnerability | 41.7 / 100 |
| Community Resilience | 80.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 1.4 in | Coldest |
| February | 25°F (-4°C) | 1.3 in | Driest |
| March | 37°F (3°C) | 2.6 in | |
| April | 49°F (9°C) | 3.6 in | |
| May | 61°F (16°C) | 4.4 in | |
| June | 70°F (21°C) | 4.6 in | Wettest |
| July | 73°F (23°C) | 3.7 in | Warmest |
| August | 71°F (22°C) | 4.3 in | |
| September | 64°F (18°C) | 3.6 in | |
| October | 52°F (11°C) | 2.8 in | |
| November | 38°F (4°C) | 2.6 in | |
| December | 26°F (-4°C) | 2.1 in |
Walnut has a seasonal temperature swing of 52°F / from 21°F in January to 73°F in July. Total annual precipitation is 36.9 inches, with June being the wettest month (4.6") and February the driest (1.3").