Allendale, IL
Full City Profile · Illinois · Wabash County County
3.4
/5.0
B
Good
491
Population
1,584/sq mi density
$70,500
Median Income
$37,405 per capita
$83,500
Home Value
$148,175 Zillow
$642
Median Rent
24.2% income on rent
56°F
Avg Temperature
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.1 / 5.0
$70,500 median income, 21.5% unemployment
A+
Affordability
5.0 / 5.0
$83,500 home value, $642/mo rent
C
Education
2.0 / 5.0
13.0% bachelor's degree or higher
Allendale enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 33°F in January while summers reach 78°F in July. Annual precipitation totals 48.7 inches. The area receives 8.9 inches of snow annually.
Temperature
33°F Jan (0°C)
78°F Jul (26°C)
| Annual Average | 56.4°F |
| 4% above US avg | |
| January Average | 33°F (0°C) |
| July Average | 78°F (26°C) |
Geography
| Elevation | 479 ft (146 m) |
| Area | 0.1 sq mi (0.3 km²) |
| Population Density | 1,584/sq mi |
| Coordinates | 38.5276°N, 87.7103°W |
| Timezone | America/Chicago |
| County | Wabash County County |
| Nearest Airport | Lawrenceville-Vincennes International (LWV) 17 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 24.8 / 100 |
| Social Vulnerability | 52.6 / 100 |
| Community Resilience | 56.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 3.6 in | Coldest |
| February | 36°F (2°C) | 3.1 in | Driest |
| March | 45°F (7°C) | 4.1 in | |
| April | 57°F (14°C) | 5.1 in | |
| May | 67°F (19°C) | 5.8 in | Wettest |
| June | 75°F (24°C) | 4.7 in | |
| July | 78°F (26°C) | 4.5 in | Warmest |
| August | 77°F (25°C) | 3.2 in | |
| September | 70°F (21°C) | 3.5 in | |
| October | 58°F (14°C) | 3.8 in | |
| November | 46°F (8°C) | 3.9 in | |
| December | 36°F (2°C) | 3.5 in |
Allendale has a seasonal temperature swing of 46°F / from 33°F in January to 78°F in July. Total annual precipitation is 48.7 inches, with May being the wettest month (5.8") and February the driest (3.1").