North Henderson, IL
Full City Profile · Illinois · Mercer County County
3.9
/5.0
B+
Good
204
Population
887/sq mi density
$71,563
Median Income
$41,626 per capita
$75,000
Home Value
$174,318 Zillow
50°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$71,563 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$75,000 home value, /mo rent
C
Education
2.4 / 5.0
17.6% bachelor's degree or higher
North Henderson experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 22°F in January while summers reach 75°F in July. Annual precipitation totals 38.2 inches. The area receives 26.8 inches of snow annually.
Temperature
22°F Jan (-6°C)
75°F Jul (24°C)
| Annual Average | 50.2°F |
| 7% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 773 ft (236 m) |
| Area | 0.1 sq mi (0.2 km²) |
| Population Density | 887/sq mi |
| Coordinates | 41.0904°N, 90.4748°W |
| Timezone | America/Chicago |
| County | Mercer County County |
| Nearest Airport | Quad Cities International (MLI) 25 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 8.8 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 85.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.7 in | Coldest, Driest |
| February | 26°F (-3°C) | 1.8 in | |
| March | 38°F (3°C) | 2.4 in | |
| April | 51°F (10°C) | 3.9 in | |
| May | 62°F (17°C) | 5.2 in | Wettest |
| June | 72°F (22°C) | 4.7 in | |
| July | 75°F (24°C) | 4.0 in | Warmest |
| August | 73°F (23°C) | 3.8 in | |
| September | 66°F (19°C) | 3.8 in | |
| October | 53°F (12°C) | 2.9 in | |
| November | 39°F (4°C) | 2.2 in | |
| December | 28°F (-2°C) | 1.9 in |
North Henderson has a seasonal temperature swing of 53°F / from 22°F in January to 75°F in July. Total annual precipitation is 38.2 inches, with May being the wettest month (5.2") and January the driest (1.7").