London Mills, IL
Full City Profile · Illinois · Knox County County
3.0
/5.0
B
Good
356
Population
524/sq mi density
$52,656
Median Income
$38,484 per capita
$54,800
Home Value
$132,470 Zillow
$1,013
Median Rent
36.1% income on rent
49°F
Avg Temperature
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
C
Economy
2.3 / 5.0
$52,656 median income, 11.0% unemployment
A+
Affordability
5.0 / 5.0
$54,800 home value, $1,013/mo rent
D
Education
1.8 / 5.0
9.6% bachelor's degree or higher
London Mills experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 22°F in January while summers reach 73°F in July. Annual precipitation totals 37.6 inches. The area receives 24.0 inches of snow annually.
Temperature
22°F Jan (-6°C)
73°F Jul (23°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 543 ft (166 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 524/sq mi |
| Coordinates | 40.7106°N, 90.2662°W |
| Timezone | America/Chicago |
| County | Knox County County |
| Nearest Airport | General Downing - Peoria International (PIA) 30 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 57.2 / 100 |
| Social Vulnerability | 49.8 / 100 |
| Community Resilience | 66.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.8 in | Coldest, Driest |
| February | 26°F (-3°C) | 1.8 in | |
| March | 37°F (3°C) | 2.4 in | |
| April | 49°F (10°C) | 3.6 in | |
| May | 61°F (16°C) | 5.0 in | Wettest |
| June | 70°F (21°C) | 4.4 in | |
| July | 73°F (23°C) | 4.2 in | Warmest |
| August | 71°F (22°C) | 3.7 in | |
| September | 64°F (18°C) | 3.7 in | |
| October | 52°F (11°C) | 2.9 in | |
| November | 39°F (4°C) | 2.4 in | |
| December | 28°F (-2°C) | 1.9 in |
London Mills has a seasonal temperature swing of 51°F / from 22°F in January to 73°F in July. Total annual precipitation is 37.6 inches, with May being the wettest month (5.0") and January the driest (1.8").