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London Mills, IL
Full City Profile · Illinois · Knox County County
2.7
/5.0
C+
Fair
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
275 sunny days/yr
400
Violent Crime/100K
3,282 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$52,656 median income, 5.8% unemployment
A+
Affordability
5.0 / 5.0
$54,800 home value, $1,013/mo rent
F
Safety
1.0 / 5.0
400 violent crimes/100K (5% above avg)
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. The area gets 275 sunny days per year. Annual precipitation totals 37.6 inches. The area receives 24.0 inches of snow annually. Air quality is rated Good with a median AQI of 43.
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) |
| Sunny Days | 275 days/yr |
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
| AQI Median | 43.0 |
| Rating | Good |
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) | 1.4 in | Coldest |
| February | 28°F (-2°C) | 1.3 in | Driest |
| March | 39°F (4°C) | 2.9 in | |
| April | 51°F (11°C) | 3.8 in | |
| May | 62°F (17°C) | 3.8 in | |
| June | 71°F (22°C) | 4.1 in | |
| July | 73°F (23°C) | 4.3 in | Warmest, Wettest |
| August | 73°F (23°C) | 3.6 in | |
| September | 65°F (19°C) | 3.8 in | |
| October | 54°F (12°C) | 3.0 in | |
| November | 40°F (4°C) | 2.6 in | |
| December | 28°F (-2°C) | 2.2 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 36.8 inches, with July being the wettest month (4.3") and February the driest (1.3").