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Williamsfield, IL
Full City Profile · Illinois · Knox County County
3.3
/5.0
B
Good
500
Population
407/sq mi density
$75,208
Median Income
$36,686 per capita
$98,100
Home Value
$143,528 Zillow
$625
Median Rent
11.0% income on rent
50°F
Avg Temperature
275 sunny days/yr
47
Violent Crime/100K
425 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$75,208 median income, 1.7% unemployment
A+
Affordability
5.0 / 5.0
$98,100 home value, $625/mo rent
F
Safety
1.0 / 5.0
47 violent crimes/100K
C+
Education
2.6 / 5.0
20.1% bachelor's degree or higher
Williamsfield experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 23°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 40.5 inches. The area receives 25.4 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
23°F Jan (-5°C)
74°F Jul (23°C)
| Annual Average | 50.4°F |
| 7% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 703 ft (214 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 407/sq mi |
| Coordinates | 40.9264°N, 90.0182°W |
| Timezone | America/Chicago |
| County | Knox County County |
| Nearest Airport | General Downing - Peoria International (PIA) 25 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 | 23°F (-5°C) | 1.5 in | Coldest |
| February | 27°F (-3°C) | 1.4 in | Driest |
| March | 39°F (4°C) | 2.9 in | |
| April | 50°F (10°C) | 3.9 in | |
| May | 61°F (16°C) | 3.9 in | |
| June | 71°F (21°C) | 4.2 in | Wettest |
| July | 74°F (23°C) | 4.1 in | Warmest |
| August | 73°F (23°C) | 3.8 in | |
| September | 65°F (18°C) | 3.8 in | |
| October | 53°F (12°C) | 2.9 in | |
| November | 40°F (4°C) | 2.7 in | |
| December | 27°F (-3°C) | 2.2 in |
Williamsfield has a seasonal temperature swing of 51°F / from 23°F in January to 74°F in July. Total annual precipitation is 37.2 inches, with June being the wettest month (4.2") and February the driest (1.4").