Westfield, IL
Full City Profile · Illinois · Clark County County
3.5
/5.0
B+
Good
418
Population
427/sq mi density
$62,986
Median Income
$31,271 per capita
$72,000
Home Value
$108,073 Zillow
$910
Median Rent
20.8% income on rent
55°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$62,986 median income, 8.3% unemployment
A+
Affordability
5.0 / 5.0
$72,000 home value, $910/mo rent
C
Education
2.2 / 5.0
15.5% bachelor's degree or higher
Westfield experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 29°F in January while summers reach 77°F in July. Annual precipitation totals 43.8 inches. The area receives 19.0 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
29°F Jan (-1°C)
77°F Jul (25°C)
| Annual Average | 55.0°F |
| 2% above US avg | |
| January Average | 29°F (-1°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 766 ft (233 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 427/sq mi |
| Coordinates | 39.4555°N, 87.9964°W |
| Timezone | America/Chicago |
| County | Clark County County |
| Nearest Airport | Terre Haute Regional (HUF) 37 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
| Good Days % | 91.5% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0460 ppm |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 27.3 / 100 |
| Social Vulnerability | 42.7 / 100 |
| Community Resilience | 67.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively 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 | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-1°C) | 2.5 in | Coldest, Driest |
| February | 34°F (1°C) | 2.7 in | |
| March | 44°F (7°C) | 3.1 in | |
| April | 56°F (13°C) | 5.1 in | Wettest |
| May | 66°F (19°C) | 4.5 in | |
| June | 74°F (23°C) | 4.8 in | |
| July | 77°F (25°C) | 4.4 in | Warmest |
| August | 76°F (24°C) | 2.9 in | |
| September | 69°F (21°C) | 3.2 in | |
| October | 57°F (14°C) | 3.9 in | |
| November | 45°F (7°C) | 3.7 in | |
| December | 34°F (1°C) | 2.8 in |
Westfield has a seasonal temperature swing of 48°F / from 29°F in January to 77°F in July. Total annual precipitation is 43.8 inches, with April being the wettest month (5.1") and January the driest (2.5").