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Plainfield, IL
Full City Profile · Illinois · Kendall County County
4.0
/5.0
A
Great
45,705
Population
1,765/sq mi density
$142,265
Median Income
$53,675 per capita
$398,000
Home Value
$417,359 Zillow
$1,889
Median Rent
27.7% income on rent
51°F
Avg Temperature
275 sunny days/yr
123
Violent Crime/100K
564 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.9 / 5.0
$142,265 median income, 2.7% unemployment
A+
Affordability
5.0 / 5.0
$398,000 home value, $1,889/mo rent
F
Safety
1.0 / 5.0
123 violent crimes/100K
A+
Education
5.0 / 5.0
54.9% bachelor's degree or higher
Plainfield experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 24°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 41.1 inches. The area receives 33.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
24°F Jan (-5°C)
75°F Jul (24°C)
| Annual Average | 50.9°F |
| 6% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 640 ft (195 m) |
| Area | 9.8 sq mi (25.4 km²) |
| Population Density | 1,765/sq mi |
| Coordinates | 41.6303°N, 88.2453°W |
| Timezone | America/Chicago |
| County | Kendall County County |
| Nearest Airport | Joliet Regional (JOT) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 80.3 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 96.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 113 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 1.5 in | Coldest |
| February | 27°F (-3°C) | 1.4 in | Driest |
| March | 38°F (3°C) | 2.7 in | |
| April | 49°F (10°C) | 3.9 in | |
| May | 61°F (16°C) | 3.9 in | |
| June | 70°F (21°C) | 4.1 in | Wettest |
| July | 75°F (24°C) | 3.9 in | Warmest |
| August | 72°F (22°C) | 3.8 in | |
| September | 65°F (18°C) | 3.7 in | |
| October | 53°F (12°C) | 2.6 in | |
| November | 40°F (4°C) | 3.0 in | |
| December | 27°F (-3°C) | 2.4 in |
Plainfield has a seasonal temperature swing of 51°F / from 24°F in January to 75°F in July. Total annual precipitation is 37.0 inches, with June being the wettest month (4.1") and February the driest (1.4").