Winchester, IL
Full City Profile · Illinois · Scott County County
3.6
/5.0
B+
Good
1,543
Population
1,365/sq mi density
$54,286
Median Income
$31,086 per capita
$96,000
Home Value
$98,242 Zillow
$627
Median Rent
18.5% income on rent
53°F
Avg Temperature
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.0 / 5.0
$54,286 median income, 4.9% unemployment
A+
Affordability
5.0 / 5.0
$96,000 home value, $627/mo rent
C+
Education
2.7 / 5.0
20.7% bachelor's degree or higher
Winchester experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 27°F in January while summers reach 76°F in July. Annual precipitation totals 40.4 inches. The area receives 18.2 inches of snow annually.
Temperature
27°F Jan (-3°C)
76°F Jul (24°C)
| Annual Average | 52.9°F |
| 2% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 543 ft (166 m) |
| Area | 1.1 sq mi (2.9 km²) |
| Population Density | 1,365/sq mi |
| Coordinates | 39.6298°N, 90.4560°W |
| Timezone | America/Chicago |
| County | Scott County County |
| Nearest Airport | Quincy Regional-Baldwin Field (UIN) 45 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 2.8 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 82.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 2.3 in | Coldest |
| February | 31°F (-0°C) | 2.1 in | Driest |
| March | 42°F (5°C) | 3.1 in | |
| April | 53°F (12°C) | 4.4 in | |
| May | 64°F (18°C) | 4.8 in | |
| June | 73°F (23°C) | 5.0 in | Wettest |
| July | 76°F (24°C) | 4.0 in | Warmest |
| August | 75°F (24°C) | 3.5 in | |
| September | 67°F (19°C) | 3.0 in | |
| October | 55°F (13°C) | 3.1 in | |
| November | 42°F (6°C) | 2.8 in | |
| December | 32°F (0°C) | 2.4 in |
Winchester has a seasonal temperature swing of 49°F / from 27°F in January to 76°F in July. Total annual precipitation is 40.4 inches, with June being the wettest month (5.0") and February the driest (2.1").