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Naples, IL
Full City Profile · Illinois · Scott County County
3.0
/5.0
B
Good
99
Population
162/sq mi density
$54,300
Home Value
$61,053 Zillow
53°F
Avg Temperature
302 sunny days/yr
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Safety
2.5 / 5.0
0 violent crimes/100K
B+
Education
3.6 / 5.0
32.1% bachelor's degree or higher
Naples 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. The area gets 302 sunny days per year. Annual precipitation totals 39.1 inches. The area receives 20.9 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
27°F Jan (-3°C)
76°F Jul (25°C)
| Annual Average | 53.3°F |
| 1% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 436 ft (133 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 162/sq mi |
| Coordinates | 39.7535°N, 90.6069°W |
| Timezone | America/Chicago |
| County | Scott County County |
| Nearest Airport | Quincy Regional-Baldwin Field (UIN) 34 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
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) | 1.5 in | Coldest, Driest |
| February | 31°F (-1°C) | 1.6 in | |
| March | 42°F (6°C) | 3.1 in | |
| April | 54°F (12°C) | 3.8 in | |
| May | 64°F (18°C) | 4.5 in | Wettest |
| June | 73°F (23°C) | 3.7 in | |
| July | 76°F (25°C) | 3.8 in | Warmest |
| August | 75°F (24°C) | 3.3 in | |
| September | 67°F (20°C) | 3.5 in | |
| October | 56°F (13°C) | 2.8 in | |
| November | 42°F (6°C) | 3.2 in | |
| December | 31°F (-1°C) | 2.5 in |
Naples has a seasonal temperature swing of 49°F / from 27°F in January to 76°F in July. Total annual precipitation is 37.2 inches, with May being the wettest month (4.5") and January the driest (1.5").