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Savanna, IL
Full City Profile · Illinois · Jo Daviess County County
2.9
/5.0
C+
Fair
2,851
Population
1,088/sq mi density
$46,094
Median Income
$32,362 per capita
$75,000
Home Value
$90,340 Zillow
$777
Median Rent
28.1% income on rent
48°F
Avg Temperature
260 sunny days/yr
904
Violent Crime/100K
2,566 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$46,094 median income, 2.9% unemployment
A+
Affordability
5.0 / 5.0
$75,000 home value, $777/mo rent
F
Safety
1.0 / 5.0
904 violent crimes/100K (138% above avg)
C
Education
2.3 / 5.0
16.3% bachelor's degree or higher
Savanna experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 72°F in July. The area gets 260 sunny days per year. Annual precipitation totals 39.4 inches. The area receives 30.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
19°F Jan (-7°C)
72°F Jul (22°C)
| Annual Average | 47.5°F |
| 12% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 708 ft (216 m) |
| Area | 2.7 sq mi (7.0 km²) |
| Population Density | 1,088/sq mi |
| Coordinates | 42.0938°N, 90.1391°W |
| Timezone | America/Chicago |
| County | Jo Daviess County County |
| Nearest Airport | Dubuque Regional (DBQ) 36 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0465 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 51.3 / 100 |
| Social Vulnerability | 48.8 / 100 |
| Community Resilience | 59.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.3 in | Coldest, Driest |
| February | 24°F (-5°C) | 1.4 in | |
| March | 36°F (2°C) | 2.6 in | |
| April | 48°F (9°C) | 3.5 in | |
| May | 60°F (15°C) | 4.1 in | |
| June | 69°F (20°C) | 4.6 in | Wettest |
| July | 72°F (22°C) | 3.7 in | Warmest |
| August | 71°F (21°C) | 4.4 in | |
| September | 63°F (17°C) | 3.7 in | |
| October | 51°F (11°C) | 2.7 in | |
| November | 37°F (3°C) | 2.6 in | |
| December | 24°F (-4°C) | 1.9 in |
Savanna has a seasonal temperature swing of 53°F / from 19°F in January to 72°F in July. Total annual precipitation is 36.6 inches, with June being the wettest month (4.6") and January the driest (1.3").