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Tolono, IL
Full City Profile · Illinois · Douglas County County
3.2
/5.0
B
Good
3,546
Population
1,721/sq mi density
$79,333
Median Income
$38,292 per capita
$207,200
Home Value
$241,704 Zillow
$1,002
Median Rent
24.7% income on rent
52°F
Avg Temperature
293 sunny days/yr
58
Violent Crime/100K
580 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$79,333 median income, 7.7% unemployment
A+
Affordability
5.0 / 5.0
$207,200 home value, $1,002/mo rent
F
Safety
1.0 / 5.0
58 violent crimes/100K
B
Education
3.1 / 5.0
25.7% bachelor's degree or higher
Tolono experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 26°F in January while summers reach 75°F in July. The area gets 293 sunny days per year. Annual precipitation totals 40.6 inches. The area receives 16.9 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
26°F Jan (-3°C)
75°F Jul (24°C)
| Annual Average | 52.4°F |
| 3% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 735 ft (224 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 1,721/sq mi |
| Coordinates | 39.9913°N, 88.2625°W |
| Timezone | America/Chicago |
| County | Douglas County County |
| Nearest Airport | Vermilion Regional (DNV) 38 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 62.1 / 100 |
| Social Vulnerability | 57.9 / 100 |
| Community Resilience | 63.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 1.9 in | Coldest, Driest |
| February | 29°F (-2°C) | 2.0 in | |
| March | 41°F (5°C) | 3.2 in | |
| April | 52°F (11°C) | 3.9 in | |
| May | 63°F (17°C) | 4.2 in | |
| June | 72°F (22°C) | 3.9 in | |
| July | 75°F (24°C) | 4.6 in | Warmest, Wettest |
| August | 73°F (23°C) | 3.9 in | |
| September | 67°F (19°C) | 3.3 in | |
| October | 55°F (13°C) | 2.8 in | |
| November | 42°F (6°C) | 3.4 in | |
| December | 31°F (-1°C) | 3.0 in |
Tolono has a seasonal temperature swing of 49°F / from 26°F in January to 75°F in July. Total annual precipitation is 40.1 inches, with July being the wettest month (4.6") and January the driest (1.9").