Tolono, IL
Full City Profile · Illinois · Douglas County County
3.5
/5.0
B+
Good
3,546
Population
1,721/sq mi density
$79,333
Median Income
$38,292 per capita
$207,200
Home Value
$253,556 Zillow
$1,002
Median Rent
24.7% income on rent
53°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$79,333 median income, 10.0% unemployment
A+
Affordability
5.0 / 5.0
$207,200 home value, $1,002/mo rent
C+
Safety
2.5 / 5.0
0 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 53°F (12°C). Winters average 26°F in January while summers reach 75°F in July. Annual precipitation totals 37.0 inches. The area receives 20.6 inches of snow annually.
Temperature
26°F Jan (-3°C)
75°F Jul (24°C)
| Annual Average | 52.5°F |
| 3% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 75°F (24°C) |
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
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) | 2.1 in | Coldest |
| February | 30°F (-1°C) | 1.8 in | Driest |
| March | 41°F (5°C) | 2.6 in | |
| April | 53°F (12°C) | 3.7 in | |
| May | 64°F (18°C) | 4.4 in | Wettest |
| June | 73°F (23°C) | 4.4 in | |
| July | 75°F (24°C) | 3.9 in | Warmest |
| August | 73°F (23°C) | 3.1 in | |
| September | 67°F (19°C) | 3.1 in | |
| October | 55°F (13°C) | 3.0 in | |
| November | 42°F (5°C) | 2.9 in | |
| December | 31°F (-0°C) | 2.1 in |
Tolono has a seasonal temperature swing of 49°F / from 26°F in January to 75°F in July. Total annual precipitation is 37.0 inches, with May being the wettest month (4.4") and February the driest (1.8").