Tonica, IL
Full City Profile · Illinois · Putnam County County
4.0
/5.0
A
Great
732
Population
538/sq mi density
$80,795
Median Income
$35,112 per capita
$122,500
Home Value
$233,364 Zillow
$839
Median Rent
24.6% income on rent
50°F
Avg Temperature
A
Overall
4.0 / 5.0
Strong
A
Economy
4.2 / 5.0
$80,795 median income, 4.9% unemployment
A+
Affordability
5.0 / 5.0
$122,500 home value, $839/mo rent
C+
Education
2.9 / 5.0
23.8% bachelor's degree or higher
Tonica experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 22°F in January while summers reach 73°F in July. Annual precipitation totals 36.9 inches. The area receives 28.5 inches of snow annually.
Temperature
22°F Jan (-6°C)
73°F Jul (23°C)
| Annual Average | 49.6°F |
| 8% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 666 ft (203 m) |
| Area | 0.5 sq mi (1.4 km²) |
| Population Density | 538/sq mi |
| Coordinates | 41.2159°N, 89.0700°W |
| Timezone | America/Chicago |
| County | Putnam County County |
| Nearest Airport | Illinois Valley Regional-Walter A Duncan Field (VYS) 10 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 9.2 / 100 |
| Social Vulnerability | 34.8 / 100 |
| Community Resilience | 79.9 / 100 |
Hazard Breakdown
| Tornado | Relatively 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 Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.9 in | Coldest, Driest |
| February | 26°F (-3°C) | 1.9 in | |
| March | 37°F (3°C) | 2.4 in | |
| April | 49°F (10°C) | 3.5 in | |
| May | 61°F (16°C) | 4.5 in | Wettest |
| June | 70°F (21°C) | 4.1 in | |
| July | 73°F (23°C) | 3.8 in | Warmest |
| August | 72°F (22°C) | 3.5 in | |
| September | 65°F (18°C) | 3.2 in | |
| October | 53°F (11°C) | 3.4 in | |
| November | 39°F (4°C) | 2.7 in | |
| December | 28°F (-2°C) | 2.0 in |
Tonica has a seasonal temperature swing of 51°F / from 22°F in January to 73°F in July. Total annual precipitation is 36.9 inches, with May being the wettest month (4.5") and January the driest (1.9").