Forsyth, IL
Full City Profile · Illinois · Macon County County
4.8
/5.0
A+
Excellent
3,656
Population
1,179/sq mi density
$113,456
Median Income
$61,549 per capita
$289,800
Home Value
$311,434 Zillow
$1,207
Median Rent
23.3% income on rent
53°F
Avg Temperature
A+
Overall
4.8 / 5.0
Strong
A+
Economy
4.5 / 5.0
$113,456 median income, 4.8% unemployment
A+
Affordability
5.0 / 5.0
$289,800 home value, $1,207/mo rent
A+
Education
5.0 / 5.0
58.7% bachelor's degree or higher
Forsyth 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. Annual precipitation totals 36.4 inches. The area receives 13.6 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
27°F Jan (-3°C)
76°F Jul (24°C)
| Annual Average | 53.1°F |
| 2% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 659 ft (201 m) |
| Area | 3.1 sq mi (8.0 km²) |
| Population Density | 1,179/sq mi |
| Coordinates | 39.9261°N, 88.9641°W |
| Timezone | America/Chicago |
| County | Macon County County |
| Nearest Airport | Central Il Regional/Bloomington-Normal (BMI) 38 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
| Good Days % | 65.0% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0498 ppm |
| SO₂ (Sulfur Dioxide) | 2.66 ppb |
| PM2.5 (Fine Particles) | 9.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.3 / 100 |
| Social Vulnerability | 50.8 / 100 |
| Community Resilience | 91.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 2.0 in | Coldest |
| February | 32°F (-0°C) | 1.8 in | Driest |
| March | 42°F (6°C) | 2.5 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 | 76°F (24°C) | 3.3 in | Warmest |
| August | 74°F (23°C) | 3.0 in | |
| September | 67°F (19°C) | 3.0 in | |
| October | 55°F (13°C) | 3.2 in | |
| November | 43°F (6°C) | 3.0 in | |
| December | 32°F (0°C) | 2.1 in |
Forsyth has a seasonal temperature swing of 48°F / from 27°F in January to 76°F in July. Total annual precipitation is 36.4 inches, with May being the wettest month (4.4") and February the driest (1.8").