All Countries
Brighton, IL
Full City Profile · Illinois · Jersey County County
3.2
/5.0
B
Good
2,536
Population
1,321/sq mi density
$74,327
Median Income
$32,511 per capita
$123,000
Home Value
$209,388 Zillow
$955
Median Rent
51.0% income on rent
53°F
Avg Temperature
293 sunny days/yr
47
Violent Crime/100K
421 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$74,327 median income, 1.8% unemployment
A+
Affordability
5.0 / 5.0
$123,000 home value, $955/mo rent
F
Safety
1.0 / 5.0
47 violent crimes/100K
C
Education
2.3 / 5.0
16.4% bachelor's degree or higher
Brighton experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 28°F in January while summers reach 76°F in July. The area gets 293 sunny days per year. Annual precipitation totals 42.2 inches. The area receives 12.5 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
28°F Jan (-2°C)
76°F Jul (25°C)
| Annual Average | 53.4°F |
| 1% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 661 ft (201 m) |
| Area | 1.9 sq mi (4.9 km²) |
| Population Density | 1,321/sq mi |
| Coordinates | 39.0409°N, 90.1400°W |
| Timezone | America/Chicago |
| County | Jersey County County |
| Nearest Airport | St Louis Regional (ALN) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0508 ppm |
| PM2.5 (Fine Particles) | 7.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 18.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 82.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 1.8 in | Coldest, Driest |
| February | 32°F (-0°C) | 2.0 in | |
| March | 43°F (6°C) | 3.4 in | |
| April | 54°F (12°C) | 3.8 in | |
| May | 64°F (18°C) | 4.3 in | Wettest |
| June | 72°F (22°C) | 3.6 in | |
| July | 76°F (25°C) | 3.8 in | Warmest |
| August | 75°F (24°C) | 3.4 in | |
| September | 67°F (20°C) | 3.4 in | |
| October | 56°F (13°C) | 2.8 in | |
| November | 43°F (6°C) | 3.3 in | |
| December | 32°F (0°C) | 3.0 in |
Brighton has a seasonal temperature swing of 48°F / from 28°F in January to 76°F in July. Total annual precipitation is 38.4 inches, with May being the wettest month (4.3") and January the driest (1.8").