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Royal, IL
Full City Profile · Illinois · Vermilion County County
4.3
/5.0
A
Great
313
Population
1,739/sq mi density
$93,500
Median Income
$50,216 per capita
$144,600
Home Value
$214,423 Zillow
$1,109
Median Rent
14.2% income on rent
52°F
Avg Temperature
275 sunny days/yr
A
Overall
4.3 / 5.0
Strong
A+
Economy
4.9 / 5.0
$93,500 median income, 1.2% unemployment
A+
Affordability
5.0 / 5.0
$144,600 home value, $1,109/mo rent
C+
Education
2.9 / 5.0
24.1% bachelor's degree or higher
Royal experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 26°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 41.2 inches. The area receives 25.0 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
26°F Jan (-3°C)
74°F Jul (24°C)
| Annual Average | 52.2°F |
| 3% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 684 ft (208 m) |
| Area | 0.1 sq mi (0.2 km²) |
| Population Density | 1,739/sq mi |
| Coordinates | 40.1931°N, 87.9719°W |
| Timezone | America/Chicago |
| County | Vermilion County County |
| Nearest Airport | Vermilion Regional (DNV) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.8 / 100 |
| Social Vulnerability | 70.2 / 100 |
| Community Resilience | 87.0 / 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 High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 1.8 in | Coldest, Driest |
| February | 28°F (-2°C) | 1.8 in | |
| March | 40°F (4°C) | 3.1 in | |
| April | 51°F (10°C) | 3.8 in | |
| May | 62°F (17°C) | 4.3 in | |
| June | 71°F (22°C) | 4.1 in | |
| July | 74°F (24°C) | 4.3 in | Warmest, Wettest |
| August | 72°F (22°C) | 3.9 in | |
| September | 66°F (19°C) | 3.2 in | |
| October | 54°F (12°C) | 2.9 in | |
| November | 41°F (5°C) | 3.2 in | |
| December | 30°F (-1°C) | 2.7 in |
Royal has a seasonal temperature swing of 48°F / from 26°F in January to 74°F in July. Total annual precipitation is 39.0 inches, with July being the wettest month (4.3") and January the driest (1.8").