All Countries
Oak Grove, IL
Full City Profile · Illinois · Rock Island County County
2.7
/5.0
C+
Fair
335
Population
508/sq mi density
$41,912
Median Income
$34,086 per capita
$688
Median Rent
22.1% income on rent
51°F
Avg Temperature
275 sunny days/yr
175
Violent Crime/100K
2,729 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$41,912 median income, 3.6% unemployment
A+
Affordability
5.0 / 5.0
F
Safety
1.0 / 5.0
175 violent crimes/100K
D
Education
1.8 / 5.0
9.9% bachelor's degree or higher
Oak Grove experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 23°F in January while summers reach 76°F in July. The area gets 275 sunny days per year. Annual precipitation totals 38.3 inches. The area receives 36.1 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
23°F Jan (-5°C)
76°F Jul (24°C)
| Annual Average | 51.2°F |
| 5% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 680 ft (207 m) |
| Area | 0.3 sq mi (0.6 km²) |
| Population Density | 508/sq mi |
| Coordinates | 41.4119°N, 90.5742°W |
| Timezone | America/Chicago |
| County | Rock Island County County |
| Nearest Airport | Quad Cities International (MLI) 4 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0483 ppm |
| PM2.5 (Fine Particles) | 9.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 84.1 / 100 |
| Social Vulnerability | 60.2 / 100 |
| Community Resilience | 87.3 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| 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 High |
| 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 | 23°F (-5°C) | 1.4 in | Coldest |
| February | 27°F (-3°C) | 1.1 in | Driest |
| March | 38°F (3°C) | 2.6 in | |
| April | 50°F (10°C) | 3.7 in | |
| May | 61°F (16°C) | 3.9 in | |
| June | 71°F (22°C) | 4.3 in | |
| July | 76°F (24°C) | 4.6 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.0 in | |
| September | 65°F (18°C) | 3.8 in | |
| October | 53°F (12°C) | 2.7 in | |
| November | 39°F (4°C) | 2.4 in | |
| December | 26°F (-3°C) | 2.0 in |
Oak Grove has a seasonal temperature swing of 52°F / from 23°F in January to 76°F in July. Total annual precipitation is 36.5 inches, with July being the wettest month (4.6") and February the driest (1.1").