Blue Grass, IA
Full City Profile · Iowa · Rock Island County County
4.1
/5.0
A
Great
1,867
Population
591/sq mi density
$87,083
Median Income
$48,644 per capita
$202,400
Home Value
$359,978 Zillow
$1,158
Median Rent
27.7% income on rent
50°F
Avg Temperature
A
Overall
4.1 / 5.0
Strong
A
Economy
4.0 / 5.0
$87,083 median income, 5.3% unemployment
A+
Affordability
5.0 / 5.0
$202,400 home value, $1,158/mo rent
B
Education
3.4 / 5.0
30.2% bachelor's degree or higher
Blue Grass experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 22°F in January while summers reach 74°F in July. Annual precipitation totals 36.2 inches. The area receives 36.1 inches of snow annually.
Temperature
22°F Jan (-6°C)
74°F Jul (23°C)
| Annual Average | 49.9°F |
| 8% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 798 ft (243 m) |
| Area | 2.9 sq mi (7.5 km²) |
| Population Density | 591/sq mi |
| Coordinates | 41.5102°N, 90.7669°W |
| Timezone | America/Chicago |
| County | Rock Island County County |
| Nearest Airport | Quad Cities International (MLI) 14 miles away |
Precipitation & Snow
Air Quality
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 | 22°F (-6°C) | 1.1 in | Coldest, Driest |
| February | 26°F (-3°C) | 1.4 in | |
| March | 39°F (4°C) | 2.3 in | |
| April | 50°F (10°C) | 3.6 in | |
| May | 62°F (17°C) | 4.8 in | Wettest |
| June | 71°F (22°C) | 4.7 in | |
| July | 74°F (23°C) | 4.1 in | Warmest |
| August | 72°F (22°C) | 4.0 in | |
| September | 65°F (18°C) | 3.5 in | |
| October | 53°F (11°C) | 2.7 in | |
| November | 39°F (4°C) | 2.3 in | |
| December | 28°F (-2°C) | 1.6 in |
Blue Grass has a seasonal temperature swing of 52°F / from 22°F in January to 74°F in July. Total annual precipitation is 36.2 inches, with May being the wettest month (4.8") and January the driest (1.1").