Coggon, IA
Full City Profile · Iowa · Linn County County
4.4
/5.0
A
Great
803
Population
1,131/sq mi density
$76,500
Median Income
$38,575 per capita
$146,000
Home Value
$252,020 Zillow
$700
Median Rent
20.0% income on rent
47°F
Avg Temperature
A
Overall
4.4 / 5.0
Strong
A+
Economy
4.5 / 5.0
$76,500 median income, 1.3% unemployment
A+
Affordability
5.0 / 5.0
$146,000 home value, $700/mo rent
B+
Education
3.6 / 5.0
32.4% bachelor's degree or higher
Coggon experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 18°F in January while summers reach 72°F in July. Annual precipitation totals 39.1 inches. The area receives 34.7 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
18°F Jan (-8°C)
72°F Jul (22°C)
| Annual Average | 46.5°F |
| 14% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 949 ft (289 m) |
| Area | 0.6 sq mi (1.7 km²) |
| Population Density | 1,131/sq mi |
| Coordinates | 42.2778°N, 91.5299°W |
| Timezone | America/Chicago |
| County | Linn County County |
| Nearest Airport | Monticello Regional (MXO) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 64.2% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0481 ppm |
| SO₂ (Sulfur Dioxide) | 0.46 ppb |
| PM2.5 (Fine Particles) | 11.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.7 / 100 |
| Social Vulnerability | 15.4 / 100 |
| Community Resilience | 98.7 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Very High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.2 in | Coldest, Driest |
| February | 22°F (-6°C) | 1.3 in | |
| March | 34°F (1°C) | 2.0 in | |
| April | 46°F (8°C) | 3.9 in | |
| May | 58°F (14°C) | 4.8 in | |
| June | 68°F (20°C) | 5.9 in | Wettest |
| July | 72°F (22°C) | 5.0 in | Warmest |
| August | 70°F (21°C) | 4.3 in | |
| September | 62°F (17°C) | 3.9 in | |
| October | 49°F (10°C) | 3.1 in | |
| November | 36°F (2°C) | 2.2 in | |
| December | 24°F (-5°C) | 1.6 in |
Coggon has a seasonal temperature swing of 54°F / from 18°F in January to 72°F in July. Total annual precipitation is 39.2 inches, with June being the wettest month (5.9") and January the driest (1.2").