St. Donatus, IA
Full City Profile · Iowa · Jackson County County
3.0
/5.0
B
Good
131
Population
354/sq mi density
$41,813
Median Income
$27,417 per capita
$207,400
Home Value
$195,611 Zillow
$945
Median Rent
51.0% income on rent
47°F
Avg Temperature
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$41,813 median income, 0.0% unemployment
B+
Affordability
3.9 / 5.0
$207,400 home value, $945/mo rent
D
Education
1.6 / 5.0
7.8% bachelor's degree or higher
St. Donatus experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 19°F in January while summers reach 72°F in July. Annual precipitation totals 38.2 inches. The area receives 42.5 inches of snow annually.
Temperature
19°F Jan (-7°C)
72°F Jul (22°C)
| Annual Average | 47.2°F |
| 13% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 677 ft (206 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 354/sq mi |
| Coordinates | 42.3624°N, 90.5422°W |
| Timezone | America/Chicago |
| County | Jackson County County |
| Nearest Airport | Dubuque Regional (DBQ) 9 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 36.1 / 100 |
| Social Vulnerability | 15.9 / 100 |
| Community Resilience | 75.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.3 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.6 in | |
| March | 35°F (2°C) | 2.3 in | |
| April | 47°F (9°C) | 4.1 in | |
| May | 59°F (15°C) | 4.3 in | |
| June | 69°F (20°C) | 5.2 in | Wettest |
| July | 72°F (22°C) | 4.8 in | Warmest |
| August | 70°F (21°C) | 4.0 in | |
| September | 62°F (17°C) | 3.8 in | |
| October | 50°F (10°C) | 2.9 in | |
| November | 36°F (2°C) | 2.2 in | |
| December | 25°F (-4°C) | 1.8 in |
St. Donatus has a seasonal temperature swing of 53°F / from 19°F in January to 72°F in July. Total annual precipitation is 38.2 inches, with June being the wettest month (5.2") and January the driest (1.3").