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Defiance, IA
Full City Profile · Iowa · Shelby County County
2.7
/5.0
C+
Fair
207
Population
559/sq mi density
$51,458
Median Income
$36,328 per capita
$84,300
Home Value
$199,681 Zillow
50°F
Avg Temperature
275 sunny days/yr
98
Violent Crime/100K
1,562 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$51,458 median income, 1.1% unemployment
A+
Affordability
5.0 / 5.0
$84,300 home value, /mo rent
F
Safety
1.0 / 5.0
98 violent crimes/100K
D
Education
1.6 / 5.0
7.3% bachelor's degree or higher
Defiance experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 21°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 34.3 inches. The area receives 30.5 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
21°F Jan (-6°C)
75°F Jul (24°C)
| Annual Average | 49.5°F |
| 8% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,269 ft (387 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 559/sq mi |
| Coordinates | 41.8250°N, 95.3401°W |
| Timezone | America/Chicago |
| County | Shelby County County |
| Nearest Airport | Eppley Airfield (OMA) 46 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 22.8 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 87.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 0.7 in | Coldest, Driest |
| February | 25°F (-4°C) | 0.8 in | |
| March | 37°F (3°C) | 2.1 in | |
| April | 50°F (10°C) | 3.0 in | |
| May | 61°F (16°C) | 4.3 in | |
| June | 71°F (21°C) | 4.5 in | Wettest |
| July | 75°F (24°C) | 3.7 in | Warmest |
| August | 72°F (22°C) | 3.7 in | |
| September | 64°F (18°C) | 4.0 in | |
| October | 52°F (11°C) | 2.6 in | |
| November | 36°F (2°C) | 1.5 in | |
| December | 24°F (-5°C) | 1.0 in |
Defiance has a seasonal temperature swing of 54°F / from 21°F in January to 75°F in July. Total annual precipitation is 31.9 inches, with June being the wettest month (4.5") and January the driest (0.7").