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Dekorra, WI
Full City Profile · Wisconsin · Columbia County County
3.5
/5.0
B+
Good
137
Population
113/sq mi density
$97,250
Median Income
$94,701 per capita
$239,600
Home Value
$390,764 Zillow
46°F
Avg Temperature
260 sunny days/yr
40
Violent Crime/100K
837 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$97,250 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$239,600 home value, /mo rent
F
Safety
1.0 / 5.0
40 violent crimes/100K
B
Education
3.1 / 5.0
26.5% bachelor's degree or higher
Dekorra experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 18°F in January while summers reach 71°F in July. The area gets 260 sunny days per year. Annual precipitation totals 35.5 inches. The area receives 42.6 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
18°F Jan (-8°C)
71°F Jul (22°C)
| Annual Average | 46.0°F |
| 15% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 866 ft (264 m) |
| Area | 1.2 sq mi (3.1 km²) |
| Population Density | 113/sq mi |
| Coordinates | 43.4539°N, 89.4603°W |
| Timezone | America/Chicago |
| County | Columbia County County |
| Nearest Airport | Dane County Regional/Truax Field (MSN) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0501 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 81.4 / 100 |
| Social Vulnerability | 24.0 / 100 |
| Community Resilience | 91.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| 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 |
| February | 21°F (-6°C) | 1.1 in | Driest |
| March | 32°F (0°C) | 2.2 in | |
| April | 45°F (7°C) | 3.3 in | |
| May | 58°F (14°C) | 3.5 in | |
| June | 67°F (19°C) | 4.0 in | |
| July | 71°F (22°C) | 4.0 in | Warmest |
| August | 69°F (20°C) | 4.1 in | Wettest |
| September | 61°F (16°C) | 3.7 in | |
| October | 49°F (9°C) | 2.4 in | |
| November | 35°F (2°C) | 2.3 in | |
| December | 22°F (-6°C) | 1.5 in |
Dekorra has a seasonal temperature swing of 53°F / from 18°F in January to 71°F in July. Total annual precipitation is 33.3 inches, with August being the wettest month (4.1") and February the driest (1.1").