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Prairie du Sac, WI
Full City Profile · Wisconsin · Sauk County County
3.7
/5.0
B+
Good
4,385
Population
2,204/sq mi density
$92,672
Median Income
$44,313 per capita
$319,200
Home Value
$410,692 Zillow
$1,138
Median Rent
25.7% income on rent
46°F
Avg Temperature
260 sunny days/yr
74
Violent Crime/100K
2,840 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$92,672 median income, 1.0% unemployment
A+
Affordability
4.7 / 5.0
$319,200 home value, $1,138/mo rent
F
Safety
1.0 / 5.0
74 violent crimes/100K
A
Education
4.4 / 5.0
42.0% bachelor's degree or higher
Prairie du Sac experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 17°F in January while summers reach 71°F in July. The area gets 260 sunny days per year. Annual precipitation totals 36.5 inches. Air quality is rated Good with a median AQI of 38.
Temperature
17°F Jan (-8°C)
71°F Jul (22°C)
| Annual Average | 45.9°F |
| 15% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 792 ft (241 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 2,204/sq mi |
| Coordinates | 43.2939°N, 89.7352°W |
| Timezone | America/Chicago |
| County | Sauk 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) | 0.0488 ppm |
| PM2.5 (Fine Particles) | 9.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 72.1 / 100 |
| Social Vulnerability | 21.9 / 100 |
| Community Resilience | 82.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 1.1 in | Coldest |
| February | 21°F (-6°C) | 1.0 in | Driest |
| March | 33°F (0°C) | 2.1 in | |
| April | 45°F (7°C) | 2.8 in | |
| May | 58°F (14°C) | 3.2 in | |
| June | 67°F (19°C) | 3.8 in | |
| July | 71°F (22°C) | 3.8 in | Warmest |
| August | 69°F (20°C) | 4.0 in | Wettest |
| September | 61°F (16°C) | 3.8 in | |
| October | 49°F (10°C) | 2.3 in | |
| November | 35°F (2°C) | 2.0 in | |
| December | 22°F (-5°C) | 1.5 in |
Prairie du Sac has a seasonal temperature swing of 54°F / from 17°F in January to 71°F in July. Total annual precipitation is 31.5 inches, with August being the wettest month (4.0") and February the driest (1.0").