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Rio, WI
Full City Profile · Wisconsin · Columbia County County
3.9
/5.0
B+
Good
1,068
Population
854/sq mi density
$68,304
Median Income
$35,486 per capita
$174,800
Home Value
$243,944 Zillow
$789
Median Rent
18.1% income on rent
46°F
Avg Temperature
260 sunny days/yr
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.0 / 5.0
$68,304 median income, 1.4% unemployment
A+
Affordability
5.0 / 5.0
$174,800 home value, $789/mo rent
C+
Education
2.6 / 5.0
20.2% bachelor's degree or higher
Rio 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 | 927 ft (283 m) |
| Area | 1.2 sq mi (3.2 km²) |
| Population Density | 854/sq mi |
| Coordinates | 43.4522°N, 89.2416°W |
| Timezone | America/Chicago |
| County | Columbia County County |
| Nearest Airport | Dane County Regional/Truax Field (MSN) 22 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, Driest |
| February | 21°F (-6°C) | 1.2 in | |
| March | 32°F (0°C) | 2.2 in | |
| April | 46°F (8°C) | 3.3 in | |
| May | 58°F (14°C) | 3.5 in | |
| June | 67°F (19°C) | 3.9 in | |
| July | 71°F (22°C) | 3.9 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) | 1.6 in |
Rio 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 January the driest (1.2").