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Alto, WI
Full City Profile · Wisconsin · Green Lake County County
3.2
/5.0
B
Good
119
Population
151/sq mi density
$83,125
Median Income
$50,187 per capita
$158,300
Home Value
$257,750 Zillow
45°F
Avg Temperature
260 sunny days/yr
132
Violent Crime/100K
1,015 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$83,125 median income, 2.0% unemployment
A+
Affordability
5.0 / 5.0
$158,300 home value, /mo rent
F
Safety
1.0 / 5.0
132 violent crimes/100K
D
Education
2.0 / 5.0
12.0% bachelor's degree or higher
Alto has a cool climate with an average annual temperature of 45°F (7°C). Winters average 17°F in January while summers reach 70°F in July. The area gets 260 sunny days per year. Annual precipitation totals 35.6 inches. Air quality is rated Good with a median AQI of 38.
Temperature
17°F Jan (-8°C)
70°F Jul (21°C)
| Annual Average | 45.1°F |
| 16% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 932 ft (284 m) |
| Area | 0.8 sq mi (2.0 km²) |
| Population Density | 151/sq mi |
| Coordinates | 43.6676°N, 88.7924°W |
| Timezone | America/Chicago |
| County | Green Lake County County |
| Nearest Airport | Wittman Regional (OSH) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 58.1 / 100 |
| Social Vulnerability | 86.1 / 100 |
| Community Resilience | 77.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
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) | 1.1 in | Driest |
| March | 32°F (-0°C) | 2.0 in | |
| April | 45°F (7°C) | 3.0 in | |
| May | 57°F (14°C) | 3.2 in | |
| June | 67°F (19°C) | 3.6 in | |
| July | 70°F (21°C) | 3.6 in | Warmest |
| August | 68°F (20°C) | 3.8 in | |
| September | 60°F (16°C) | 3.9 in | Wettest |
| October | 49°F (9°C) | 2.4 in | |
| November | 35°F (1°C) | 2.2 in | |
| December | 22°F (-6°C) | 1.5 in |
Alto has a seasonal temperature swing of 53°F / from 17°F in January to 70°F in July. Total annual precipitation is 31.4 inches, with September being the wettest month (3.9") and February the driest (1.1").