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Monticello, WI
Full City Profile · Wisconsin · Green County County
3.6
/5.0
B+
Good
1,186
Population
997/sq mi density
$70,625
Median Income
$37,606 per capita
$200,000
Home Value
$335,808 Zillow
$822
Median Rent
24.6% income on rent
47°F
Avg Temperature
260 sunny days/yr
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$70,625 median income, 1.2% unemployment
A+
Affordability
5.0 / 5.0
$200,000 home value, $822/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C+
Education
2.6 / 5.0
20.4% bachelor's degree or higher
Monticello experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 19°F in January while summers reach 73°F in July. The area gets 260 sunny days per year. Annual precipitation totals 39.7 inches. The area receives 41.5 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
19°F Jan (-7°C)
73°F Jul (23°C)
| Annual Average | 47.3°F |
| 12% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 834 ft (254 m) |
| Area | 1.2 sq mi (3.1 km²) |
| Population Density | 997/sq mi |
| Coordinates | 42.7447°N, 89.5903°W |
| Timezone | America/Chicago |
| County | Green County County |
| Nearest Airport | Southern Wisconsin Regional (JVL) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 46.4 / 100 |
| Social Vulnerability | 17.8 / 100 |
| Community Resilience | 81.9 / 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 | 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 | 19°F (-7°C) | 1.1 in | Coldest, Driest |
| February | 21°F (-6°C) | 1.1 in | |
| March | 33°F (1°C) | 2.2 in | |
| April | 46°F (8°C) | 3.2 in | |
| May | 58°F (14°C) | 3.5 in | |
| June | 67°F (19°C) | 4.1 in | |
| July | 73°F (23°C) | 3.9 in | Warmest |
| August | 69°F (21°C) | 4.1 in | Wettest |
| September | 61°F (16°C) | 3.8 in | |
| October | 49°F (10°C) | 2.5 in | |
| November | 36°F (2°C) | 2.2 in | |
| December | 23°F (-5°C) | 1.7 in |
Monticello has a seasonal temperature swing of 54°F / from 19°F in January to 73°F in July. Total annual precipitation is 33.6 inches, with August being the wettest month (4.1") and January the driest (1.1").