Deerfield, WI
Full City Profile · Wisconsin · Dane County County
4.7
/5.0
A+
Excellent
2,489
Population
1,147/sq mi density
$88,424
Median Income
$40,732 per capita
$292,500
Home Value
$424,695 Zillow
$1,043
Median Rent
26.3% income on rent
47°F
Avg Temperature
A+
Overall
4.7 / 5.0
Strong
A+
Economy
4.8 / 5.0
$88,424 median income, 1.3% unemployment
A+
Affordability
4.8 / 5.0
$292,500 home value, $1,043/mo rent
A
Education
4.4 / 5.0
42.7% bachelor's degree or higher
Deerfield 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. Annual precipitation totals 37.0 inches. The area receives 42.3 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
19°F Jan (-7°C)
73°F Jul (23°C)
| Annual Average | 47.4°F |
| 12% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 869 ft (265 m) |
| Area | 2.2 sq mi (5.6 km²) |
| Population Density | 1,147/sq mi |
| Coordinates | 43.0492°N, 89.0762°W |
| Timezone | America/Chicago |
| County | Dane County County |
| Nearest Airport | Dane County Regional/Truax Field (MSN) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 72.1% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0501 ppm |
| PM2.5 (Fine Particles) | 10.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.9 / 100 |
| Social Vulnerability | 15.9 / 100 |
| Community Resilience | 97.8 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Very High |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.4 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.5 in | |
| March | 34°F (1°C) | 2.0 in | |
| April | 46°F (8°C) | 3.6 in | |
| May | 59°F (15°C) | 4.4 in | |
| June | 69°F (21°C) | 5.1 in | Wettest |
| July | 73°F (23°C) | 4.4 in | Warmest |
| August | 71°F (22°C) | 4.5 in | |
| September | 63°F (17°C) | 3.5 in | |
| October | 51°F (10°C) | 2.8 in | |
| November | 37°F (3°C) | 2.1 in | |
| December | 25°F (-4°C) | 1.7 in |
Deerfield has a seasonal temperature swing of 54°F / from 19°F in January to 73°F in July. Total annual precipitation is 37.0 inches, with June being the wettest month (5.1") and January the driest (1.4").