Jefferson, IA
Full City Profile · Iowa · Greene County County
3.2
/5.0
B
Good
4,164
Population
692/sq mi density
$54,286
Median Income
$38,198 per capita
$126,900
Home Value
$177,766 Zillow
$745
Median Rent
27.0% income on rent
48°F
Avg Temperature
98
Violent Crime/100K
1,301 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.0 / 5.0
$54,286 median income, 1.5% unemployment
A+
Affordability
5.0 / 5.0
$126,900 home value, $745/mo rent
F
Safety
1.0 / 5.0
98 violent crimes/100K
C+
Education
2.7 / 5.0
21.7% bachelor's degree or higher
Jefferson experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 18°F in January while summers reach 73°F in July. Annual precipitation totals 35.3 inches. The area receives 31.7 inches of snow annually.
Temperature
18°F Jan (-8°C)
73°F Jul (23°C)
| Annual Average | 47.8°F |
| 11% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 1,057 ft (322 m) |
| Area | 6.0 sq mi (15.6 km²) |
| Population Density | 692/sq mi |
| Coordinates | 42.0177°N, 94.3794°W |
| Timezone | America/Chicago |
| County | Greene County County |
| Nearest Airport | Fort Dodge Regional (FOD) 38 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 31.8 / 100 |
| Social Vulnerability | 20.2 / 100 |
| Community Resilience | 95.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.0 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.3 in | |
| March | 36°F (2°C) | 2.0 in | |
| April | 48°F (9°C) | 3.6 in | |
| May | 60°F (16°C) | 5.0 in | |
| June | 70°F (21°C) | 5.2 in | Wettest |
| July | 73°F (23°C) | 4.4 in | Warmest |
| August | 71°F (22°C) | 4.2 in | |
| September | 64°F (18°C) | 3.1 in | |
| October | 51°F (11°C) | 2.6 in | |
| November | 36°F (2°C) | 1.7 in | |
| December | 24°F (-4°C) | 1.4 in |
Jefferson has a seasonal temperature swing of 55°F / from 18°F in January to 73°F in July. Total annual precipitation is 35.3 inches, with June being the wettest month (5.2") and January the driest (1.0").