Norwalk, IA
Full City Profile · Iowa · Warren County County
3.8
/5.0
B+
Good
13,610
Population
1,168/sq mi density
$94,583
Median Income
$47,919 per capita
$275,700
Home Value
$334,184 Zillow
$869
Median Rent
26.3% income on rent
51°F
Avg Temperature
109
Violent Crime/100K
180 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$94,583 median income, 2.7% unemployment
A+
Affordability
5.0 / 5.0
$275,700 home value, $869/mo rent
F
Safety
1.0 / 5.0
109 violent crimes/100K
A
Education
4.2 / 5.0
40.2% bachelor's degree or higher
Norwalk experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 22°F in January while summers reach 76°F in July. Annual precipitation totals 36.5 inches. The area receives 36.5 inches of snow annually.
Temperature
22°F Jan (-5°C)
76°F Jul (24°C)
| Annual Average | 50.9°F |
| 6% below US avg | |
| January Average | 22°F (-5°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 909 ft (277 m) |
| Area | 11.1 sq mi (28.7 km²) |
| Population Density | 1,168/sq mi |
| Coordinates | 41.4837°N, 93.6955°W |
| Timezone | America/Chicago |
| County | Warren County County |
| Nearest Airport | Des Moines International (DSM) 1 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 36.1 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 91.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-5°C) | 1.1 in | Coldest, Driest |
| February | 27°F (-3°C) | 1.3 in | |
| March | 39°F (4°C) | 2.2 in | |
| April | 51°F (11°C) | 4.0 in | |
| May | 62°F (17°C) | 5.2 in | |
| June | 72°F (22°C) | 5.3 in | Wettest |
| July | 76°F (24°C) | 3.8 in | Warmest |
| August | 74°F (23°C) | 4.2 in | |
| September | 66°F (19°C) | 3.2 in | |
| October | 53°F (12°C) | 2.8 in | |
| November | 39°F (4°C) | 1.9 in | |
| December | 28°F (-2°C) | 1.6 in |
Norwalk has a seasonal temperature swing of 54°F / from 22°F in January to 76°F in July. Total annual precipitation is 36.6 inches, with June being the wettest month (5.3") and January the driest (1.1").