All Countries
Grafton, IA
Full City Profile · Iowa · Worth County County
3.0
/5.0
B
Good
233
Population
728/sq mi density
$52,188
Median Income
$36,021 per capita
$94,600
Home Value
$169,560 Zillow
$655
Median Rent
19.0% income on rent
43°F
Avg Temperature
260 sunny days/yr
94
Violent Crime/100K
3,414 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$52,188 median income, 4.3% unemployment
A+
Affordability
5.0 / 5.0
$94,600 home value, $655/mo rent
F
Safety
1.0 / 5.0
94 violent crimes/100K
C
Education
2.2 / 5.0
14.4% bachelor's degree or higher
Grafton has a cool climate with an average annual temperature of 43°F (6°C). Winters average 13°F in January while summers reach 69°F in July. The area gets 260 sunny days per year. Annual precipitation totals 35.5 inches. The area receives 40.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
13°F Jan (-11°C)
69°F Jul (21°C)
| Annual Average | 43.0°F |
| 20% below US avg | |
| January Average | 13°F (-11°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,228 ft (374 m) |
| Area | 0.3 sq mi (0.9 km²) |
| Population Density | 728/sq mi |
| Coordinates | 43.3307°N, 93.0687°W |
| Timezone | America/Chicago |
| County | Worth County County |
| Nearest Airport | Northeast Iowa Regional (CCY) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 9.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 68.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 13°F (-11°C) | 0.8 in | Coldest, Driest |
| February | 20°F (-7°C) | 0.8 in | |
| March | 33°F (0°C) | 1.9 in | |
| April | 46°F (8°C) | 3.2 in | |
| May | 59°F (15°C) | 3.9 in | |
| June | 69°F (21°C) | 4.5 in | Wettest |
| July | 69°F (21°C) | 4.3 in | |
| August | 70°F (21°C) | 4.3 in | Warmest |
| September | 61°F (16°C) | 4.0 in | |
| October | 49°F (10°C) | 2.5 in | |
| November | 33°F (1°C) | 1.6 in | |
| December | 19°F (-7°C) | 1.1 in |
Grafton has a seasonal temperature swing of 57°F / from 13°F in January to 70°F in August. Total annual precipitation is 33.0 inches, with June being the wettest month (4.5") and January the driest (0.8").