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Sully, IA
Full City Profile · Iowa · Poweshiek County County
3.4
/5.0
B
Good
1,092
Population
1,883/sq mi density
$86,576
Median Income
$37,670 per capita
$165,600
Home Value
$251,928 Zillow
$940
Median Rent
22.7% income on rent
48°F
Avg Temperature
275 sunny days/yr
164
Violent Crime/100K
1,604 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$86,576 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$165,600 home value, $940/mo rent
F
Safety
1.0 / 5.0
164 violent crimes/100K
C+
Education
2.9 / 5.0
23.6% bachelor's degree or higher
Sully experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 73°F in July. The area gets 275 sunny days per year. Annual precipitation totals 38.2 inches. The area receives 31.0 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
19°F Jan (-7°C)
73°F Jul (23°C)
| Annual Average | 47.5°F |
| 12% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 921 ft (281 m) |
| Area | 0.6 sq mi (1.5 km²) |
| Population Density | 1,883/sq mi |
| Coordinates | 41.5780°N, 92.8468°W |
| Timezone | America/Chicago |
| County | Poweshiek County County |
| Nearest Airport | Ottumwa Regional (OTM) 39 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 31.3 / 100 |
| Social Vulnerability | 21.4 / 100 |
| Community Resilience | 84.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| 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 | 19°F (-7°C) | 1.1 in | Coldest, Driest |
| February | 26°F (-4°C) | 1.1 in | |
| March | 37°F (3°C) | 2.4 in | |
| April | 50°F (10°C) | 3.4 in | |
| May | 62°F (16°C) | 4.2 in | |
| June | 71°F (22°C) | 4.6 in | Wettest |
| July | 73°F (23°C) | 4.1 in | Warmest |
| August | 72°F (22°C) | 4.0 in | |
| September | 64°F (18°C) | 3.9 in | |
| October | 52°F (11°C) | 2.7 in | |
| November | 37°F (3°C) | 2.1 in | |
| December | 25°F (-4°C) | 1.4 in |
Sully has a seasonal temperature swing of 53°F / from 19°F in January to 73°F in July. Total annual precipitation is 34.9 inches, with June being the wettest month (4.6") and January the driest (1.1").