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Portland, IA
Full City Profile · Iowa · Cerro Gordo County County
3.0
/5.0
B
Good
14
Population
14/sq mi density
46°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
F
Safety
1.0 / 5.0
94 violent crimes/100K
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Portland experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 16°F in January while summers reach 72°F in July. The area gets 260 sunny days per year. Annual precipitation totals 36.3 inches. Air quality is rated Good with a median AQI of 43.
Temperature
16°F Jan (-9°C)
72°F Jul (22°C)
| Annual Average | 45.6°F |
| 16% below US avg | |
| January Average | 16°F (-9°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,124 ft (343 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 14/sq mi |
| Coordinates | 43.1226°N, 93.1375°W |
| Timezone | America/Chicago |
| County | Cerro Gordo County County |
| Nearest Airport | Northeast Iowa Regional (CCY) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 69.6 / 100 |
| Social Vulnerability | 46.3 / 100 |
| Community Resilience | 92.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| 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 | 16°F (-9°C) | 0.8 in | Coldest, Driest |
| February | 21°F (-6°C) | 0.8 in | |
| March | 33°F (1°C) | 1.9 in | |
| April | 47°F (8°C) | 3.1 in | |
| May | 60°F (15°C) | 4.0 in | |
| June | 69°F (21°C) | 4.6 in | Wettest |
| July | 72°F (22°C) | 4.5 in | Warmest |
| August | 70°F (21°C) | 4.2 in | |
| September | 62°F (17°C) | 4.0 in | |
| October | 50°F (10°C) | 2.5 in | |
| November | 34°F (1°C) | 1.6 in | |
| December | 20°F (-7°C) | 1.1 in |
Portland has a seasonal temperature swing of 56°F / from 16°F in January to 72°F in July. Total annual precipitation is 33.2 inches, with June being the wettest month (4.6") and January the driest (0.8").