Iona, ID
Full City Profile · Idaho · Bonneville County County
4.0
/5.0
A
Great
2,882
Population
2,234/sq mi density
$83,750
Median Income
$28,897 per capita
$364,400
Home Value
$439,088 Zillow
$1,284
Median Rent
34.6% income on rent
44°F
Avg Temperature
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.5 / 5.0
$83,750 median income, 0.9% unemployment
A
Affordability
4.2 / 5.0
$364,400 home value, $1,284/mo rent
B
Education
3.3 / 5.0
28.5% bachelor's degree or higher
Iona has a cool climate with an average annual temperature of 44°F (7°C). Winters average 20°F in January while summers reach 68°F in July. Annual precipitation totals 10.1 inches. The area receives 65.7 inches of snow annually. Air quality is rated Good with a median AQI of 22.
Temperature
20°F Jan (-6°C)
68°F Jul (20°C)
| Annual Average | 44.2°F |
| 18% below US avg | |
| January Average | 20°F (-6°C) |
| July Average | 68°F (20°C) |
Geography
| Elevation | 4,786 ft (1,459 m) |
| Area | 1.0 sq mi (2.7 km²) |
| Population Density | 2,234/sq mi |
| Coordinates | 43.5276°N, 111.9314°W |
| Timezone | America/Boise |
| County | Bonneville County County |
| Nearest Airport | Idaho Falls Regional (IDA) 7 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 22.0 |
| Rating | Good |
| Good Days % | 86.8% |
| Unhealthy Days | 0 |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 82.4 / 100 |
| Social Vulnerability | 12.2 / 100 |
| Community Resilience | 92.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Hell's Half Acre (42 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hell's Half Acre | Shield | 1,631 m (5,351 ft) | -3250 | 42 km |
| Wapi Lava Field | Shield | 1,604 m (5,262 ft) | -300 | 127 km |
| Craters of the Moon | Pyroclastic cone(s) | 2,005 m (6,578 ft) | -130 | 127 km |
| Yellowstone | Caldera(s) | 2,805 m (9,203 ft) | -1350 | 142 km |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 199 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-6°C) | 0.7 in | Coldest |
| February | 25°F (-4°C) | 0.6 in | |
| March | 36°F (2°C) | 0.8 in | |
| April | 44°F (7°C) | 1.0 in | |
| May | 53°F (12°C) | 1.6 in | Wettest |
| June | 60°F (16°C) | 1.1 in | |
| July | 68°F (20°C) | 0.5 in | Warmest, Driest |
| August | 67°F (19°C) | 0.6 in | |
| September | 58°F (14°C) | 1.0 in | |
| October | 45°F (7°C) | 0.9 in | |
| November | 32°F (0°C) | 0.7 in | |
| December | 22°F (-6°C) | 0.8 in |
Iona has a seasonal temperature swing of 48°F / from 20°F in January to 68°F in July. Total annual precipitation is 10.1 inches, with May being the wettest month (1.6") and July the driest (0.5").