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Garrison, IA
Full City Profile · Iowa · Benton County County
2.8
/5.0
C+
Fair
292
Population
942/sq mi density
$57,083
Median Income
$27,883 per capita
$65,000
Home Value
$246,998 Zillow
$830
Median Rent
27.8% income on rent
46°F
Avg Temperature
260 sunny days/yr
77
Violent Crime/100K
1,162 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$57,083 median income, 1.3% unemployment
A+
Affordability
5.0 / 5.0
$65,000 home value, $830/mo rent
F
Safety
1.0 / 5.0
77 violent crimes/100K
D
Education
1.5 / 5.0
6.7% bachelor's degree or higher
Garrison experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 17°F in January while summers reach 71°F in July. The area gets 260 sunny days per year. Annual precipitation totals 37.9 inches. The area receives 33.6 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
17°F Jan (-8°C)
71°F Jul (22°C)
| Annual Average | 46.0°F |
| 15% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 893 ft (272 m) |
| Area | 0.3 sq mi (0.6 km²) |
| Population Density | 942/sq mi |
| Coordinates | 42.1450°N, 92.1442°W |
| Timezone | America/Chicago |
| County | Benton County County |
| Nearest Airport | The Eastern Iowa (CID) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 28.8 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 92.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| 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 Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 0.9 in | Coldest, Driest |
| February | 24°F (-5°C) | 1.0 in | |
| March | 36°F (2°C) | 2.2 in | |
| April | 49°F (9°C) | 3.4 in | |
| May | 61°F (16°C) | 4.1 in | |
| June | 70°F (21°C) | 4.5 in | Wettest |
| July | 71°F (22°C) | 4.1 in | |
| August | 71°F (22°C) | 4.3 in | Warmest |
| September | 63°F (17°C) | 3.9 in | |
| October | 51°F (11°C) | 2.6 in | |
| November | 36°F (2°C) | 2.1 in | |
| December | 23°F (-5°C) | 1.4 in |
Garrison has a seasonal temperature swing of 54°F / from 17°F in January to 71°F in August. Total annual precipitation is 34.5 inches, with June being the wettest month (4.5") and January the driest (0.9").