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Crystal Lake, IA
Full City Profile · Iowa · Hancock County County
3.0
/5.0
B
Good
229
Population
916/sq mi density
$82,500
Median Income
$32,259 per capita
$86,000
Home Value
$88,960 Zillow
$830
Median Rent
25.0% income on rent
46°F
Avg Temperature
260 sunny days/yr
302
Violent Crime/100K
1,260 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$82,500 median income, 1.7% unemployment
A+
Affordability
5.0 / 5.0
$86,000 home value, $830/mo rent
F
Safety
1.0 / 5.0
302 violent crimes/100K
D
Education
1.8 / 5.0
10.4% bachelor's degree or higher
Crystal Lake experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 15°F in January while summers reach 72°F in July. The area gets 260 sunny days per year. Annual precipitation totals 34.3 inches. Air quality is rated Good with a median AQI of 43.
Temperature
15°F Jan (-9°C)
72°F Jul (22°C)
| Annual Average | 45.5°F |
| 16% below US avg | |
| January Average | 15°F (-9°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,277 ft (389 m) |
| Area | 0.3 sq mi (0.6 km²) |
| Population Density | 916/sq mi |
| Coordinates | 43.2230°N, 93.7927°W |
| Timezone | America/Chicago |
| County | Hancock County County |
| Nearest Airport | Fort Dodge Regional (FOD) 51 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 | 19.7 / 100 |
| Community Resilience | 80.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Very 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 | 15°F (-9°C) | 0.8 in | Coldest |
| February | 19°F (-7°C) | 0.8 in | Driest |
| March | 32°F (-0°C) | 1.8 in | |
| April | 46°F (8°C) | 3.1 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 69°F (20°C) | 4.5 in | Wettest |
| July | 72°F (22°C) | 4.3 in | Warmest |
| August | 70°F (21°C) | 4.1 in | |
| September | 62°F (17°C) | 3.3 in | |
| October | 50°F (10°C) | 2.3 in | |
| November | 33°F (1°C) | 1.6 in | |
| December | 19°F (-7°C) | 1.1 in |
Crystal Lake has a seasonal temperature swing of 57°F / from 15°F in January to 72°F in July. Total annual precipitation is 31.1 inches, with June being the wettest month (4.5") and February the driest (0.8").