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North Liberty, IA

Full City Profile · Iowa · Johnson County County

4.0 /5.0
A Great
20,782 Population 2,181/sq mi density
$103,933 Median Income $54,241 per capita
$300,000 Home Value $306,226 Zillow
$1,226 Median Rent 24.2% income on rent
51°F Avg Temperature 275 sunny days/yr
349 Violent Crime/100K 602 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
5.0 / 5.0
$103,933 median income, 2.3% unemployment
A+
Affordability
5.0 / 5.0
$300,000 home value, $1,226/mo rent
F
Safety
1.0 / 5.0
349 violent crimes/100K
A+
Education
5.0 / 5.0
53.3% bachelor's degree or higher
North Liberty experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 23°F in January while summers reach 76°F in July. The area gets 275 sunny days per year. Annual precipitation totals 35.7 inches. Air quality is rated Good with a median AQI of 43.

Temperature

23°F Jan (-5°C) 76°F Jul (24°C)
Annual Average51.0°F
6% below US avg
January Average23°F (-5°C)
July Average76°F (24°C)
Sunny Days275 days/yr

Geography

Elevation779 ft (237 m)
Area9.5 sq mi (24.7 km²)
Population Density2,181/sq mi
Coordinates41.7436°N, 91.6112°W
TimezoneAmerica/Chicago
CountyJohnson County County
Nearest AirportThe Eastern Iowa (CID)
12 miles away

Precipitation & Snow

Annual Rainfall 35.7"
6% below US avg
Wettest Month (Jun) 4.57"
Driest Month (Feb) 1.06"

Air Quality

AQI Median43.0
RatingGood

Air Pollutants (EPA 2023)

PM2.5 (Fine Particles)10.3 μg/m³

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score87.4 / 100
Social Vulnerability11.4 / 100
Community Resilience96.7 / 100

Hazard Breakdown

Tornado Relatively High
Hurricane Very Low
Earthquake Very Low
Wildfire Relatively Low
Flood Relatively Moderate
Hail Relatively High
Strong Wind Very High
Heat Wave Relatively Moderate
Winter Weather Relatively High
Lightning Relatively Moderate
Ice Storm Relatively Moderate
Drought Relatively Moderate
Cold Wave Relatively High
Landslide Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Tornado History

645 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 7 fatalities, 262 injuries.

Date Rating Distance Fatalities
Mar 31, 2023 EF4 60 km 0
Mar 13, 1990 EF4 56 km 0
Aug 12, 1974 EF4 68 km 0
Aug 12, 1974 EF4 47 km 0
Aug 26, 1965 EF4 79 km 1
Apr 11, 1965 EF4 58 km 1
Apr 30, 1954 EF4 41 km 0
Mar 31, 2023 EF3 97 km 0
Jun 1, 2007 EF3 63 km 0
May 21, 2004 EF3 38 km 0
May 15, 1998 EF3 53 km 0
Jul 27, 1995 EF3 95 km 0
May 9, 1995 EF3 64 km 0
Jun 19, 1993 EF3 76 km 0
Jun 19, 1993 EF3 98 km 0
Jul 13, 1992 EF3 63 km 0
May 8, 1988 EF3 69 km 0
Aug 15, 1978 EF3 87 km 0
May 4, 1977 EF3 97 km 0
Nov 9, 1975 EF3 87 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

9 wildfires (100+ acres) within 100 km. Largest: UNIT 3 (1,206 ac, 1999).

Year Name Acres Distance
1999 UNIT 3 1,206 83 km
2002 HSB 03 2 1,130 82 km
2009 UNNAMED 939 55 km
2010 FOLEY 786 52 km
2000 DESTRUST A 756 81 km
2011 ACE AUTO 676 42 km
2006 HSB 003 674 83 km
2004 HSB 009 608 82 km
2011 IRCP WUI ROFAE #2 FY11 510 62 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 23°F (-5°C) 1.1 in Coldest
February 26°F (-4°C) 1.1 in Driest
March 38°F (3°C) 2.3 in
April 50°F (10°C) 3.5 in
May 61°F (16°C) 4.1 in
June 71°F (22°C) 4.6 in Wettest
July 76°F (24°C) 4.5 in Warmest
August 73°F (23°C) 4.3 in
September 64°F (18°C) 4.0 in
October 53°F (12°C) 2.7 in
November 38°F (3°C) 2.2 in
December 25°F (-4°C) 1.6 in

North Liberty has a seasonal temperature swing of 53°F / from 23°F in January to 76°F in July. Total annual precipitation is 35.8 inches, with June being the wettest month (4.6") and February the driest (1.1").

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