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Morrison, IA

Full City Profile · Iowa · Grundy County County

3.4 /5.0
B Good
125 Population 1,250/sq mi density
$88,750 Median Income $31,008 per capita
$137,500 Home Value $184,315 Zillow
47°F Avg Temperature 260 sunny days/yr
122 Violent Crime/100K 1,923 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$88,750 median income, 1.1% unemployment
A+
Affordability
5.0 / 5.0
$137,500 home value, /mo rent
F
Safety
1.0 / 5.0
122 violent crimes/100K
C+
Education
2.9 / 5.0
24.1% bachelor's degree or higher
Morrison experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 17°F in January while summers reach 73°F in July. The area gets 260 sunny days per year. Annual precipitation totals 36.8 inches. The area receives 32.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.

Temperature

17°F Jan (-8°C) 73°F Jul (23°C)
Annual Average47.1°F
13% below US avg
January Average17°F (-8°C)
July Average73°F (23°C)
Sunny Days260 days/yr

Geography

Elevation953 ft (290 m)
Area0.1 sq mi (0.3 km²)
Population Density1,250/sq mi
Coordinates42.3430°N, 92.6733°W
TimezoneAmerica/Chicago
CountyGrundy County County
Nearest AirportWaterloo Regional (ALO)
20 miles away

Precipitation & Snow

Annual Rainfall 36.8"
3% below US avg
Snowfall 32.3"
Wettest Month (Jun) 4.65"
Driest Month (Jan) 0.87"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score13.1 / 100
Social Vulnerability10.6 / 100
Community Resilience94.7 / 100

Hazard Breakdown

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

Tornado History

680 tornadoes (EF0+) within 100 km since 1950. Strongest: EF5. Total: 44 fatalities, 1,170 injuries.

Date Rating Distance Fatalities
May 25, 2008 EF5 29 km 9
May 15, 1968 EF5 71 km 5
May 15, 1968 EF5 60 km 13
Oct 14, 1966 EF5 95 km 6
May 30, 1989 EF4 41 km 0
May 24, 1989 EF4 95 km 0
Aug 12, 1974 EF4 98 km 0
Aug 12, 1974 EF4 78 km 0
Aug 26, 1965 EF4 39 km 1
Sep 1, 1961 EF4 56 km 0
Apr 30, 1954 EF4 81 km 0
Jul 19, 2018 EF3 41 km 0
May 25, 2008 EF3 61 km 0
May 21, 2004 EF3 78 km 0
May 11, 2000 EF3 27 km 1
Jul 27, 1995 EF3 86 km 0
Jun 19, 1993 EF3 94 km 0
Mar 22, 1991 EF3 93 km 0
Jun 28, 1990 EF3 52 km 0
Mar 13, 1990 EF3 68 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

5 wildfires (100+ acres) within 100 km. Largest: NEAL SMITH WUI 2016 1 (1,050 ac, 2016).

Year Name Acres Distance
2016 NEAL SMITH WUI 2016 1 1,050 99 km
2009 UNNAMED 939 63 km
2010 FOLEY 786 66 km
2011 ACE AUTO 676 74 km
2011 IRCP WUI ROFAE #2 FY11 510 57 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 17°F (-8°C) 0.9 in Coldest, Driest
February 22°F (-5°C) 1.0 in
March 34°F (1°C) 2.2 in
April 48°F (9°C) 3.2 in
May 60°F (16°C) 4.2 in
June 70°F (21°C) 4.7 in Wettest
July 73°F (23°C) 4.6 in Warmest
August 70°F (21°C) 4.0 in
September 63°F (17°C) 3.5 in
October 50°F (10°C) 2.6 in
November 35°F (2°C) 1.8 in
December 21°F (-6°C) 1.3 in

Morrison has a seasonal temperature swing of 55°F / from 17°F in January to 73°F in July. Total annual precipitation is 33.8 inches, with June being the wettest month (4.7") and January the driest (0.9").

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