Jefferson, IA

Full City Profile · Iowa · Greene County County

3.2 /5.0

B Good

4,164 Population 692/sq mi density

$54,286 Median Income $38,198 per capita

$126,900 Home Value $169,238 Zillow

$745 Median Rent 27.0% income on rent

48°F Avg Temperature 260 sunny days/yr

73 Violent Crime/100K 1,019 property/100K

Overall

3.2 / 5.0

Good overall score based on economy, affordability, safety and education

Economy

4.0 / 5.0

$54,286 median income, 0.8% unemployment

A+

Affordability

5.0 / 5.0

$126,900 home value, $745/mo rent

Safety

1.0 / 5.0

73 violent crimes/100K

C+

Education

2.7 / 5.0

21.7% bachelor's degree or higher

Jefferson experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 18°F in January while summers reach 73°F in July. The area gets 260 sunny days per year. Annual precipitation totals 35.3 inches. The area receives 31.7 inches of snow annually. Air quality is rated Good with a median AQI of 43.

Temperature

18°F Jan (-8°C) 73°F Jul (23°C)

Annual Average	47.8°F
	11% below US avg
January Average	18°F (-8°C)
July Average	73°F (23°C)
Sunny Days	260 days/yr

Geography

Elevation	1,057 ft (322 m)
Area	6.0 sq mi (15.6 km²)
Population Density	692/sq mi
Coordinates	42.0177°N, 94.3794°W
Timezone	America/Chicago
County	Greene County County
Nearest Airport	Fort Dodge Regional (FOD) 38 miles away

Precipitation & Snow

Annual Rainfall 35.3"

7% below US avg

Snowfall 31.7"

Wettest Month (Jun) 4.65"

Driest Month (Jan) 0.87"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	31.8 / 100
Social Vulnerability	20.2 / 100
Community Resilience	95.2 / 100

Hazard Breakdown

Tornado	Relatively Moderate
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	Relatively Low
Drought	Relatively High
Cold Wave	Relatively Moderate
Landslide	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

1 earthquake (M2.5+) within 150 km since 1990. Strongest: M2.7. Most recent: M2.7 on Jun 30, 2021.

Jun 30, 2021	4 km E of Rembrandt, Iowa	M2.7	108 km

Source: USGS (M2.5+, 1990–2025)

Tornado History

688 tornadoes (EF0+) within 100 km since 1950. Strongest: EF5. Total: 22 fatalities, 332 injuries.

Date	Rating	Distance	Fatalities
Jun 13, 1976	EF5	43 km	0
Jun 27, 1953	EF5	69 km	1
Mar 5, 2022	EF4	89 km	6
Apr 9, 2011	EF4	88 km	0
May 27, 1995	EF4	35 km	0
May 27, 1995	EF4	43 km	0
May 24, 1989	EF4	52 km	0
Sep 28, 1986	EF4	71 km	0
Jun 28, 1979	EF4	71 km	3
May 4, 1977	EF4	60 km	0
Jun 18, 1974	EF4	71 km	2
Jun 8, 1967	EF4	58 km	0
May 5, 1965	EF4	32 km	0
May 10, 1959	EF4	61 km	0
Jun 9, 1954	EF4	41 km	1
Jul 14, 2021	EF3	43 km	0
Apr 9, 2011	EF3	84 km	0
Apr 9, 2011	EF3	83 km	0
Nov 12, 2005	EF3	30 km	1
Apr 14, 1994	EF3	87 km	0

Source: NOAA SPC (EF0+, 1950–2024)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	18°F (-8°C)	0.9 in	Coldest, Driest
February	24°F (-4°C)	0.9 in
March	36°F (2°C)	2.1 in
April	49°F (10°C)	3.2 in
May	61°F (16°C)	4.2 in
June	71°F (22°C)	4.7 in	Wettest
July	73°F (23°C)	3.9 in	Warmest
August	72°F (22°C)	3.9 in
September	64°F (18°C)	3.4 in
October	52°F (11°C)	2.5 in
November	36°F (2°C)	1.6 in
December	23°F (-5°C)	1.1 in

Jefferson has a seasonal temperature swing of 55°F / from 18°F in January to 73°F in July. Total annual precipitation is 32.3 inches, with June being the wettest month (4.7") and January the driest (0.9").

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