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Monmouth, IA
Full City Profile · Iowa · Jackson County County
2.6
/5.0
C+
Fair
112
Population
196/sq mi density
$46,389
Median Income
$30,995 per capita
$53,100
Home Value
$260,925 Zillow
48°F
Avg Temperature
260 sunny days/yr
165
Violent Crime/100K
3,111 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.1 / 5.0
$46,389 median income, 1.0% unemployment
A+
Affordability
5.0 / 5.0
$53,100 home value, /mo rent
F
Safety
1.0 / 5.0
165 violent crimes/100K
F
Education
1.4 / 5.0
5.1% bachelor's degree or higher
Monmouth experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 73°F in July. The area gets 260 sunny days per year. Annual precipitation totals 36.7 inches. The area receives 30.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
19°F Jan (-7°C)
73°F Jul (23°C)
| Annual Average | 47.9°F |
| 11% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 744 ft (227 m) |
| Area | 0.6 sq mi (1.5 km²) |
| Population Density | 196/sq mi |
| Coordinates | 42.0751°N, 90.8822°W |
| Timezone | America/Chicago |
| County | Jackson County County |
| Nearest Airport | Monticello Regional (MXO) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 36.1 / 100 |
| Social Vulnerability | 15.9 / 100 |
| Community Resilience | 75.5 / 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 | Relatively Low |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.2 in | Coldest |
| February | 24°F (-5°C) | 1.1 in | Driest |
| March | 36°F (2°C) | 2.3 in | |
| April | 48°F (9°C) | 3.3 in | |
| May | 60°F (16°C) | 3.8 in | |
| June | 69°F (21°C) | 4.5 in | Wettest |
| July | 73°F (23°C) | 3.8 in | Warmest |
| August | 71°F (22°C) | 4.3 in | |
| September | 63°F (17°C) | 4.1 in | |
| October | 51°F (11°C) | 2.6 in | |
| November | 37°F (3°C) | 2.3 in | |
| December | 24°F (-5°C) | 1.7 in |
Monmouth has a seasonal temperature swing of 54°F / from 19°F in January to 73°F in July. Total annual precipitation is 35.0 inches, with June being the wettest month (4.5") and February the driest (1.1").