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Griswold, IA
Full City Profile · Iowa · Montgomery County County
3.2
/5.0
B
Good
1,020
Population
1,672/sq mi density
$61,167
Median Income
$31,271 per capita
$89,400
Home Value
$176,911 Zillow
$937
Median Rent
20.7% income on rent
49°F
Avg Temperature
275 sunny days/yr
246
Violent Crime/100K
1,421 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$61,167 median income, 2.7% unemployment
A+
Affordability
5.0 / 5.0
$89,400 home value, $937/mo rent
F
Safety
1.0 / 5.0
246 violent crimes/100K
C+
Education
2.6 / 5.0
19.5% bachelor's degree or higher
Griswold experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 21°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 36.4 inches. The area receives 28.0 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
21°F Jan (-6°C)
74°F Jul (24°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,101 ft (336 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 1,672/sq mi |
| Coordinates | 41.2343°N, 95.1394°W |
| Timezone | America/Chicago |
| County | Montgomery County County |
| Nearest Airport | Eppley Airfield (OMA) 39 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0459 ppm |
| PM2.5 (Fine Particles) | 8.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 33.7 / 100 |
| Social Vulnerability | 34.2 / 100 |
| Community Resilience | 72.0 / 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 | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 0.8 in | Coldest, Driest |
| February | 26°F (-3°C) | 0.9 in | |
| March | 38°F (3°C) | 2.2 in | |
| April | 50°F (10°C) | 3.2 in | |
| May | 62°F (16°C) | 4.1 in | |
| June | 71°F (22°C) | 4.4 in | Wettest |
| July | 74°F (24°C) | 4.0 in | Warmest |
| August | 73°F (23°C) | 4.0 in | |
| September | 65°F (18°C) | 4.3 in | |
| October | 52°F (11°C) | 2.6 in | |
| November | 37°F (3°C) | 1.6 in | |
| December | 25°F (-4°C) | 1.1 in |
Griswold has a seasonal temperature swing of 54°F / from 21°F in January to 74°F in July. Total annual precipitation is 33.1 inches, with June being the wettest month (4.4") and January the driest (0.8").