Bertha, MN
Full City Profile · Minnesota · Otter Tail County County
3.5
/5.0
B+
Good
489
Population
453/sq mi density
$54,821
Median Income
$24,386 per capita
$77,900
Home Value
$233,330 Zillow
$750
Median Rent
28.9% income on rent
40°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$54,821 median income, 7.6% unemployment
A+
Affordability
5.0 / 5.0
$77,900 home value, $750/mo rent
C
Education
2.1 / 5.0
14.3% bachelor's degree or higher
Bertha has a cool climate with an average annual temperature of 40°F (4°C). Winters average 8°F in January while summers reach 68°F in July. Annual precipitation totals 29.3 inches. The area receives 50.8 inches of snow annually.
Temperature
8°F Jan (-13°C)
68°F Jul (20°C)
| Annual Average | 40.2°F |
| 26% below US avg | |
| January Average | 8°F (-13°C) |
| July Average | 68°F (20°C) |
Geography
| Elevation | 1,394 ft (425 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 453/sq mi |
| Coordinates | 46.2671°N, 95.0618°W |
| Timezone | America/Chicago |
| County | Otter Tail County County |
| Nearest Airport | Brainerd Lakes Regional (BRD) 45 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 79.4 / 100 |
| Social Vulnerability | 53.5 / 100 |
| Community Resilience | 92.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Very High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 8°F (-13°C) | 0.9 in | Coldest |
| February | 12°F (-11°C) | 0.8 in | Driest |
| March | 25°F (-4°C) | 1.4 in | |
| April | 41°F (5°C) | 2.6 in | |
| May | 54°F (12°C) | 3.5 in | |
| June | 64°F (18°C) | 4.4 in | Wettest |
| July | 68°F (20°C) | 4.3 in | Warmest |
| August | 66°F (19°C) | 3.6 in | |
| September | 58°F (14°C) | 2.9 in | |
| October | 44°F (7°C) | 2.8 in | |
| November | 29°F (-2°C) | 1.3 in | |
| December | 15°F (-9°C) | 0.9 in |
Bertha has a seasonal temperature swing of 60°F / from 8°F in January to 68°F in July. Total annual precipitation is 29.3 inches, with June being the wettest month (4.4") and February the driest (0.8").