Twin Brooks, SD
Full City Profile · South Dakota · Grant County County
3.3
/5.0
B
Good
35
Population
85/sq mi density
$63,125
Median Income
$34,063 per capita
$75,000
Home Value
$233,146 Zillow
44°F
Avg Temperature
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$63,125 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$75,000 home value, /mo rent
F
Education
1.2 / 5.0
3.1% bachelor's degree or higher
Twin Brooks has a cool climate with an average annual temperature of 44°F (7°C). Winters average 12°F in January while summers reach 73°F in July. Annual precipitation totals 25.4 inches. The area receives 51.0 inches of snow annually.
Temperature
12°F Jan (-11°C)
73°F Jul (23°C)
| Annual Average | 44.0°F |
| 19% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 1,259 ft (384 m) |
| Area | 0.4 sq mi (1.1 km²) |
| Population Density | 85/sq mi |
| Coordinates | 45.2090°N, 96.7855°W |
| Timezone | America/Chicago |
| County | Grant County County |
| Nearest Airport | Watertown Regional (ATY) 27 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 18.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 78.9 / 100 |
Hazard Breakdown
| Tornado | Relatively 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 Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 0.7 in | Coldest |
| February | 17°F (-9°C) | 0.7 in | Driest |
| March | 29°F (-1°C) | 1.2 in | |
| April | 44°F (6°C) | 2.4 in | |
| May | 57°F (14°C) | 2.9 in | |
| June | 68°F (20°C) | 3.9 in | Wettest |
| July | 73°F (23°C) | 3.8 in | Warmest |
| August | 70°F (21°C) | 3.2 in | |
| September | 62°F (17°C) | 2.6 in | |
| October | 47°F (8°C) | 2.3 in | |
| November | 32°F (-0°C) | 0.9 in | |
| December | 18°F (-8°C) | 0.8 in |
Twin Brooks has a seasonal temperature swing of 61°F / from 12°F in January to 73°F in July. Total annual precipitation is 25.4 inches, with June being the wettest month (3.9") and February the driest (0.7").