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Gregory, SD
Full City Profile · South Dakota · Gregory County County
3.8
/5.0
B+
Good
1,330
Population
773/sq mi density
$47,629
Median Income
$27,915 per capita
$105,600
Home Value
$180,256 Zillow
$746
Median Rent
29.5% income on rent
47°F
Avg Temperature
291 sunny days/yr
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$47,629 median income, 2.8% unemployment
A+
Affordability
5.0 / 5.0
$105,600 home value, $746/mo rent
C+
Education
2.5 / 5.0
18.9% bachelor's degree or higher
Gregory experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 21°F in January while summers reach 74°F in July. The area gets 291 sunny days per year. Annual precipitation totals 26.7 inches. The area receives 45.0 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
21°F Jan (-6°C)
74°F Jul (23°C)
| Annual Average | 47.3°F |
| 12% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 291 days/yr |
Geography
| Elevation | 2,168 ft (661 m) |
| Area | 1.7 sq mi (4.4 km²) |
| Population Density | 773/sq mi |
| Coordinates | 43.2300°N, 99.4209°W |
| Timezone | America/Chicago |
| County | Gregory County County |
| Nearest Airport | Ainsworth Regional (ANW) 53 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 16.2 / 100 |
| Social Vulnerability | 18.9 / 100 |
| Community Resilience | 78.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| 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 | 21°F (-6°C) | 0.5 in | Coldest, Driest |
| February | 26°F (-4°C) | 0.6 in | |
| March | 35°F (2°C) | 1.7 in | |
| April | 47°F (8°C) | 2.7 in | |
| May | 58°F (15°C) | 3.5 in | |
| June | 68°F (20°C) | 3.6 in | Wettest |
| July | 74°F (23°C) | 3.2 in | Warmest |
| August | 73°F (23°C) | 2.3 in | |
| September | 63°F (17°C) | 2.4 in | |
| October | 50°F (10°C) | 1.5 in | |
| November | 34°F (1°C) | 0.9 in | |
| December | 23°F (-5°C) | 0.7 in |
Gregory has a seasonal temperature swing of 53°F / from 21°F in January to 74°F in July. Total annual precipitation is 23.8 inches, with June being the wettest month (3.6") and January the driest (0.5").