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Jamesville Colony, SD
Full City Profile · South Dakota · Yankton County County
5.0
/5.0
A+
Excellent
66
Population
600/sq mi density
48°F
Avg Temperature
291 sunny days/yr
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Jamesville Colony experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 74°F in July. The area gets 291 sunny days per year. Annual precipitation totals 25.0 inches. The area receives 39.2 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
19°F Jan (-7°C)
74°F Jul (24°C)
| Annual Average | 48.2°F |
| 11% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 291 days/yr |
Geography
| Elevation | 1,186 ft (361 m) |
| Area | 0.1 sq mi (0.3 km²) |
| Population Density | 600/sq mi |
| Coordinates | 43.1015°N, 97.4818°W |
| Timezone | America/Chicago |
| County | Yankton County County |
| Nearest Airport | Joe Foss Field (FSD) 50 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 63.4 / 100 |
| Social Vulnerability | 66.6 / 100 |
| Community Resilience | 84.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 0.4 in | Coldest, Driest |
| February | 24°F (-5°C) | 0.6 in | |
| March | 35°F (2°C) | 1.6 in | |
| April | 48°F (9°C) | 2.3 in | |
| May | 60°F (16°C) | 3.0 in | |
| June | 70°F (21°C) | 3.2 in | Wettest |
| July | 74°F (24°C) | 2.9 in | Warmest |
| August | 72°F (22°C) | 2.4 in | |
| September | 63°F (17°C) | 2.4 in | |
| October | 50°F (10°C) | 1.7 in | |
| November | 33°F (1°C) | 1.2 in | |
| December | 21°F (-6°C) | 0.6 in |
Jamesville Colony has a seasonal temperature swing of 55°F / from 19°F in January to 74°F in July. Total annual precipitation is 22.2 inches, with June being the wettest month (3.2") and January the driest (0.4").