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Little Eagle CDP, SD

ZIP 57639 — Climate & Environment

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Low Income AreaLow Snow Area

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 57639

Disaster Risk (FEMA NRI)

County-linked natural hazard risk from FEMA National Risk Index — useful for comparing insurance and disaster exposure.

FEMA’s National Risk Index rates natural-hazard risk for Little Eagle CDP, SD as Very Low (composite score 38.1), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (77.3) and flood (16.1). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Overall rating
Very Low
Risk index
38.1
Flood risk
16.1
Wildfire risk
77.3
Earthquake risk
7.4
Tornado risk
23.6
Winter weather risk
77.1
Hail risk
64.8

Climate & Weather in ZIP Code 57639

Climate normals for Little Eagle CDP, SD show little to no average snow and around 20.1 inches of annual precipitation. Pair that with FEMA NRI hazard context (overall rating Very Low) when evaluating long-term housing and insurance exposure.

7-day weather forecast

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Sunrise, sunset & moon

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Monthly Temperature

30-year climate normals (avg. monthly temperature)

Climate Data
Hardiness Zone
4a
Annual Snow Days
0
Annual Precipitation
20.08 in
FEMA NRI rating
Very Low

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone4a
Annual precip (in)20.08
Snow days0
Broadband access49.3%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingVery Low
NRI risk index38.1
Flood risk (NRI)16.1
Wildfire risk (NRI)77.3
IRS net migration23