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Onaka town, SD

ZIP 57466 — Climate & Environment

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

Working ClassLow Snow AreaRemote Work Hub

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 57466

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 Onaka town, SD as Very Low (composite score 8.0), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (67.5) and flood (6.8). 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
8.0
Flood risk
6.8
Wildfire risk
67.5
Earthquake risk
10.6
Tornado risk
21.1
Winter weather risk
54.3
Hail risk
69.8

Climate & Weather in ZIP Code 57466

Climate normals for Onaka town, SD show little to no average snow and around 21.4 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
4b
Annual Snow Days
0
Annual Precipitation
21.42 in
FEMA NRI rating
Very Low

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone4b
Annual precip (in)21.42
Snow days0
Broadband access94.4%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingVery Low
NRI risk index8.0
Flood risk (NRI)6.8
Wildfire risk (NRI)67.5
IRS net migration10