Natural hazards · Dayton

Dayton, SD natural hazards

Most of the natural-hazard damage FEMA expects in Dayton comes from cold waves, and overall the risk is low for a U.S. community.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Dayton?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Dayton to be higher than in 22% of U.S. communities, mostly from cold waves and inland flooding.

Cold waves37%Inland flooding23%Hail10%Tornadoes10%Strong wind8%Wildfire5%Everything else6%

By hazard

What Dayton faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Cold waves

37% of expected damage

Above average · higher than 66% of U.S. places

Recorded about 14 times a year in the area

Inland flooding

23% of expected damage

Well below average · higher than 12% of U.S. places

Recorded about once a year in the area

Hail

10% of expected damage

Above average · higher than 72% of U.S. places

Recorded about 4 times a year in the area

Tornadoes

10% of expected damage

Well above average · higher than 86% of U.S. places

Recorded about once every 2 years in the area

Strong wind

8% of expected damage

Well above average · higher than 93% of U.S. places

Recorded about 3 times a year in the area

Wildfire

5% of expected damage

Well above average · higher than 95% of U.S. places

Lower here

Ice stormsWinter weatherHeat wavesEarthquakesLandslidesLightning

Not a risk here

Coastal floodingHurricanesDroughtAvalanchesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Dayton flood?

FEMA's records show no paid flood insurance claims in Dayton.

Disasters that hit Dayton

Federal disasters declared here

None of the disasters declared for Marshall County shows FEMA aid or repair money reaching Dayton itself in FEMA’s records.

Brought FEMA money into DaytonDeclared for Marshall County only

Marshall County has had 18 natural disasters declared since 1953, most often floods and severe storms.

Around Dayton

Dayton and the towns around it

Very lowLowModerateHighVery high

Southwestmostly cold wavesModerate

Portagemostly inland floodingLow

Daytonmostly cold wavesLow

Newarkmostly cold wavesLow

Stenamostly cold wavesLow

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Dayton is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Dayton’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Dayton. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.