Natural hazards · Marlborough

Marlborough, MO natural hazards

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

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

Expected damage

How exposed is Marlborough?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Marlborough to be higher than in 65% of U.S. communities, mostly from heat waves and inland flooding.

Heat waves35%Inland flooding27%Earthquakes23%Cold waves6%Everything else9%

By hazard

What Marlborough faces

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

Heat waves

35% of expected damage

Above average · higher than 64% of U.S. places

Recorded about 15 times a year in the area

Inland flooding

27% of expected damage

Above average · higher than 65% of U.S. places

Recorded about 3 times a year in the area

Earthquakes

23% of expected damage

Well above average · higher than 84% of U.S. places

Cold waves

6% of expected damage

Well below average · higher than 17% of U.S. places

Recorded about 2 times a year in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherWildfireLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Marlborough flood?

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

of homes in flood zones
are insured

of all homes
are insured

No community discount. Marlborough isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: St. Louis County.

Disasters that hit Marlborough

Federal disasters declared here

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

Brought FEMA money into MarlboroughDeclared for St. Louis County only

St. Louis County has had 29 natural disasters declared since 1953, most often severe storms and floods.

Around Marlborough

Marlborough and the towns around it

Very lowLowModerateHighVery high

Shrewsburymostly inland floodingHigh

Afftonmostly heat wavesHigh

Marlboroughmostly heat wavesHigh

Webster Grovesmostly heat wavesModerate

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. Marlborough 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 Marlborough’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Village of Marlborough. 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.