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Natural hazards · Lemont

Lemont, IL natural hazards

Most of the natural-hazard damage FEMA expects in Lemont comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 6 claims here since 1982. 9 federal disasters brought FEMA money into town.

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

How exposed is Lemont?

26
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Lemont to be higher than in 26% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding42%Cold waves29%Tornadoes17%Heat waves8%Everything else4%
By hazard

What Lemont faces

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

Inland flooding

42% of expected damage
Below average · higher than 45% of U.S. places
Recorded about 6 times a year in the area

Cold waves

29% of expected damage
Well below average · higher than 22% of U.S. places
Recorded about 4 times a year in the area

Tornadoes

17% of expected damage
Well above average · higher than 81% of U.S. places

Heat waves

8% of expected damage
Well above average · higher than 79% of U.S. places
Recorded about 3 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Lemont flood?

Every paid claim on a federal flood insurance policy in Lemont, from FEMA’s records.

6paid claims since 1982
$34Kpaid to owners
0homes flooded more than once
19822026
of homes in flood zones
are insured
of all homes
are insured
No community discount. Lemont isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Cook County.
Disasters that hit Lemont

9 federal disasters brought FEMA money here

Disasters the President declared that paid out in Lemont itself: aid to households, or repair grants to the Village of Lemont.

Brought FEMA money into LemontDeclared for Cook County only
2024

Severe Storms, Tornadoes, Straight-Line Winds, and Floodng

8 households applied for aid $1K aid approved
2023

Severe Storms and Flooding

18 households applied for aid $30K aid approved
2013

Severe Storms, Straight-Line Winds, and Flooding

11 households applied for aid $14K aid approved
2011

Severe Winter Storm and Snowstorm

$59K to the Village of Lemont for repairs
2010

Severe Storms and Flooding

21 households applied for aid $56K aid approved
2008

Severe Storms and Flooding

1 household applied for aid $657 aid approved $3K to the Village of Lemont for repairs
2007

Severe Storms and Flooding

$6K to the Village of Lemont for repairs
2000

Illinois Winter Snow Storms

$49K to the Village of Lemont for repairs
1999

Il-Winter Storm 1/1/99

$46K to the Village of Lemont for repairs
Cook County has had 21 natural disasters declared since 1953, most often floods and severe storms.
Around Lemont

Lemont and the towns around it

Palos Park: Moderate, mostly inland floodingWillow Springs: High, mostly inland floodingWoodridge: Low, mostly inland floodingRomeoville: Very low, mostly inland floodingLemont: Low, mostly inland floodingDowners Grove: Low, mostly inland floodingPalos Heights: Very high, mostly inland floodingOrland Park: Low, mostly inland floodingPalos Hills: Very high, mostly inland floodingPalos: High, mostly inland floodingBurr Ridge: Moderate, mostly inland floodingHodgkins: Low, mostly inland floodingJustice: Very high, mostly inland floodingLyons: High, mostly inland floodingBolingbrook: Low, mostly inland floodingDarien: Low, mostly inland floodingDowners Grove: Low, mostly inland floodingLisle: Low, mostly inland floodingCrest Hill: Very low, mostly inland floodingHomer: Low, mostly inland floodingHomer Glen: Moderate, mostly inland floodingYork: Low, mostly inland floodingLisle: Low, mostly inland floodingWestmont: Very low, mostly inland floodingHinsdale: High, mostly inland floodingOak Brook: Low, mostly inland floodingLemont: Low, mostly inland flooding LemontPalos ParkWillow SpringsWoodridgeRomeovilleLemontDowners Grove
Very lowLowModerateHighVery high
Willow Springsmostly inland floodingHigh
Palos Parkmostly inland floodingModerate
Lemontmostly inland floodingLow
Downers Grovemostly inland floodingLow
Lemontmostly inland floodingLow
Woodridgemostly inland floodingLow
Romeovillemostly inland floodingVery low
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. Lemont covers 2 census tracts, combined by population.
Money that reached townFlood claims are matched to Lemont’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Village of Lemont. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Lemont total about $5.7M a year, counting buildings, people and crops.

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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01
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