Storm risk in Will County, Illinois
FEMA rates Will County Relatively High for natural-hazard risk overall, 87th of 3,144 rated counties. For a roof the three that matter are hail (Relatively Low), strong wind (Relatively Low) and tornado (Very High). NOAA logged 111 hail reports here from 2014 to June 2026.
FEMA National Risk Index, version December 2025, retrieved October 8, 2026. Planning-level county ratings.
Each dot is the county’s score from 0 to 100 against all rated U.S. counties; the bar colour is FEMA’s rating band.
Hazard by hazard
| Hazard | Rating | Score (0 to 100) | Rank in U.S. | Rank in IL | Expected yearly loss |
|---|---|---|---|---|---|
| Overall | Relatively High | 97.3 | 87 | 3 of 102 | $222,037,838buildings |
| Hail | Relatively Low | 60.6 | 1,241 | 53 of 102 | $470,087buildings |
| Strong wind | Relatively Low | 50.8 | 1,547 | 78 of 102 | $357,641buildings |
| Tornado | Very High | 99.2 | 25 | 3 of 102 | $63,112,921all exposure |
Rank 1 is the highest score. Expected annual loss is a county total in dollars per year, not a figure per home; the overall, hail and wind rows count buildings only, the tornado row all exposure.
Will County in plain numbers
- FEMA's overall rating for Will County is Relatively High, score 97.3 of 100, 87th of 3,144 rated counties.
- Hail: Relatively Low (score 60.6), 1241st nationwide and 53rd of 102 counties in Illinois.
- Expected yearly hail loss to buildings: $470,087 for the whole county, about $2.24 per $1 million of building value.
- NRI's hail record averages 3.9 hail events a year in the county.
- Strong wind: Relatively Low (score 50.8), 1547th nationwide; expected yearly loss to buildings $357,641, about $1.70 per $1 million of building value.
- Tornado: Very High (score 99.2), 25th nationwide; total expected yearly loss $63,112,921.
- Buildings in the county are valued at 210.3 billion dollars in the index; population 696,135.
- Social vulnerability is rated Very Low and community resilience Very High.
- NOAA logged 111 hail reports in Will County from 2014 to June 2026; hail of 1 inch or more fell on 36 days and the largest stone was 3 inches.
- 1 of our cities is in the county: Joliet.
- 30 ZIP Code Tabulation Areas have more than half of their land area in Will County.
- Our guide range for a 2,000 sq ft asphalt roof in Joliet is $6,790 to $15,035.
- NOAA lists 38 tornado tracks in the county since 2014.
Where large hail was reported
FEMA scores the county as a whole. NOAA’s storm reports show where inside it the big stones fell.
Reported hail locations, Will County
- 761 to 1.74 in
- 101.75 to 2.74 in, golf ball to tennis ball
- 12.75 in and up, baseball
Largest plotted stone: 3 in. Bigger dots are bigger stones.
87 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.
Sources: NOAA, Census county outlineCities and ZIP areas in Will County
1 city in this county is on PickARoofer. ZIP Code Tabulation Areas are Census shapes that approximate ZIP codes; where we have a city’s ZIPs, the share is the part of each area’s land that lies in this county. 30 such areas have more than half their land here.
| City | ZIP areas (share of land in the county) | Pages |
|---|---|---|
| Joliet | 60451 (100%), 60452 (0%), 60474 (0%), 60453 (0%) | Roofers |
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How high is storm risk in Will County?
FEMA's National Risk Index rates Will County Relatively High overall. By peril: hail Relatively Low, strong wind Relatively Low, tornado Very High. The highest-scoring of the three for this county is tornado (score 99.2).
How many hail reports has NOAA logged in Will County?
111 reports between 2014 and June 2026 in NOAA's Storm Events Database. A report is one entry for one storm in one county, so counts follow where people live as well as where hail fell.
What does expected annual loss mean?
It is FEMA's estimate of the average yearly loss from a hazard, in dollars, summed over the county. It is a county total, not a figure per home, and it is built for comparing counties, not for pricing one house.
Does a high rating mean my roof will be damaged?
No. The index compares counties at planning level. It cannot say what will happen on your street. After a storm, a roof inspection is the only way to know.
How does Will County compare with the rest of Illinois?
For hail it ranks 53rd of 102 rated counties in the state; for strong wind 78th of 102; for tornado 3rd of 102.
Sources: FEMA National Risk Index, version December 2025, retrieved October 8, 2026; NOAA Storm Events Database; Census Bureau ZCTA-to-county relationship file (2020). This product uses the Federal Emergency Management Agency's National Risk Index dataset but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Planning-level information, not an inspection and not insurance advice.