Chicago, Illinois Hail Report and Map: July 27, 2026
Was there hail in Chicago, IL on July 27, 2026? Radar estimated hail up to 1.81 inches inside the town limits of Chicago on July 27, 2026 (Eastern time). Radar estimates of at least 0.5 inch covered 92% of the town. Across the report area, the maximum radar estimate was 4 inches. The strongest part of the swath was about 21 miles southwest of Chicago, IL. Radar detected hail aloft in this area between about 9:55 a.m. and 9:15 p.m. CT on July 27, 2026.
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Hail estimates at a glance
| Storm date (Eastern time) | July 27, 2026 (Monday) |
|---|---|
| Maximum radar estimate across the area | 4 inches; strongest part of the swath about 21 miles southwest of Chicago, IL |
| Maximum radar estimate inside Chicago | 1.81 inches |
| Share of Chicago with radar estimates of at least 0.5 inch | 92% |
| Approximate radar timing | Between about 9:55 a.m. and 9:15 p.m. CT on July 27, 2026 (Central time) |
| County coverage includes (0.5 inch or larger) | Cook County (840 sq mi), Will County (574 sq mi), Vilas County (497 sq mi), Outagamie County (486 sq mi), Gogebic County (470 sq mi) and Forest County (448 sq mi) |
| Area with radar estimates of 0.5 inch or larger | about 12,031 square miles |
| Area with radar estimates of 1 inch or larger | about 3,997 square miles |
| Source | NOAA MRMS radar hail estimates (MESH) |
Which towns had hail on July 27, 2026?
Radar estimated hail of at least 0.5 inch inside these town limits, using U.S. Census boundaries. Each percentage is the share of town area with those estimates.
| Town | County | Maximum radar estimate inside town limits | Town area with estimates of at least 0.5 inch |
|---|---|---|---|
| Orland Park, IL | Cook County | 4 inches | 100% |
| Homer Glen, IL | Will County | 4 inches | 87% |
| Woodridge, IL | DuPage County | 3.56 inches | 100% |
| Darien, IL | DuPage County | 3.38 inches | 100% |
| Bolingbrook, IL | Will County | 3.21 inches | 82% |
| Lockport, IL | Will County | 3.1 inches | 100% |
| Romeoville, IL | Will County | 2.85 inches | 77% |
| Downers Grove, IL | DuPage County | 2.54 inches | 100% |
| Tinley Park, IL | Cook County | 2.46 inches | 99% |
| Schaumburg, IL | Cook County | 2.36 inches | 100% |
| Elk Grove Village, IL | Cook County | 2.36 inches | 100% |
| Mokena, IL | Will County | 2.33 inches | 100% |
| Naperville, IL | DuPage County | 2.32 inches | 80% |
| Roselle, IL | DuPage County | 2.26 inches | 100% |
| Oak Forest, IL | Cook County | 2.22 inches | 100% |
| New Lenox, IL | Will County | 2.18 inches | 97% |
| Appleton, WI | Outagamie County | 2.14 inches | 100% |
| Lombard, IL | DuPage County | 2.06 inches | 100% |
| Frankfort, IL | Will County | 2.06 inches | 100% |
| Joliet, IL | Will County | 2 inches | 60% |
| Villa Park, IL | DuPage County | 2 inches | 100% |
| Addison, IL | DuPage County | 1.98 inches | 100% |
| Waukegan, IL | Lake County | 1.91 inches | 100% |
| Elmhurst, IL | DuPage County | 1.9 inches | 100% |
| Chicago, IL | Cook County | 1.81 inches | 92% |
| Oak Park, IL | Cook County | 1.8 inches | 100% |
| Cicero, IL | Cook County | 1.73 inches | 100% |
| Berwyn, IL | Cook County | 1.73 inches | 100% |
| Hoffman Estates, IL | Cook County | 1.69 inches | 99% |
| Glen Ellyn, IL | DuPage County | 1.64 inches | 100% |
| Wheaton, IL | DuPage County | 1.63 inches | 100% |
| Evanston, IL | Cook County | 1.62 inches | 100% |
| Kenosha, WI | Kenosha County | 1.61 inches | 78% |
| Streamwood, IL | Cook County | 1.61 inches | 100% |
| Highland Park, IL | Lake County | 1.6 inches | 100% |
| Hanover Park, IL | Cook County | 1.59 inches | 100% |
| Glendale Heights, IL | DuPage County | 1.54 inches | 100% |
| Oak Lawn, IL | Cook County | 1.52 inches | 100% |
| Carol Stream, IL | DuPage County | 1.52 inches | 100% |
| Oshkosh, WI | Winnebago County | 1.39 inches | 100% |
How big was the hail in Chicago?
Radar estimated hail up to 1.81 inches inside the town limits of Chicago. Among the listed towns, the highest estimate was 4 inches inside the limits of Orland Park. The maximum estimates in Joliet, Naperville and Kenosha were 2.32 inches or less. A town's maximum isn't an estimate for every home. Check the swath for estimates around an address.
Towns near the hail
The strongest part of the swath was within 15 miles of these towns. Distances and directions run from each town to that part of the swath.
- Goodings Grove, IL: strongest radar estimates about 1 miles northwest of town
What time did radar detect hail?
Radar detected hail aloft in this area between about 9:55 a.m. and 9:15 p.m. CT on July 27, 2026. We used 2,398 NOAA radar hail detections in this area to estimate the window. We trim outlying detection times when enough are available, then round down to five-minute marks. It doesn't give an arrival time at an address.
Data source and limits
We use NOAA's MRMS radar product MESH (Maximum Estimated Size of Hail) for hail-size estimates. Each town's figure is the maximum inside its Census town limits. The percentage is the town area with estimates of at least 0.5 inch. A town's maximum isn't an estimate for every home. Each storm date covers one calendar day in Eastern time. A late-evening storm west of the Eastern time zone can appear under two dates. Radar estimates don't confirm hail on the ground or roof damage. Hail of 0.5 to 0.75 inch can damage roofs, especially older roofs. An estimate below 1 inch doesn't rule out damage. Read how we calculate sizes and times.