Hail History

Home › Illinois › St. Clair County › O'Fallon

Hail history for O'Fallon, IL

Last hail within 10 milesApr 27, 20261 in (quarter)
Hail days, last 12 months1
Largest hail since 20063.5 inApr 28, 2012
Hail days since 200667
Days with hail 1 inch or larger47
Tornadoes within 10 miles18
Damaging wind reports within 10 miles119

Hail has been reported within 10 miles of O'Fallon on 67 days since 2006. The largest stones measured 3.5 in on Apr 28, 2012. Hail is most common here in May and April.

O'Fallon ranks #107 for hail days among the 1,399 U.S. cities of 25,000 to 100,000 people. See the ranking →

Recent hail near O'Fallon

DateHail sizeWhereSource
Apr 27, 20261 in
quarter		Belleville
1 hail report · closest 8 mi from O'Fallon		NOAA Storm Events
Apr 2, 20251.75 in
golf ball		Willard, French Vlg
2 hail reports · closest 2 mi from O'Fallon		NOAA Storm Events
Mar 30, 20251 in
quarter		Atlee Ogles
1 hail report · closest 8 mi from O'Fallon		NOAA Storm Events
Mar 14, 20251.75 in
golf ball		Maryville, O Fallon, Collinsville
15 hail reports · closest near the center of O'Fallon		NOAA Storm Events

One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.

Hail days near O'Fallon by year

70650760830941031161221331421521661721841920121122423224325126

When hail season peaks near O'Fallon

Of the 67 hail days since 2006, most fell in May (18) and April (16).

1Jan2Feb5Mar16Apr18May8Jun7Jul2Aug3Sep3Oct1Nov1Dec

Largest hail storms near O'Fallon

Apr 28, 2012 · 3.5 in · Carbon (2 mi from O'Fallon)

National Weather Service description (English): There were numerous reports of large hail across O'Fallon. The largest hail stones were three and a half inches by two inch disc shaped stones. Baseball sized hail was reported at Scott Air Force Base.

Jun 8, 2009 · 2 in (hen egg) · Mascoutah (9 mi from O'Fallon)

Feb 28, 2017 · 2 in (hen egg) · Collinsville (9 mi from O'Fallon)

National Weather Service description (English): A wide swath of large hail, up to two inches in diameter, fell across Madison County from the Collinsville/Pontoon Beach area northeastward through Maryville, Glen Carbon, Edwardsville, Troy and Marine.

Apr 30, 2019 · 2 in (hen egg) · Collinsville (7 mi from O'Fallon)

National Weather Service description (English): Another severe storm moved through the southern half of Madison County dropping large hail between Collinsville and Troy. The largest hail stones reported were 2 inches in diameter.

Feb 16, 2006 · 1.75 in (golf ball) · Mascoutah (9 mi from O'Fallon)

Tornadoes within 10 miles of O'Fallon

DateRatingWherePath
Apr 27, 2026EF1Scott AFB Belle
6 mi from O'Fallon		5.8 mi long, 350 yd wide
Mar 14, 2025EF1Mascoutah
9 mi from O'Fallon		7.9 mi long, 700 yd wide
Mar 14, 2025EF1O Fallon
2 mi from O'Fallon		5.9 mi long, 450 yd wide
Mar 14, 2025EF0Black Jack
8 mi from O'Fallon		0.9 mi long, 25 yd wide
May 26, 2024EF0Summerfield
9 mi from O'Fallon		2.9 mi long, 285 yd wide
Apr 15, 2023EF0Signal Hill
9 mi from O'Fallon		0.6 mi long, 100 yd wide
Apr 15, 2023EF?Collinsville
8 mi from O'Fallon		0.2 mi long, 25 yd wide
Apr 15, 2023EF0Belleville
7 mi from O'Fallon		1.1 mi long, 90 yd wide
Apr 15, 2023EF1Belleville
6 mi from O'Fallon		3.0 mi long, 200 yd wide
May 19, 2022EF0Summerfield
9 mi from O'Fallon		0.2 mi long, 50 yd wide
Oct 13, 2014EF1Wilderman
8 mi from O'Fallon		1.4 mi long, 100 yd wide
Feb 27, 2011EF2Chinatown
10 mi from O'Fallon		2.7 mi long, 200 yd wide

Damaging thunderstorm winds near O'Fallon

119 reports of damaging thunderstorm wind within 10 miles of O'Fallon since 2006, on 92 days. The strongest measured gust was 72 mph on Apr 3, 2014.

DateStrongest gustWhereSource
Apr 27, 202658 mph, estimatedBelleville
1 wind report		NOAA Storm Events
Mar 15, 202660 mph, measuredCollinsville
1 wind report		NOAA Storm Events
Jul 6, 202574 mph, estimatedCaseyville, Lebanon
2 wind reports		NOAA Storm Events
May 16, 202569 mph, estimatedEast Swansea
1 wind report		NOAA Storm Events
Apr 20, 202569 mph, estimatedBelleville
1 wind report		NOAA Storm Events
Apr 2, 202560 mph, estimatedAtlee Ogles
1 wind report		NOAA Storm Events
Mar 14, 202590 mph, estimatedLebanon, O Fallon, Shiloh Station
8 wind reports		NOAA Storm Events
Apr 18, 202475 mph, estimatedTroy
1 wind report		NOAA Storm Events
Aug 25, 202370 mph, estimatedBelleville
1 wind report		NOAA Storm Events
Aug 6, 202362 mph, measuredScott AFB Belle
1 wind report		NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near O'Fallon; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Nearby cities

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then). Distances are measured from the center of O'Fallon.

Run a roofing company or a local news site? Show O'Fallon's hail history on your website with our free widget →