Hail History

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Hail history for Upper Alton, IL

Last hail within 10 milesMay 3, 20261 in (quarter)
Hail days, last 12 months3
Largest hail since 20062 in (hen egg)May 3, 2026
Hail days since 200650
Days with hail 1 inch or larger31
Tornadoes within 10 miles11
Damaging wind reports within 10 miles83

Hail has been reported within 10 miles of Upper Alton on 50 days since 2006. The largest stones measured 2 in (hen egg) on May 3, 2026. Hail is most common here in April and May.

Recent hail near Upper Alton

DateHail sizeWhereSource
May 3, 20262 in
hen egg		Fairmont, Milton, Godfrey
8 hail reports · closest near the center of Upper Alton		NOAA Storm Events
Apr 27, 20262 in
hen egg		Forest Homes, Alton, Cottage Hills
12 hail reports · closest near the center of Upper Alton		NOAA Storm Events
Mar 15, 20261 in
quarter		East Alton
1 hail report · closest 5 mi from Upper Alton		NOAA Storm Events
Aug 12, 20251 in
quarter		Milton
1 hail report · closest 3 mi from Upper Alton		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 Upper Alton by year

40640750860921041141231321411521621751819120212212324125326

When hail season peaks near Upper Alton

Of the 50 hail days since 2006, most fell in April (18) and May (12).

Jan2Feb5Mar18Apr12May4Jun3Jul2Aug1Sep3OctNovDec

Largest hail storms near Upper Alton

Apr 27, 2026 · 2 in (hen egg) · Forest Homes (3 mi from Upper Alton)

May 3, 2026 · 2 in (hen egg) · Fairmont (3 mi from Upper Alton)

Feb 16, 2006 · 1.75 in (golf ball) · Spanish Lake (8 mi from Upper Alton)

Mar 13, 2006 · 1.75 in (golf ball) · Spanish Lake (8 mi from Upper Alton)

Apr 3, 2007 · 1.75 in (golf ball) · Wood River (6 mi from Upper Alton)

Tornadoes within 10 miles of Upper Alton

DateRatingWherePath
Apr 27, 2026EF?Fort Bellefontaine
3 mi from Upper Alton		0.6 mi long, 10 yd wide
Mar 11, 2026EF1Moro
9 mi from Upper Alton		1.6 mi long, 25 yd wide
Mar 14, 2025EF2West Alton
7 mi from Upper Alton		4.2 mi long, 1,320 yd wide
Mar 14, 2025EF1Fairmont
3 mi from Upper Alton		2.5 mi long, 430 yd wide
Apr 18, 2024EF1Midway
10 mi from Upper Alton		3.1 mi long, 75 yd wide
May 31, 2013EF1Larimore
8 mi from Upper Alton		2.0 mi long, 50 yd wide
May 31, 2013EF3Oldenburg
7 mi from Upper Alton		8.6 mi long, 150 yd wide
Aug 31, 2012EF0St Thomas
9 mi from Upper Alton		0.2 mi long, 50 yd wide
May 4, 2007EF0Wood River
8 mi from Upper Alton		0.0 mi long, 40 yd wide
May 24, 2006F0Stl Rgnl Airport Airport
8 mi from Upper Alton		0.2 mi long, 50 yd wide
Apr 2, 2006F0Dorsey
9 mi from Upper Alton		5.0 mi long, 50 yd wide

Damaging thunderstorm winds near Upper Alton

83 reports of damaging thunderstorm wind within 10 miles of Upper Alton since 2006, on 61 days. The strongest measured gust was 84 mph on May 23, 2011.

DateStrongest gustWhereSource
Jul 27, 2026damage reportedGodfrey
1 wind report		NWS storm report (preliminary)
Mar 15, 202669 mph, estimatedBrighton
1 wind report		NOAA Storm Events
Mar 11, 202667 mph, measuredStl Rgnl Airport Airport
1 wind report		NOAA Storm Events
Aug 12, 202569 mph, estimatedMilton
1 wind report		NOAA Storm Events
Jul 16, 202558 mph, estimatedGodfrey
1 wind report		NOAA Storm Events
May 19, 202558 mph, estimatedMelville
1 wind report		NOAA Storm Events
Mar 14, 202558 mph, estimatedDelhi
1 wind report		NOAA Storm Events
Jul 29, 202364 mph, estimatedEast Alton
1 wind report		NOAA Storm Events
Apr 15, 202370 mph, estimatedStl Rgnl Airport Airport, Roxana
2 wind reports		NOAA Storm Events
Mar 31, 202372 mph, measuredStl Rgnl Airport Airport, Dorsey
2 wind reports		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 Upper Alton; 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 Upper Alton.

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