⌁ HailEvidence NWS storm records · per-address verification

HailEvidence → hail history by county → Iowa → Clayton County

Hail dates in Clayton County, Iowa

The National Weather Service has recorded hail in Clayton County on 16 days since 2016 (33 separate reports, 23 of them quarter-size or larger). The largest stone on record was 2.50" (tennis ball) on April 14, 2026; the most recent hail was April 14, 2026. Every row below is an official NWS record. Check hail at your exact address, free →

Every hail day in Clayton County since 2016

One row per day the NWS logged hail somewhere in the county. The narrative names the town; the free check below narrows it to your address.

DateLargest hailReportsNWS narrative
2026-04-14 2.50" (tennis ball) 1 The public reported tennis ball sized hail near Monona.
2025-04-18 1.50" (ping pong ball) 5 The public reported ping pong ball sized hail 2 miles south-southeast of Guttenberg.
2024-07-15 0.88" (nickel) 1 The public reported nickel sized hail 2 miles west of Cassville.
2023-04-04 1.00" (quarter) 1 Up to quarter sized hail fell in Strawberry Point.
2022-07-04 1.00" (quarter) 2 Quarter sized hail was reported in Littleport.
2022-06-28 0.88" (nickel) 2 —
2020-03-28 1.00" (quarter) 3 Quarter sized hail fell in Elkader.
2019-05-05 1.00" (quarter) 1 Quarter sized hail fell in Elkader.
2018-08-28 0.88" (nickel) 1 —
2018-07-13 1.50" (ping pong ball) 1 Walnut sized hail was reported in Millville.
2018-04-13 0.75" (penny) 1 —
2017-07-12 1.75" (golf ball) 3 Golf ball sized hail was reported south of Osterdock.
2017-07-11 1.75" (golf ball) 4 Golf ball sized hail fell north of Garber.
2017-05-15 1.25" (half dollar) 1 Half dollar sized hail fell in Monona.
2017-03-23 1.75" (golf ball) 4 Golf ball sized hail was reported in Strawberry Point.
2016-09-19 1.75" (golf ball) 2 Golfball sized hail fell southeast of Garnavillo.

Hail days by year

YearHail daysReportsLargest
2026112.50" (tennis ball)
2025151.50" (ping pong ball)
2024110.88" (nickel)
2023111.00" (quarter)
2022241.00" (quarter)
2020131.00" (quarter)
2019111.00" (quarter)
2018331.50" (ping pong ball)
20174121.75" (golf ball)
2016121.75" (golf ball)

Damaging wind in Clayton County

Thunderstorm wind of 58 mph or more (the NWS severe threshold), 40 reports since 2016, strongest 75 mph. 4 tornadoes recorded in the county in the same period. Wind and tornado records are included in the extended report.

DatePeak gustReportsNWS narrative
2024-07-1575 mph1Law enforcement estimated a 75 mph wind gust near North Buena Vista.
2017-03-0672 mph4A 73 mph wind gust was measured south of Littleport.
2026-05-1570 mph2A personal weather station reported a 70 mph wind gust 2 mile southeast of Watson.
2017-05-1770 mph5An estimated 70 mph wind gust occurred in Garber.
2024-06-1269 mph2Trees and power lines were reported down.
2024-05-2166 mph1The public measured a wind gust of 66 mph in Monona.
2022-07-2366 mph1Power lines were blown down northeast of Strawberry Point.
2019-06-3064 mph4Trees were blown down west of Farmersburg.

Was hail recorded at your Clayton County address? Check free

Type a street address — or just a ZIP code. We measure it against every hail event the National Weather Service recorded in the last 10 years and show you how many fall within 1, 3 and 10 miles — free, instantly, nothing stored. Rural property with no street address? Enter coordinates as 44.05, -107.31.

Address lookup by the U.S. Census Bureau geocoder. Records: NOAA NCEI Storm Events (final) plus SPC preliminary reports for storms newer than the latest compile — see methodology.

Need it in writing for a claim?

The verification report lists every NWS hail (and, in the extended version, wind and tornado) record within 1, 3 and 10 miles of one address, each linked to its official source, with the disputed date called out in plain English. Adjusters can verify every line.

$29standard report

10-year hail history for one address + the disputed-date finding.

$49extended report

15-year window, wind & tornado records, plus a drafted claim-appeal letter.

Questions

What date did hail last hit Clayton County?

April 14, 2026, per the NWS Storm Events record. The largest since 2016 was 2.50" (tennis ball) on April 14, 2026.

Does a county record prove hail at my house?

No. NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure. The free check above shows what was recorded near your specific address, with distances.

Nearby counties

Grant County, WI (32 mi) · Fayette County, IA (33 mi) · Dubuque County, IA (36 mi) · Buchanan County, IA (39 mi) · Jones County, IA (50 mi) · Chickasaw County, IA (53 mi) · Bremer County, IA (56 mi) · Vernon County, WI (56 mi)

See also: Iowa hail history by city · all counties

Honest limits: NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure. Counties are attributed by the NWS county code on each report; zone-coded wind reports are not counted here.