Hail and tornadoes in Clayton County, IA

Since October 2020, radar estimated hail somewhere in Clayton County, IA on 48 days. The biggest estimate: 3 in or larger (teacup), on Tue, Feb 22, 2022. Hail was reported to the National Weather Service inside the county on 7 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail

since October 2020

1 inch or larger

days, estimated or reported

Largest radar estimate

3+ in

Tue, Feb 22, 2022

Largest reported

2.5 in

Tue, Apr 14, 2026

Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.

Radar-estimated hail on Tue, Feb 22, 2022 around the place, with the hail reported that day — Tue, Feb 22, 2022: radar-estimated hail around Clayton County, IA, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 125 hail reports in Clayton County, IA on 58 days, 2 of them 2 inches or larger. The largest: 2.5 in, near Monona, on Tue, Apr 14, 2026.

By decade: 1990s: 12 · 2000s: 60 · 2010s: 36 · 2020s: 17

Tornadoes since 1950

7 tornadoes have touched Clayton County, IA since 1950, none of them rated F3/EF3 or stronger. They killed 1 and injured 2.

Strongest

Wed, Jul 19, 2017 · EF1 · 5.78 mi long, 400 yd wide · near Giard · 1 death, 2 injuries
Sat, Mar 31, 2007 · EF1 · 4 mi long, 200 yd wide · near Edgewood
Fri, Mar 31, 2023 · EF0 · 1.21 mi long, 90 yd wide · near Garber
Thu, Sep 12, 2019 · EF0 · 4.22 mi long, 40 yd wide · near Gunder
Wed, May 29, 2013 · EF0 · 4.82 mi long, 10 yd wide · near Garnavillo

Most recent

Fri, Apr 17, 2026 · EFU · 0.57 mi long, 20 yd wide · near Hardin
Fri, Mar 31, 2023 · EF0 · 1.21 mi long, 90 yd wide · near Garber
Thu, Sep 12, 2019 · EF0 · 4.22 mi long, 40 yd wide · near Gunder
Wed, Jul 19, 2017 · EF1 · 5.78 mi long, 400 yd wide · near Giard · 1 death, 2 injuries
Wed, May 29, 2013 · EF0 · 4.82 mi long, 10 yd wide · near Garnavillo
Sat, Mar 31, 2007 · EF1 · 4 mi long, 200 yd wide · near Edgewood
Thu, May 10, 2001 · F0 · 1 mi long, 75 yd wide · near Edgewood

By decade: 2000s: 2 · 2010s: 3 · 2020s: 2

Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.

Every hail day since October 2020

Tue, Oct 13, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Sep 4, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (1 W Giard, IA)
- 1.5 in (Monona, IA)
Fri, Aug 21, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Aug 18, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jul 2, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (Guttenberg, IA)
- 1 in (Guttenberg, IA)
Wed, Jun 24, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, Jun 11, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jun 5, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Apr 27, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Apr 17, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Apr 14, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 2.5 in (Monona, IA)
Wed, Jan 14, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Sep 22, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Fri, Aug 29, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Aug 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Aug 9, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jul 11, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, Jul 3, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jun 29, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 23, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 11, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Apr 18, 2025
Reported in the county
- 1 in (McGregor, IA)
Thu, Apr 17, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (Osborne, IA)
- 1.25 in (2 WSW Osterdock, IA)
- 1.5 in (3 SE Guttenberg, IA)
- 1 in (Mcgregor, IA)
Thu, Mar 27, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Sep 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Sep 19, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Sun, Jul 21, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 15, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jun 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Sep 16, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Aug 11, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, Jul 13, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 24, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jun 2, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Apr 4, 2023
Reported in the county
- 1 in (STRAWBERRY POINT, IA)
Wed, Aug 3, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 5, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 4, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (LITTLEPORT, IA)
Tue, Jun 28, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jun 15, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, May 9, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Feb 22, 2022
Radar estimate anywhere in the county: 3 in or larger (teacup)
No hail reported in the county.
Fri, Aug 27, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Aug 10, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 27, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jun 17, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Apr 4, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Oct 22, 2020
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.

Check your own address →Weather in Clayton County, IA now →Get warned before the next storm →

Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.