Hail and tornadoes in Fond du Lac County, WI

Since January 2021, radar estimated hail somewhere in Fond du Lac County, WI on 47 days. The biggest estimate: 2 in or larger (hen egg), on Wed, Jul 1, 2026. Hail was reported to the National Weather Service inside the county on 5 days.

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

Days with hail

since January 2021

1 inch or larger

days, estimated or reported

Largest radar estimate

2+ in

Wed, Jul 1, 2026

Largest reported

3.25 in

Wed, Jul 1, 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.

Hail on record since 1955

NOAA's Storm Events database lists 87 hail reports in Fond du Lac County, WI on 44 days, 12 of them 2 inches or larger. The largest: 3.25 in, near Hamilton, on Wed, Jul 1, 2026.

By decade: 2000s: 27 · 2010s: 28 · 2020s: 32

Tornadoes since 1950

23 tornadoes have touched Fond du Lac County, WI since 1950, 2 of them rated F3/EF3 or stronger.

Strongest

Wed, Jun 23, 2004 · F3 · 7.2 mi long, 400 yd wide · near Alto
Wed, Jun 23, 2004 · F3 · 3.6 mi long, 300 yd wide · near Alto
Tue, Aug 28, 2018 · EF1 · 4.01 mi long, 100 yd wide · near Dotyville
Tue, Aug 28, 2018 · EF1 · 0.72 mi long, 150 yd wide · near South Byron
Tue, Aug 28, 2018 · EF1 · 0.92 mi long, 100 yd wide · near South Byron

Most recent

Wed, Jun 10, 2026 · EF0 · 0.94 mi long, 75 yd wide · near Eden
Tue, Aug 28, 2018 · EF0 · 0.04 mi long, 80 yd wide · near Dundee
Tue, Aug 28, 2018 · EF1 · 4.01 mi long, 100 yd wide · near Dotyville
Tue, Aug 28, 2018 · EF1 · 4.47 mi long, 90 yd wide · near Eden
Tue, Aug 28, 2018 · EF1 · 2.83 mi long, 100 yd wide · near Byron
Tue, Aug 28, 2018 · EF1 · 0.72 mi long, 150 yd wide · near South Byron
Tue, Aug 28, 2018 · EF1 · 0.15 mi long, 80 yd wide · near South Byron
Tue, Aug 28, 2018 · EF1 · 0.92 mi long, 100 yd wide · near South Byron
Tue, Aug 28, 2018 · EF0 · 0.14 mi long, 50 yd wide · near Oakfield
Tue, Aug 28, 2018 · EF1 · 4.44 mi long, 100 yd wide · near Ladoga

By decade: 2000s: 7 · 2010s: 15 · 2020s: 1

Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.

Every hail day since January 2021

Fri, Sep 25, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Sep 3, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Wed, Sep 2, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Sep 1, 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: 0.75 in or larger (penny)
Reported in the county
- 1 in (1 SSE Fond Du Lac, WI)
Mon, Jul 27, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, Jul 16, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 1, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 2 in (2 ENE Lamartine, WI)
- 1 in (3 E Lamartine, WI)
- 2 in (2 SSW Fond Du Lac, WI)
- 1.75 in (3 SSW Fond Du Lac, WI)
- 1 in (2 S Fond Du Lac, WI)
- and 14 more
Wed, Jun 24, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jun 16, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 17, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, May 15, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Apr 14, 2026
Reported in the county
- 1 in (Ripon, WI)
Mon, Apr 13, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Mar 31, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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.
Fri, May 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, May 15, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1.25 in (1 N Campbellsport, WI)
Fri, Sep 13, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Aug 27, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 8, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jun 25, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 24, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, May 20, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 3, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 25, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jul 22, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jul 16, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 17, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Sat, Jun 3, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
Wed, May 31, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Sep 20, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 23, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Sep 28, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Sep 15, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Sep 7, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1.75 in (FOND DU LAC, WI)
- 3 in (2 NNE NORTH FOND DU LAC, WI)
- 2 in (RIPON, WI)
Sat, Aug 28, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Aug 24, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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.
Sat, Aug 7, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Aug 6, 2021
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Wed, Jul 28, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 24, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jul 3, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, Jun 24, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jun 8, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.

Check your own address →Weather in Fond du Lac County, WI 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.