Hail and tornadoes in St. Charles County, MO

Since October 2020, radar estimated hail somewhere in St. Charles County, MO on 69 days. The biggest estimate: 3 in or larger (teacup), on Fri, May 16, 2025. Hail was reported to the National Weather Service inside the county on 20 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

Fri, May 16, 2025

Largest reported

3 in

Thu, Mar 14, 2024

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 Fri, May 16, 2025 around the place, with the hail reported that day — Fri, May 16, 2025: radar-estimated hail around St. Charles County, MO, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 296 hail reports in St. Charles County, MO on 121 days, 26 of them 2 inches or larger. The largest: 4 in, near St Charles, on Wed, May 11, 2016.

By decade: 1990s: 21 · 2000s: 101 · 2010s: 101 · 2020s: 73

Tornadoes since 1950

24 tornadoes have touched St. Charles County, MO since 1950, 2 of them rated F3/EF3 or stronger. They killed 1 and injured 14.

Strongest

Fri, Dec 10, 2021 · EF3 · 16.08 mi long, 150 yd wide · near Femme Osage · 1 death, 2 injuries
Fri, May 31, 2013 · EF3 · 14.76 mi long, 950 yd wide · near Defiance · 8 injuries
Fri, Mar 14, 2025 · EF2 · 4.22 mi long, 1,320 yd wide · near West Alton
Sun, Jun 28, 2015 · EF2 · 2.26 mi long, 400 yd wide · near Peruque
Fri, Dec 10, 2021 · EF1 · 6.06 mi long, 50 yd wide · near Weldon

Most recent

Fri, Mar 14, 2025 · EF2 · 4.22 mi long, 1,320 yd wide · near West Alton
Mon, Nov 4, 2024 · EF0 · 4.94 mi long, 75 yd wide · near Foristell
Tue, May 7, 2024 · EF0 · 2.23 mi long, 50 yd wide · near Defiance
Fri, Dec 10, 2021 · EF1 · 6.06 mi long, 50 yd wide · near Weldon
Fri, Dec 10, 2021 · EF3 · 16.08 mi long, 150 yd wide · near Femme Osage · 1 death, 2 injuries
Tue, May 21, 2019 · EF1 · 4 mi long, 250 yd wide · near Augusta
Sat, Apr 29, 2017 · EF0 · 3.85 mi long, 100 yd wide · near Kampville
Mon, Mar 6, 2017 · EF1 · 3.15 mi long, 100 yd wide · near Foristell · 3 injuries
Tue, Apr 26, 2016 · EF0 · 0.32 mi long, 50 yd wide · near Cappeln
Sun, Jun 28, 2015 · EF2 · 2.26 mi long, 400 yd wide · near Peruque

By decade: 1990s: 2 · 2000s: 5 · 2010s: 12 · 2020s: 5

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

Every hail day since October 2020

Thu, Sep 17, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (1 SW Saint Paul, MO)
Sun, Aug 16, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Aug 12, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jul 10, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jul 5, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 4, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jun 25, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 31, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, May 3, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Mon, Apr 27, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (2 WNW O'Fallon, MO)
- 1.25 in (1 NNE O'Fallon, MO)
- 1 in (2 E O'Fallon, MO)
- 1.25 in (2 NNE O'Fallon, MO)
- 1.25 in (3 NE O'Fallon, MO)
- and 2 more
Sun, Apr 26, 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: 1 in or larger (quarter)
Reported in the county
- 1 in (2 W Harvester, MO)
- 1 in (3 NE Defiance, MO)
- 1 in (2 SW Saint Charles, MO)
Sat, Sep 20, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 18, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Aug 17, 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: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Aug 12, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Wed, Jul 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jul 6, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jun 17, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, May 19, 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: 3 in or larger (teacup)
Reported in the county
- 1 in (1 NE O'Fallon, MO)
- 2.5 in (2 W Harvester, MO)
- 2 in (Defiance, MO)
Wed, Apr 30, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (3 W Weldon Spring, MO)
Thu, Apr 10, 2025
Reported in the county
- 1 in (2 NE O'Fallon, MO)
Sun, Mar 30, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (1 N Orchard Farms, MO)
Fri, Mar 14, 2025
Reported in the county
- 1.25 in (1 W Harvester, MO)
Fri, Aug 30, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 29, 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: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 31, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 30, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (2 SSE Saint Charles, MO)
Mon, Jul 29, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jul 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jul 8, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 26, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 2.75 in (2 SE Saint Charles, MO)
- 1.5 in (2 NNW Bridgeton, MO)
Fri, May 24, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, May 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, May 4, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Apr 18, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Apr 16, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1.25 in (2 W Flint Hill, MO)
Mon, Apr 1, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (2 ENE Weldon Spring, MO)
- 1 in (1 SW Wentzville, MO)
Thu, Mar 14, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 3 in (Lake Saint Louis, MO)
- 3 in (2 E O'Fallon, MO)
- 2 in (1 SE Saint Paul, MO)
- 2 in (3 W Saint Paul, MO)
- 1 in (2 SW Flint Hill, MO)
Tue, Sep 26, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1.75 in (2 WNW Wentzville, MO)
Thu, Sep 21, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Aug 26, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Aug 11, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 29, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 17, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
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.
Fri, Jul 14, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jul 1, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jun 30, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, May 14, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, May 13, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (1 SSW SAINT PAUL, MO)
- 1.5 in (3 ESE FORISTELL, MO)
- 3 in (1 ESE SAINT CHARLES, MO)
Thu, Apr 20, 2023
Reported in the county
- 1 in (1 SSW WENTZVILLE, MO)
Sat, Apr 15, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 25, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Aug 3, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Jul 26, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 25, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, May 20, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (2 E FORISTELL, MO)
Fri, May 13, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Aug 26, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 23, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Aug 12, 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: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jul 9, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (3 WNW SAINT PAUL, MO)
Sat, Jun 19, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (SAINT CHARLES, MO)
Thu, May 27, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, May 16, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Mar 27, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1.75 in (2 WSW WELDON SPRING, MO)

Check your own address →Weather in St. Charles County, MO 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.