Hail in St. Clair County, Missouri

Hail in St. Clair County, Missouri: 162 recorded events between 1955 and 2026. The strongest on record measured 3. That places the county #845 nationally and #43 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for hail in St. Clair County is the 2000s, when 71 of the county's 162 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the St. Clair County archive, hail makes up 39.3% of all recorded severe weather across 9 hazard types. Nationally the county sits at #845 for this hazard and #43 within Missouri, putting it in the 72.8 percentile of all U.S. counties.

May is the peak month for hail in St. Clair County with 55 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Thunderstorm Wind 151
• Flash Flood 52

How many hail events are on record in St. Clair County, Missouri?

162 hail events are recorded in St. Clair County between 1955 and 2026, causing 0 direct deaths.

What is the strongest hail recorded in St. Clair County?

The strongest hail on record in St. Clair County measured 3.

Where does the hail data for St. Clair County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.