Heavy Rain in Carroll County, Iowa

Heavy Rain in Carroll County, Iowa: 42 recorded events between 2008 and 2023. The strongest on record measured 0. That places the county #115 nationally and #30 statewide for this hazard.

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

The busiest decade for heavy rain in Carroll County is the 2010s, when 37 of the county's 42 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 Carroll County archive, heavy rain makes up 9.1% of all recorded severe weather across 8 hazard types. Nationally the county sits at #115 for this hazard and #30 within Iowa, putting it in the 95.0 percentile of all U.S. counties.

Jun is the peak month for heavy rain in Carroll County with 13 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 201
• Hail 143

How many heavy rain events are on record in Carroll County, Iowa?

42 heavy rain events are recorded in Carroll County between 2008 and 2023, causing 0 direct deaths.

What is the strongest heavy rain recorded in Carroll County?

The strongest heavy rain on record in Carroll County measured 0.

Where does the heavy rain data for Carroll 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.