Heavy Rain in Mercer County, New Jersey

Heavy Rain in Mercer County, New Jersey: 42 recorded events between 1997 and 2022. The strongest on record measured 0. That places the county #115 nationally and #11 statewide for this hazard.

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

The busiest decade for heavy rain in Mercer County is the 2000s, when 19 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 Mercer County archive, heavy rain makes up 7.8% of all recorded severe weather across 8 hazard types. Nationally the county sits at #115 for this hazard and #11 within New Jersey, putting it in the 95.0 percentile of all U.S. counties.

Jan is the peak month for heavy rain in Mercer County with 6 recorded events, while Feb 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 269
• Flash Flood 74
• Hail 63

How many heavy rain events are on record in Mercer County, New Jersey?

42 heavy rain events are recorded in Mercer County between 1997 and 2022, causing 0 direct deaths.

What is the strongest heavy rain recorded in Mercer County?

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

Where does the heavy rain data for Mercer 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.