Current National Weather Service and Weather Prediction Center outlooks highlight a moderate risk of excessive rainfall across portions of Indiana and Ohio on August 20, driven by organized thunderstorm activity and frontal boundaries, while scattered severe storms with flash-flood potential affect the Mid-Atlantic. Official quantitative precipitation forecasts and mesoscale discussions emphasize these areas due to atmospheric moisture, instability, and steering patterns favoring organized convection. Trader sentiment for specific city outcomes aligns with short-range model consensus and real-time radar trends from NOAA sources, though resolution hinges on verified daily totals at designated stations. Updated NWS briefings and next model runs will refine local probabilities as conditions evolve through the evening.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWhere will it rain on August 20?

New York, NY
90%

Los Angeles, CA
50%

Chicago, IL
50%

Houston, TX
50%

Dallas, TX
50%

Phoenix, AZ
50%

Philadelphia, PA
50%

Denver, CO
50%

Washington, DC
50%

Atlanta, GA
50%

Miami, FL
50%

Seattle, WA
50%

Boston, MA
50%

New Orleans, LA
50%

San Francisco, CA
50%
$79 Vol.

New York, NY
90%

Los Angeles, CA
50%

Chicago, IL
50%

Houston, TX
50%

Dallas, TX
50%

Phoenix, AZ
50%

Philadelphia, PA
50%

Denver, CO
50%

Washington, DC
50%

Atlanta, GA
50%

Miami, FL
50%

Seattle, WA
50%

Boston, MA
50%

New Orleans, LA
50%

San Francisco, CA
50%
Measurable precipitation means 0.01 inches or more as reported by the PRECIPITATION (IN) figure in the NWS Daily Climate Report (CLI) for the city's station.
A report of trace ("T") does not qualify.
The PRECIPITATION (IN) figure measures total liquid-equivalent precipitation and does not distinguish between precipitation types.
The observation period is the NWS climate day for KNYC: midnight to midnight local standard time. The final CLI report for a climate day is issued the following morning.
Resolution is based on the station's first published precipitation figure for the day. Subsequent revisions or corrections to the published data will not be considered; the first published value is final. If no figure has been published by 11:59 PM ET on the day following the observation date, this market will resolve to "No".
The resolution source for this market is the NWS Daily Climate Report (CLI) for KNYC.
Market Opened: Aug 20, 2026, 7:09 AM ET
Measurable precipitation means 0.01 inches or more as reported by the PRECIPITATION (IN) figure in the NWS Daily Climate Report (CLI) for the city's station.
A report of trace ("T") does not qualify.
The PRECIPITATION (IN) figure measures total liquid-equivalent precipitation and does not distinguish between precipitation types.
The observation period is the NWS climate day for KNYC: midnight to midnight local standard time. The final CLI report for a climate day is issued the following morning.
Resolution is based on the station's first published precipitation figure for the day. Subsequent revisions or corrections to the published data will not be considered; the first published value is final. If no figure has been published by 11:59 PM ET on the day following the observation date, this market will resolve to "No".
The resolution source for this market is the NWS Daily Climate Report (CLI) for KNYC.
Current National Weather Service and Weather Prediction Center outlooks highlight a moderate risk of excessive rainfall across portions of Indiana and Ohio on August 20, driven by organized thunderstorm activity and frontal boundaries, while scattered severe storms with flash-flood potential affect the Mid-Atlantic. Official quantitative precipitation forecasts and mesoscale discussions emphasize these areas due to atmospheric moisture, instability, and steering patterns favoring organized convection. Trader sentiment for specific city outcomes aligns with short-range model consensus and real-time radar trends from NOAA sources, though resolution hinges on verified daily totals at designated stations. Updated NWS briefings and next model runs will refine local probabilities as conditions evolve through the evening.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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Frequently Asked Questions