A warm front lifting across the Northeast and a cold front trailing behind it are driving periods of rain and scattered thunderstorms across the mid-Atlantic and parts of the Southeast on September 20, with National Weather Service guidance showing near-100% rain chances in Philadelphia and vicinity alongside highs near 77°F. In the South and Florida, scattered afternoon storms tied to lingering humidity and weak steering flow add localized rainfall risk. Farther afield, a monsoon trough and southwest monsoon sustain heavy showers across much of Thailand and adjacent regions. Model consensus and official surface observations from NOAA and local meteorological agencies will determine exact locations meeting any rain threshold, with final data releases expected shortly after the calendar day ends.
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 September 20?
New York, NY
98%
Los Angeles, CA
4%
Chicago, IL
50%
Houston, TX
50%
Dallas, TX
40%
Phoenix, AZ
50%
Philadelphia, PA
100%
Denver, CO
21%
Washington, DC
67%
Atlanta, GA
22%
Miami, FL
88%
Seattle, WA
25%
Boston, MA
75%
New Orleans, LA
7%
San Francisco, CA
50%
$1,753 Vol.
New York, NY
98%
Los Angeles, CA
4%
Chicago, IL
50%
Houston, TX
50%
Dallas, TX
40%
Phoenix, AZ
50%
Philadelphia, PA
100%
Denver, CO
21%
Washington, DC
67%
Atlanta, GA
22%
Miami, FL
88%
Seattle, WA
25%
Boston, MA
75%
New Orleans, LA
7%
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.
This market will resolve according to the NWS Daily Climate Report as published by 2:00 PM ET on the day following the observation date. If multiple versions of the report are issued, the last version published before that time governs. If no figure has been published by that time, this market will resolve to "No".
The resolution source for this market is the NWS Daily Climate Report (CLI) for KNYC, published at https://forecast.weather.gov/product.php?site=NWS&product=CLI&issuedby=NYC.
Market Opened: Sep 19, 2026, 7:09 AM ET
Resolver
0x65070BE91...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.
This market will resolve according to the NWS Daily Climate Report as published by 2:00 PM ET on the day following the observation date. If multiple versions of the report are issued, the last version published before that time governs. If no figure has been published by that time, this market will resolve to "No".
The resolution source for this market is the NWS Daily Climate Report (CLI) for KNYC, published at https://forecast.weather.gov/product.php?site=NWS&product=CLI&issuedby=NYC.
Resolver
0x65070BE91...A warm front lifting across the Northeast and a cold front trailing behind it are driving periods of rain and scattered thunderstorms across the mid-Atlantic and parts of the Southeast on September 20, with National Weather Service guidance showing near-100% rain chances in Philadelphia and vicinity alongside highs near 77°F. In the South and Florida, scattered afternoon storms tied to lingering humidity and weak steering flow add localized rainfall risk. Farther afield, a monsoon trough and southwest monsoon sustain heavy showers across much of Thailand and adjacent regions. Model consensus and official surface observations from NOAA and local meteorological agencies will determine exact locations meeting any rain threshold, with final data releases expected shortly after the calendar day ends.
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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