Short-range forecasts from the National Weather Service and ensemble models indicate regionally variable precipitation chances for September 22, 2026, driven by a frontal system and moisture patterns across the eastern and central U.S. Probabilities of precipitation exceed 70-80% in parts of the Southeast and mid-Atlantic with thunderstorms likely, while much of the Pacific Northwest and northern Plains show lower odds below 30%. Traders should monitor updated NWS probability of precipitation guidance, hourly model runs, and radar trends, as steering patterns and moisture transport can shift rain placement within the final 24 hours. Historical analogs for late September highlight typical variability in frontal timing and intensity.
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 22?
New York, NY
50%
Los Angeles, CA
24%
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
24%
$200 Vol.
New York, NY
50%
Los Angeles, CA
24%
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
24%
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 21, 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...Short-range forecasts from the National Weather Service and ensemble models indicate regionally variable precipitation chances for September 22, 2026, driven by a frontal system and moisture patterns across the eastern and central U.S. Probabilities of precipitation exceed 70-80% in parts of the Southeast and mid-Atlantic with thunderstorms likely, while much of the Pacific Northwest and northern Plains show lower odds below 30%. Traders should monitor updated NWS probability of precipitation guidance, hourly model runs, and radar trends, as steering patterns and moisture transport can shift rain placement within the final 24 hours. Historical analogs for late September highlight typical variability in frontal timing and intensity.
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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