Measurable rainfall on August 27, 2026, was concentrated in the northeastern U.S. and parts of eastern Canada, driven by thunderstorm activity linked to residual tropical moisture and a passing frontal system. Official NWS observations recorded 0.24 inches at New York City’s Central Park, with similar convective showers affecting nearby areas, while Montreal logged 45.7 mm. In contrast, stations in San Antonio (trace amounts), Sacramento (none measurable), and much of the West Coast and southern Plains remained dry under high pressure and limited moisture. NOAA climatological reports and local summaries confirm these patterns, with resolution hinging on verified daily totals from primary weather stations rather than forecasts. Updated model verification and final NWS data releases in the days following provide the key inputs for market settlement.
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 27?
$6,096 Vol.
New York, NY
100%
Los Angeles, CA
-
Chicago, IL
98%
Houston, TX
99%
Dallas, TX
<1%
Phoenix, AZ
<1%
Philadelphia, PA
100%
Denver, CO
-
Washington, DC
100%
Atlanta, GA
100%
Miami, FL
100%
Seattle, WA
99%
Boston, MA
<1%
New Orleans, LA
100%
San Francisco, CA
<1%
$6,096 Vol.
New York, NY
100%
Los Angeles, CA
-
Chicago, IL
98%
Houston, TX
99%
Dallas, TX
<1%
Phoenix, AZ
<1%
Philadelphia, PA
100%
Denver, CO
-
Washington, DC
100%
Atlanta, GA
100%
Miami, FL
100%
Seattle, WA
99%
Boston, MA
<1%
New Orleans, LA
100%
San Francisco, CA
<1%
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 most recent CLI report published for the observation date. If multiple versions of the report are issued, the last version published before 11:59 PM ET on the day following the observation date 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: Aug 27, 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.
Resolution is based on the most recent CLI report published for the observation date. If multiple versions of the report are issued, the last version published before 11:59 PM ET on the day following the observation date 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...Measurable rainfall on August 27, 2026, was concentrated in the northeastern U.S. and parts of eastern Canada, driven by thunderstorm activity linked to residual tropical moisture and a passing frontal system. Official NWS observations recorded 0.24 inches at New York City’s Central Park, with similar convective showers affecting nearby areas, while Montreal logged 45.7 mm. In contrast, stations in San Antonio (trace amounts), Sacramento (none measurable), and much of the West Coast and southern Plains remained dry under high pressure and limited moisture. NOAA climatological reports and local summaries confirm these patterns, with resolution hinging on verified daily totals from primary weather stations rather than forecasts. Updated model verification and final NWS data releases in the days following provide the key inputs for market settlement.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions