Recent forecasts from the Servicio Meteorológico Nacional and ensemble models such as ECMWF indicate a warming spring pattern for Buenos Aires on September 25, with maximum temperatures likely reaching 23–27°C under partly cloudy skies and light westerly to northwesterly winds. Northerly flow ahead of an approaching front is the main driver lifting daytime highs above seasonal averages, while limited cloud cover supports strong solar heating. Market-implied odds favor 30°C or higher at 46.5% because traders weigh potential model spreads, stronger warm advection, or late forecast shifts that could push peaks higher, even as most runs cluster near 25°C. Lower outcomes around 25–28°C capture the current consensus range, with probabilities near 20% each reflecting remaining uncertainty in boundary-layer mixing and exact frontal timing before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Buenos Aires on September 25?
28°C 26%
27°C 23%
29°C 22%
25°C 18%
20°C or below
2%
21°C
4%
22°C
4%
23°C
3%
24°C
3%
25°C
18%
26°C
15%
27°C
23%
28°C
26%
29°C
22%
30°C or higher
5%
28°C 26%
27°C 23%
29°C 22%
25°C 18%
20°C or below
2%
21°C
4%
22°C
4%
23°C
3%
24°C
3%
25°C
18%
26°C
15%
27°C
23%
28°C
26%
29°C
22%
30°C or higher
5%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=saez
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 23, 2026, 8:55 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=saez
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Recent forecasts from the Servicio Meteorológico Nacional and ensemble models such as ECMWF indicate a warming spring pattern for Buenos Aires on September 25, with maximum temperatures likely reaching 23–27°C under partly cloudy skies and light westerly to northwesterly winds. Northerly flow ahead of an approaching front is the main driver lifting daytime highs above seasonal averages, while limited cloud cover supports strong solar heating. Market-implied odds favor 30°C or higher at 46.5% because traders weigh potential model spreads, stronger warm advection, or late forecast shifts that could push peaks higher, even as most runs cluster near 25°C. Lower outcomes around 25–28°C capture the current consensus range, with probabilities near 20% each reflecting remaining uncertainty in boundary-layer mixing and exact frontal timing before resolution.
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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