Recent forecasts from multiple models indicate a high near 12–13°C in Buenos Aires on September 22, driven by post-frontal southwesterly flow advecting cooler polar air after a warm, stormy period on the 20th. High pressure building behind the front supports partly to mostly cloudy skies with light winds and minimal precipitation, limiting daytime heating while preventing extreme overnight lows. Ensemble spreads and minor model disagreements around cloud timing and boundary-layer mixing explain the tight clustering of market-implied odds between 12°C and 15°C, with 14°C holding the highest probability as traders weigh the balance between residual warmth and the established cooler air mass. Updated NHC-style regional guidance and next model cycles will refine the exact maximum.
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 22?
14°C 31%
13°C 30%
15°C 23%
18°C or higher 22%
8°C or below
3%
9°C
4%
10°C
3%
11°C
10%
12°C
16%
13°C
30%
14°C
31%
15°C
23%
16°C
10%
17°C
1%
18°C or higher
22%
14°C 31%
13°C 30%
15°C 23%
18°C or higher 22%
8°C or below
3%
9°C
4%
10°C
3%
11°C
10%
12°C
16%
13°C
30%
14°C
31%
15°C
23%
16°C
10%
17°C
1%
18°C or higher
22%
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 20, 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 multiple models indicate a high near 12–13°C in Buenos Aires on September 22, driven by post-frontal southwesterly flow advecting cooler polar air after a warm, stormy period on the 20th. High pressure building behind the front supports partly to mostly cloudy skies with light winds and minimal precipitation, limiting daytime heating while preventing extreme overnight lows. Ensemble spreads and minor model disagreements around cloud timing and boundary-layer mixing explain the tight clustering of market-implied odds between 12°C and 15°C, with 14°C holding the highest probability as traders weigh the balance between residual warmth and the established cooler air mass. Updated NHC-style regional guidance and next model cycles will refine the exact maximum.
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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