**Market-implied odds heavily favor a high of 25°C (53%) or 26°C (36.5%) for Buenos Aires on September 24, 2026, driven by model consensus on northerly advection of milder air masses and diurnal heating under partly cloudy to mostly sunny skies.** Official and ensemble forecasts from sources including Tomorrow.io (25.9°C), WeatherBug (~24°C/76°F), and others cluster in the 22–26°C range, with the Servicio Meteorológico Nacional (SMN) and similar agencies pointing to a peak near 21–24°C amid moderate north-northeast winds of 14–20 km/h and negligible precipitation risk. Stable high pressure supports gradual warming from morning lows around 11–13°C, though cloud cover variability and exact wind steering introduce minor uncertainty that keeps 27°C+ at just 6%. Traders are weighting the upper end of recent model runs, consistent with typical late-September climatology for the region.
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 24?
25°C 47%
26°C 43%
27°C 8%
24°C 3%
$21,089 Vol.
$21,089 Vol.
18°C or below
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
1%
24°C
3%
25°C
47%
26°C
43%
27°C
8%
28°C or higher
2%
25°C 47%
26°C 43%
27°C 8%
24°C 3%
$21,089 Vol.
$21,089 Vol.
18°C or below
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
1%
24°C
3%
25°C
47%
26°C
43%
27°C
8%
28°C or higher
2%
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 22, 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...**Market-implied odds heavily favor a high of 25°C (53%) or 26°C (36.5%) for Buenos Aires on September 24, 2026, driven by model consensus on northerly advection of milder air masses and diurnal heating under partly cloudy to mostly sunny skies.** Official and ensemble forecasts from sources including Tomorrow.io (25.9°C), WeatherBug (~24°C/76°F), and others cluster in the 22–26°C range, with the Servicio Meteorológico Nacional (SMN) and similar agencies pointing to a peak near 21–24°C amid moderate north-northeast winds of 14–20 km/h and negligible precipitation risk. Stable high pressure supports gradual warming from morning lows around 11–13°C, though cloud cover variability and exact wind steering introduce minor uncertainty that keeps 27°C+ at just 6%. Traders are weighting the upper end of recent model runs, consistent with typical late-September climatology for the region.
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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Frequently Asked Questions