Recent cold front passage has shifted Buenos Aires into a cooler southwesterly flow, with strong winds of 25–35 km/h expected to enhance mixing and suppress daytime heating on September 21. Official guidance from sources including the Met Office, Yr.no, and WeatherBug converges on a maximum of 16–17°C under partly cloudy skies, roughly 2–4°C below September climatological averages near 19–20°C. Model differences center on exact frontal timing and boundary-layer moisture, which could nudge the peak by 1°C in either direction. With resolution imminent, trader positioning reflects this narrow scientific uncertainty between the two leading outcomes.
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 21?
Highest temperature in Buenos Aires on September 21?
17°C 36%
18°C 33%
16°C 16%
19°C 11%
NEW
NEW
Sep 21, 2026
11°C or below
<1%
12°C
<1%
13°C
2%
14°C
2%
15°C
5%
16°C
16%
17°C
36%
18°C
33%
19°C
11%
20°C
2%
21°C or higher
2%
17°C 36%
18°C 33%
16°C 16%
19°C 11%
NEW
NEW
Sep 21, 2026
11°C or below
$62 Vol.
<1%
12°C
$41 Vol.
<1%
13°C
$10 Vol.
2%
14°C
$14 Vol.
2%
15°C
$142 Vol.
5%
16°C
$160 Vol.
16%
17°C
$420 Vol.
36%
18°C
$105 Vol.
33%
19°C
$368 Vol.
11%
20°C
$93 Vol.
2%
21°C or higher
$44 Vol.
2%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 21 Sep '26.
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.Recent cold front passage has shifted Buenos Aires into a cooler southwesterly flow, with strong winds of 25–35 km/h expected to enhance mixing and suppress daytime heating on September 21. Official guidance from sources including the Met Office, Yr.no, and WeatherBug converges on a maximum of 16–17°C under partly cloudy skies, roughly 2–4°C below September climatological averages near 19–20°C. Model differences center on exact frontal timing and boundary-layer moisture, which could nudge the peak by 1°C in either direction. With resolution imminent, trader positioning reflects this narrow scientific uncertainty between the two leading outcomes.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 21 Sep '26.
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.
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 19, 2026, 8:55 AM ET
Volume
$1,458End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 21 Sep '26.
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.Recent cold front passage has shifted Buenos Aires into a cooler southwesterly flow, with strong winds of 25–35 km/h expected to enhance mixing and suppress daytime heating on September 21. Official guidance from sources including the Met Office, Yr.no, and WeatherBug converges on a maximum of 16–17°C under partly cloudy skies, roughly 2–4°C below September climatological averages near 19–20°C. Model differences center on exact frontal timing and boundary-layer moisture, which could nudge the peak by 1°C in either direction. With resolution imminent, trader positioning reflects this narrow scientific uncertainty between the two leading outcomes.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 21 Sep '26.
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.
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.
Volume
$1,458End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Recent cold front passage has shifted Buenos Aires into a cooler southwesterly flow, with strong winds of 25–35 km/h expected to enhance mixing and suppress daytime heating on September 21. Official guidance from sources including the Met Office, Yr.no, and WeatherBug converges on a maximum of 16–17°C under partly cloudy skies, roughly 2–4°C below September climatological averages near 19–20°C. Model differences center on exact frontal timing and boundary-layer moisture, which could nudge the peak by 1°C in either direction. With resolution imminent, trader positioning reflects this narrow scientific uncertainty between the two leading outcomes.
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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