**Traders have converged on a 13°C maximum temperature for Buenos Aires on September 5, 2026, with near-certainty implied by the 99.7% market price.** This reflects confirmed observations from the Servicio Meteorológico Nacional (SMN) and local stations, which recorded a daily high of exactly 13°C after a polar air mass brought southwest winds, clear to partly cloudy skies, low humidity around 40-50%, and a minimum of 6°C. The influx of Antarctic air suppressed temperatures well below seasonal norms, preventing any late-day warming. Supporting evidence includes real-time station data showing the peak occurring in the afternoon before cooling under increasing high pressure (around 1025-1030 hPa). Historical September averages for the city are higher (near 18-20°C), making this a notably cold outlier driven by the frontal passage. Upcoming resolution will depend on the final official SMN daily summary; minor risks include station-specific variations or definitional differences in the maximum (e.g., exact timing or sensor), though the broad consensus across sources makes significant deviation unlikely.
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 5?
Highest temperature in Buenos Aires on September 5?
13°C 99.7%
14°C <1%
7°C or below <1%
8°C <1%
$57,602 Vol.
$57,602 Vol.
Sep 5, 2026
7°C or below
<1%
8°C
<1%
9°C
<1%
10°C
<1%
11°C
<1%
12°C
<1%
13°C
100%
14°C
<1%
15°C
<1%
16°C
<1%
17°C or higher
<1%
13°C 99.7%
14°C <1%
7°C or below <1%
8°C <1%
$57,602 Vol.
$57,602 Vol.
Sep 5, 2026
7°C or below
$495 Vol.
<1%
8°C
$490 Vol.
<1%
9°C
$395 Vol.
<1%
10°C
$379 Vol.
<1%
11°C
$1,122 Vol.
<1%
12°C
$35,287 Vol.
<1%
13°C
$10,817 Vol.
100%
14°C
$4,934 Vol.
<1%
15°C
$2,563 Vol.
<1%
16°C
$605 Vol.
<1%
17°C or higher
$514 Vol.
<1%
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 5 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.**Traders have converged on a 13°C maximum temperature for Buenos Aires on September 5, 2026, with near-certainty implied by the 99.7% market price.** This reflects confirmed observations from the Servicio Meteorológico Nacional (SMN) and local stations, which recorded a daily high of exactly 13°C after a polar air mass brought southwest winds, clear to partly cloudy skies, low humidity around 40-50%, and a minimum of 6°C. The influx of Antarctic air suppressed temperatures well below seasonal norms, preventing any late-day warming.
Supporting evidence includes real-time station data showing the peak occurring in the afternoon before cooling under increasing high pressure (around 1025-1030 hPa). Historical September averages for the city are higher (near 18-20°C), making this a notably cold outlier driven by the frontal passage. Upcoming resolution will depend on the final official SMN daily summary; minor risks include station-specific variations or definitional differences in the maximum (e.g., exact timing or sensor), though the broad consensus across sources makes significant deviation unlikely.
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 5 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 3, 2026, 8:55 AM ET
Volume
$57,602End Date
Sep 5, 2026Market Opened
Sep 3, 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 5 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.**Traders have converged on a 13°C maximum temperature for Buenos Aires on September 5, 2026, with near-certainty implied by the 99.7% market price.** This reflects confirmed observations from the Servicio Meteorológico Nacional (SMN) and local stations, which recorded a daily high of exactly 13°C after a polar air mass brought southwest winds, clear to partly cloudy skies, low humidity around 40-50%, and a minimum of 6°C. The influx of Antarctic air suppressed temperatures well below seasonal norms, preventing any late-day warming.
Supporting evidence includes real-time station data showing the peak occurring in the afternoon before cooling under increasing high pressure (around 1025-1030 hPa). Historical September averages for the city are higher (near 18-20°C), making this a notably cold outlier driven by the frontal passage. Upcoming resolution will depend on the final official SMN daily summary; minor risks include station-specific variations or definitional differences in the maximum (e.g., exact timing or sensor), though the broad consensus across sources makes significant deviation unlikely.
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 5 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
$57,602End Date
Sep 5, 2026Market Opened
Sep 3, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...**Traders have converged on a 13°C maximum temperature for Buenos Aires on September 5, 2026, with near-certainty implied by the 99.7% market price.** This reflects confirmed observations from the Servicio Meteorológico Nacional (SMN) and local stations, which recorded a daily high of exactly 13°C after a polar air mass brought southwest winds, clear to partly cloudy skies, low humidity around 40-50%, and a minimum of 6°C. The influx of Antarctic air suppressed temperatures well below seasonal norms, preventing any late-day warming. Supporting evidence includes real-time station data showing the peak occurring in the afternoon before cooling under increasing high pressure (around 1025-1030 hPa). Historical September averages for the city are higher (near 18-20°C), making this a notably cold outlier driven by the frontal passage. Upcoming resolution will depend on the final official SMN daily summary; minor risks include station-specific variations or definitional differences in the maximum (e.g., exact timing or sensor), though the broad consensus across sources makes significant deviation unlikely.
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