**An influx of Antarctic-origin polar air has driven a sharp temperature plunge across Buenos Aires on September 5, 2026, with official forecasts from the Servicio Meteorológico Nacional and multiple models converging on a minimum of 2–4 °C.** Clear skies and southwesterly winds of 15–30 km/h have enhanced radiative cooling and produced wind-chill values several degrees lower, aligning with the 99.6 % market-implied probability for 3 °C or below. Historical September climatology places typical minima near 9 °C, underscoring the anomaly. The outcome remains robust barring any late upward revision in official station readings, though urban heat-island effects or slight forecast timing shifts could theoretically push the recorded low above 3 °C.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Buenos Aires on September 5?
Lowest temperature in Buenos Aires on September 5?
3°C or below 99.6%
4°C <1%
5°C <1%
6°C <1%
$949 Vol.
$949 Vol.
Sep 5, 2026
3°C or below
100%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
<1%
8°C
<1%
9°C
<1%
10°C
<1%
11°C
<1%
12°C
<1%
13°C or higher
<1%
3°C or below 99.6%
4°C <1%
5°C <1%
6°C <1%
$949 Vol.
$949 Vol.
Sep 5, 2026
3°C or below
$235 Vol.
100%
4°C
$92 Vol.
<1%
5°C
$85 Vol.
<1%
6°C
$57 Vol.
<1%
7°C
$104 Vol.
<1%
8°C
$96 Vol.
<1%
9°C
$42 Vol.
<1%
10°C
$62 Vol.
<1%
11°C
$62 Vol.
<1%
12°C
$62 Vol.
<1%
13°C or higher
$52 Vol.
<1%
This market will resolve to the temperature range that contains the lowest 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 lowest 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.**An influx of Antarctic-origin polar air has driven a sharp temperature plunge across Buenos Aires on September 5, 2026, with official forecasts from the Servicio Meteorológico Nacional and multiple models converging on a minimum of 2–4 °C.** Clear skies and southwesterly winds of 15–30 km/h have enhanced radiative cooling and produced wind-chill values several degrees lower, aligning with the 99.6 % market-implied probability for 3 °C or below. Historical September climatology places typical minima near 9 °C, underscoring the anomaly. The outcome remains robust barring any late upward revision in official station readings, though urban heat-island effects or slight forecast timing shifts could theoretically push the recorded low above 3 °C.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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, 8:29 AM ET
Volume
$949End Date
Sep 5, 2026Market Opened
Sep 3, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest 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 lowest 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.**An influx of Antarctic-origin polar air has driven a sharp temperature plunge across Buenos Aires on September 5, 2026, with official forecasts from the Servicio Meteorológico Nacional and multiple models converging on a minimum of 2–4 °C.** Clear skies and southwesterly winds of 15–30 km/h have enhanced radiative cooling and produced wind-chill values several degrees lower, aligning with the 99.6 % market-implied probability for 3 °C or below. Historical September climatology places typical minima near 9 °C, underscoring the anomaly. The outcome remains robust barring any late upward revision in official station readings, though urban heat-island effects or slight forecast timing shifts could theoretically push the recorded low above 3 °C.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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
$949End Date
Sep 5, 2026Market Opened
Sep 3, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...**An influx of Antarctic-origin polar air has driven a sharp temperature plunge across Buenos Aires on September 5, 2026, with official forecasts from the Servicio Meteorológico Nacional and multiple models converging on a minimum of 2–4 °C.** Clear skies and southwesterly winds of 15–30 km/h have enhanced radiative cooling and produced wind-chill values several degrees lower, aligning with the 99.6 % market-implied probability for 3 °C or below. Historical September climatology places typical minima near 9 °C, underscoring the anomaly. The outcome remains robust barring any late upward revision in official station readings, though urban heat-island effects or slight forecast timing shifts could theoretically push the recorded low above 3 °C.
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