**Forecast uncertainty around an incoming cold front is keeping trader odds nearly even between a low of 7°C or below (48%) and 17°C or higher (48%) for Buenos Aires on September 21.** Official model runs show southwesterly winds strengthening to 30–40 km/h as cooler polar air advects northward behind a frontal boundary, with the overnight minimum expected near 6–11°C depending on exact frontal timing, cloud cover, and boundary-layer mixing. Stronger winds and clearer skies favor deeper cooling through advection and reduced downward longwave radiation, while any delay or warmer air entrainment could keep readings closer to seasonal norms of 8–12°C. Updated short-range guidance from agencies like the Servicio Meteorológico Nacional will clarify whether the coldest air arrives in time for the daily minimum window.
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 21?
Lowest temperature in Buenos Aires on September 21?
7°C or below 97%
17°C or higher 96%
8°C 40%
10°C 40%
NEW
NEW
Sep 21, 2026
7°C or below
97%
8°C
40%
9°C
22%
10°C
40%
11°C
21%
12°C
21%
13°C
21%
14°C
39%
15°C
39%
16°C
39%
17°C or higher
96%
7°C or below 97%
17°C or higher 96%
8°C 40%
10°C 40%
NEW
NEW
Sep 21, 2026
7°C or below
$0 Vol.
97%
8°C
$0 Vol.
40%
9°C
$0 Vol.
22%
10°C
$0 Vol.
40%
11°C
$0 Vol.
21%
12°C
$0 Vol.
21%
13°C
$0 Vol.
21%
14°C
$0 Vol.
39%
15°C
$0 Vol.
39%
16°C
$0 Vol.
39%
17°C or higher
$0 Vol.
96%
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 21 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.**Forecast uncertainty around an incoming cold front is keeping trader odds nearly even between a low of 7°C or below (48%) and 17°C or higher (48%) for Buenos Aires on September 21.** Official model runs show southwesterly winds strengthening to 30–40 km/h as cooler polar air advects northward behind a frontal boundary, with the overnight minimum expected near 6–11°C depending on exact frontal timing, cloud cover, and boundary-layer mixing. Stronger winds and clearer skies favor deeper cooling through advection and reduced downward longwave radiation, while any delay or warmer air entrainment could keep readings closer to seasonal norms of 8–12°C. Updated short-range guidance from agencies like the Servicio Meteorológico Nacional will clarify whether the coldest air arrives in time for the daily minimum window.
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 21 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 19, 2026, 8:29 AM ET
Volume
$0End Date
Sep 21, 2026Market Opened
Sep 19, 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 21 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.**Forecast uncertainty around an incoming cold front is keeping trader odds nearly even between a low of 7°C or below (48%) and 17°C or higher (48%) for Buenos Aires on September 21.** Official model runs show southwesterly winds strengthening to 30–40 km/h as cooler polar air advects northward behind a frontal boundary, with the overnight minimum expected near 6–11°C depending on exact frontal timing, cloud cover, and boundary-layer mixing. Stronger winds and clearer skies favor deeper cooling through advection and reduced downward longwave radiation, while any delay or warmer air entrainment could keep readings closer to seasonal norms of 8–12°C. Updated short-range guidance from agencies like the Servicio Meteorológico Nacional will clarify whether the coldest air arrives in time for the daily minimum window.
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 21 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
$0End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...**Forecast uncertainty around an incoming cold front is keeping trader odds nearly even between a low of 7°C or below (48%) and 17°C or higher (48%) for Buenos Aires on September 21.** Official model runs show southwesterly winds strengthening to 30–40 km/h as cooler polar air advects northward behind a frontal boundary, with the overnight minimum expected near 6–11°C depending on exact frontal timing, cloud cover, and boundary-layer mixing. Stronger winds and clearer skies favor deeper cooling through advection and reduced downward longwave radiation, while any delay or warmer air entrainment could keep readings closer to seasonal norms of 8–12°C. Updated short-range guidance from agencies like the Servicio Meteorológico Nacional will clarify whether the coldest air arrives in time for the daily minimum window.
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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