Latest numerical weather prediction models, including GFS runs, indicate a narrow range of possible daily maxima for Buenos Aires on September 20 centered near 21–24 °C, with modest spread arising from uncertain timing of increased cloud cover and light precipitation associated with a passing trough. Northerly flow is expected to advect mildly warmer air ahead of the system, while variable insolation and boundary-layer moisture will modulate peak temperatures; official Servicio Meteorológico Nacional guidance and ensemble guidance show limited diurnal heating potential under overcast conditions. With leading market-implied probabilities clustered between 23 °C and 25 °C, traders appear to be weighting the latest model consensus and historical September variability, where brief warming episodes can push readings a degree or two above climatological norms before any frontal cooling arrives. Updated model cycles and morning observations will likely narrow the distribution ahead of market resolution.
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 20?
Highest temperature in Buenos Aires on September 20?
24°C 26%
26°C 17%
23°C 16%
25°C 16%
NEW
NEW
Sep 20, 2026
18°C or below
<1%
19°C
<1%
20°C
1%
21°C
2%
22°C
8%
23°C
16%
24°C
26%
25°C
16%
26°C
17%
27°C
10%
28°C or higher
9%
24°C 26%
26°C 17%
23°C 16%
25°C 16%
NEW
NEW
Sep 20, 2026
18°C or below
$16 Vol.
<1%
19°C
$16 Vol.
<1%
20°C
$207 Vol.
1%
21°C
$9 Vol.
2%
22°C
$618 Vol.
8%
23°C
$896 Vol.
16%
24°C
$1,170 Vol.
26%
25°C
$2,084 Vol.
16%
26°C
$1,081 Vol.
17%
27°C
$1,537 Vol.
10%
28°C or higher
$2,018 Vol.
9%
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 20 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.Latest numerical weather prediction models, including GFS runs, indicate a narrow range of possible daily maxima for Buenos Aires on September 20 centered near 21–24 °C, with modest spread arising from uncertain timing of increased cloud cover and light precipitation associated with a passing trough. Northerly flow is expected to advect mildly warmer air ahead of the system, while variable insolation and boundary-layer moisture will modulate peak temperatures; official Servicio Meteorológico Nacional guidance and ensemble guidance show limited diurnal heating potential under overcast conditions. With leading market-implied probabilities clustered between 23 °C and 25 °C, traders appear to be weighting the latest model consensus and historical September variability, where brief warming episodes can push readings a degree or two above climatological norms before any frontal cooling arrives. Updated model cycles and morning observations will likely narrow the distribution ahead of market resolution.
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 20 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 18, 2026, 8:55 AM ET
Volume
$9,651End Date
Sep 20, 2026Market Opened
Sep 18, 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 20 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.Latest numerical weather prediction models, including GFS runs, indicate a narrow range of possible daily maxima for Buenos Aires on September 20 centered near 21–24 °C, with modest spread arising from uncertain timing of increased cloud cover and light precipitation associated with a passing trough. Northerly flow is expected to advect mildly warmer air ahead of the system, while variable insolation and boundary-layer moisture will modulate peak temperatures; official Servicio Meteorológico Nacional guidance and ensemble guidance show limited diurnal heating potential under overcast conditions. With leading market-implied probabilities clustered between 23 °C and 25 °C, traders appear to be weighting the latest model consensus and historical September variability, where brief warming episodes can push readings a degree or two above climatological norms before any frontal cooling arrives. Updated model cycles and morning observations will likely narrow the distribution ahead of market resolution.
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 20 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
$9,651End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Latest numerical weather prediction models, including GFS runs, indicate a narrow range of possible daily maxima for Buenos Aires on September 20 centered near 21–24 °C, with modest spread arising from uncertain timing of increased cloud cover and light precipitation associated with a passing trough. Northerly flow is expected to advect mildly warmer air ahead of the system, while variable insolation and boundary-layer moisture will modulate peak temperatures; official Servicio Meteorológico Nacional guidance and ensemble guidance show limited diurnal heating potential under overcast conditions. With leading market-implied probabilities clustered between 23 °C and 25 °C, traders appear to be weighting the latest model consensus and historical September variability, where brief warming episodes can push readings a degree or two above climatological norms before any frontal cooling arrives. Updated model cycles and morning observations will likely narrow the distribution ahead of market resolution.
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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