Recent forecasts from multiple models indicate a high near 18°C for Buenos Aires on September 9, driven by northerly winds advecting milder air under partly cloudy skies with minimal precipitation risk. This consensus supports the market's leading outcomes at 19–20°C, as slight upward biases in afternoon heating or localized observations could push the daily maximum into that range. Stable high-pressure conditions and light easterly flow overnight limit cooling, aligning with typical early-spring variability where daily maxima often cluster within 2–3°C of guidance. Traders appear to weigh the latest model runs showing 17–19°C peaks most heavily, with lower probabilities assigned to outliers beyond 21°C absent any incoming warm advection.
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 9?
20°C 49%
19°C 26%
21°C 14%
18°C 8%
13°C or below
<1%
14°C
<1%
15°C
1%
16°C
2%
17°C
4%
18°C
8%
19°C
26%
20°C
49%
21°C
14%
22°C
2%
23°C or higher
1%
20°C 49%
19°C 26%
21°C 14%
18°C 8%
13°C or below
<1%
14°C
<1%
15°C
1%
16°C
2%
17°C
4%
18°C
8%
19°C
26%
20°C
49%
21°C
14%
22°C
2%
23°C or higher
1%
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 7, 2026, 8:55 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Recent forecasts from multiple models indicate a high near 18°C for Buenos Aires on September 9, driven by northerly winds advecting milder air under partly cloudy skies with minimal precipitation risk. This consensus supports the market's leading outcomes at 19–20°C, as slight upward biases in afternoon heating or localized observations could push the daily maximum into that range. Stable high-pressure conditions and light easterly flow overnight limit cooling, aligning with typical early-spring variability where daily maxima often cluster within 2–3°C of guidance. Traders appear to weigh the latest model runs showing 17–19°C peaks most heavily, with lower probabilities assigned to outliers beyond 21°C absent any incoming warm advection.
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