Recent forecast guidance from multiple models points to a highest temperature near 18–19°C in Buenos Aires on September 9, driven by light northerly to northeasterly flow and partly to mostly cloudy skies under stable high pressure. This follows several cooler days with maxima around 13–16°C, as a mild air mass advances ahead of an approaching frontal boundary. Official National Meteorological Service outlooks and ensemble runs show limited warming potential, with afternoon peaks constrained by cloud cover and dew points in the 8–10°C range; minimal precipitation risk supports these values. Updated model runs over the next 24–48 hours will refine the exact maximum, particularly any late-day clearing that could allow brief additional warming toward 20°C. Historical September averages near 19°C provide context for the current mild spring pattern.
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?
19°C 36%
20°C 35%
18°C 14%
21°C 10%
13°C or below
1%
14°C
1%
15°C
2%
16°C
3%
17°C
10%
18°C
14%
19°C
24%
20°C
35%
21°C
10%
22°C
6%
23°C or higher
2%
19°C 36%
20°C 35%
18°C 14%
21°C 10%
13°C or below
1%
14°C
1%
15°C
2%
16°C
3%
17°C
10%
18°C
14%
19°C
24%
20°C
35%
21°C
10%
22°C
6%
23°C or higher
2%
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 forecast guidance from multiple models points to a highest temperature near 18–19°C in Buenos Aires on September 9, driven by light northerly to northeasterly flow and partly to mostly cloudy skies under stable high pressure. This follows several cooler days with maxima around 13–16°C, as a mild air mass advances ahead of an approaching frontal boundary. Official National Meteorological Service outlooks and ensemble runs show limited warming potential, with afternoon peaks constrained by cloud cover and dew points in the 8–10°C range; minimal precipitation risk supports these values. Updated model runs over the next 24–48 hours will refine the exact maximum, particularly any late-day clearing that could allow brief additional warming toward 20°C. Historical September averages near 19°C provide context for the current mild spring pattern.
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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