Latest ensemble forecasts from ECMWF and GFS models indicate a daytime maximum near 14–15°C in Buenos Aires on September 14 under mostly clear skies and light northerly winds, driving the tight 15–16°C market clustering. Subtle differences hinge on boundary-layer mixing and exact wind veering: a stronger northerly component could enhance adiabatic warming and push readings to 16°C, while any increase in low-level cloud or a brief southerly shift would cap the peak closer to 15°C. These outcomes sit below the long-term September average high of roughly 18°C because a persistent high-pressure ridge maintains stable, cooler conditions with minimal warm advection. Updated model runs and surface observations through the afternoon will refine the final maximum before 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 14?
16°C 38%
15°C 30%
17°C 13%
14°C 11%
10°C or below
<1%
11°C
<1%
12°C
2%
13°C
3%
14°C
11%
15°C
30%
16°C
38%
17°C
13%
18°C
6%
19°C
2%
20°C or higher
2%
16°C 38%
15°C 30%
17°C 13%
14°C 11%
10°C or below
<1%
11°C
<1%
12°C
2%
13°C
3%
14°C
11%
15°C
30%
16°C
38%
17°C
13%
18°C
6%
19°C
2%
20°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 12, 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...Latest ensemble forecasts from ECMWF and GFS models indicate a daytime maximum near 14–15°C in Buenos Aires on September 14 under mostly clear skies and light northerly winds, driving the tight 15–16°C market clustering. Subtle differences hinge on boundary-layer mixing and exact wind veering: a stronger northerly component could enhance adiabatic warming and push readings to 16°C, while any increase in low-level cloud or a brief southerly shift would cap the peak closer to 15°C. These outcomes sit below the long-term September average high of roughly 18°C because a persistent high-pressure ridge maintains stable, cooler conditions with minimal warm advection. Updated model runs and surface observations through the afternoon will refine the final maximum before 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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