Latest Servicio Meteorológico Nacional forecasts for May 18 point to a daytime maximum of 16–17 °C at Ministro Pistarini International Airport, the resolution station, under a stable post-frontal air mass with moderate southerly winds and partial cloud cover that limits solar heating. This keeps readings below the May climatological average of roughly 18 °C while aligning with ensemble guidance from GFS and ECMWF models that cluster within a narrow 1–2 °C uncertainty band. Persistent onshore flow and light winds prevent stronger warming, producing the tight market clustering around 16–17 °C as traders weigh these official projections against potential afternoon clearing or minor model shifts ahead of final observations.
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 May 18?
17°C 32%
16°C 21%
18°C 15%
15°C 10%
10°C or below
1%
11°C
1%
12°C
2%
13°C
4%
14°C
7%
15°C
10%
16°C
21%
17°C
26%
18°C
15%
19°C
2%
20°C or higher
1%
17°C 32%
16°C 21%
18°C 15%
15°C 10%
10°C or below
1%
11°C
1%
12°C
2%
13°C
4%
14°C
7%
15°C
10%
16°C
21%
17°C
26%
18°C
15%
19°C
2%
20°C or higher
1%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Minister Pistarini Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ar/ezeiza/SAEZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 16, 2026, 12:03 AM ET
Resolution Source
https://www.wunderground.com/history/daily/ar/ezeiza/SAEZThe resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Minister Pistarini Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ar/ezeiza/SAEZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/ar/ezeiza/SAEZLatest Servicio Meteorológico Nacional forecasts for May 18 point to a daytime maximum of 16–17 °C at Ministro Pistarini International Airport, the resolution station, under a stable post-frontal air mass with moderate southerly winds and partial cloud cover that limits solar heating. This keeps readings below the May climatological average of roughly 18 °C while aligning with ensemble guidance from GFS and ECMWF models that cluster within a narrow 1–2 °C uncertainty band. Persistent onshore flow and light winds prevent stronger warming, producing the tight market clustering around 16–17 °C as traders weigh these official projections against potential afternoon clearing or minor model shifts ahead of final observations.
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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