The market-implied odds for Buenos Aires’ highest temperature on May 18 center on 15–17 °C because the latest ensemble forecasts from global and regional models show only modest day-to-day warming under a stable autumn high-pressure ridge. Surface analyses indicate light northerly flow advecting mild air while variable mid-level cloud cover and a weak frontal passage tonight keep maximum readings tightly clustered. Historical May climatology places the typical high near 18 °C, yet current model consensus points to slightly cooler conditions, with the narrow spread between 16 °C and 17 °C hinging on exact timing of any afternoon clearing. Overnight model updates and local observations will further narrow these probabilities 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 May 18?
16°C 34%
17°C 29%
15°C 24%
18°C 13%
10°C or below
<1%
11°C
<1%
12°C
<1%
13°C
1%
14°C
4%
15°C
24%
16°C
34%
17°C
29%
18°C
13%
19°C
1%
20°C or higher
1%
16°C 34%
17°C 29%
15°C 24%
18°C 13%
10°C or below
<1%
11°C
<1%
12°C
<1%
13°C
1%
14°C
4%
15°C
24%
16°C
34%
17°C
29%
18°C
13%
19°C
1%
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/SAEZThe market-implied odds for Buenos Aires’ highest temperature on May 18 center on 15–17 °C because the latest ensemble forecasts from global and regional models show only modest day-to-day warming under a stable autumn high-pressure ridge. Surface analyses indicate light northerly flow advecting mild air while variable mid-level cloud cover and a weak frontal passage tonight keep maximum readings tightly clustered. Historical May climatology places the typical high near 18 °C, yet current model consensus points to slightly cooler conditions, with the narrow spread between 16 °C and 17 °C hinging on exact timing of any afternoon clearing. Overnight model updates and local observations will further narrow these probabilities 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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