Official observations from São Paulo-Guarulhos International Airport and INMET data confirm a daily maximum of exactly 20°C on June 2, driving the 100% market-implied probability for that outcome. This aligns with climatological norms for early Southern Hemisphere winter, featuring stable subtropical high pressure, clear skies, and limited diurnal warming that kept highs near seasonal averages around 20–22°C. Recent model runs from global ensembles showed tight consensus on this range with minimal moisture or frontal activity to alter temperatures. The only realistic challenges would involve post-event data revisions or alternative station readings, though historical resolution patterns indicate low likelihood once official METAR reports finalize.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Sao Paulo on June 2?
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$38,354 Vol.
$38,354 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$38,354 Vol.
$38,354 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR.
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 until the first data point for the following date has been published on the resolution source.
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: May 31, 2026, 12:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR.
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 until the first data point for the following date has been published on the resolution source.
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.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from São Paulo-Guarulhos International Airport and INMET data confirm a daily maximum of exactly 20°C on June 2, driving the 100% market-implied probability for that outcome. This aligns with climatological norms for early Southern Hemisphere winter, featuring stable subtropical high pressure, clear skies, and limited diurnal warming that kept highs near seasonal averages around 20–22°C. Recent model runs from global ensembles showed tight consensus on this range with minimal moisture or frontal activity to alter temperatures. The only realistic challenges would involve post-event data revisions or alternative station readings, though historical resolution patterns indicate low likelihood once official METAR reports finalize.
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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