Official Instituto Nacional de Meteorologia (INMET) observations confirm São Paulo's highest temperature on May 11 reached exactly 17°C at the primary urban station, reflecting trader consensus with 100% market-implied probability on this outcome. Persistent cloud cover and cold air advection from a recent frente fria suppressed solar heating, keeping daytime highs well below the climatological May average of 23°C amid stable high-pressure conditions noted in INMET's weekly outlook. This positioning aligns with pre-event model consensus from INMET and CPTEC/INPE projecting maxima near 17°C. Realistic challenges would require rare data revisions from instrument recalibration or alternative station records exceeding 17°C, but final INMET bulletins typically solidify such measurements.
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 May 11?
17°C 100.0%
15°C or below <1%
16°C <1%
18°C <1%
$82,654 Vol.
$82,654 Vol.
15°C or below
No
16°C
No
17°C
Yes
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
17°C 100.0%
15°C or below <1%
16°C <1%
18°C <1%
$82,654 Vol.
$82,654 Vol.
15°C or below
No
16°C
No
17°C
Yes
18°C
No
19°C
No
20°C
No
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 by the Forecast for the Sao Paulo-Guarulhos International Airport Station once information is finalized, 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 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 9, 2026, 1:30 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
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 Sao Paulo-Guarulhos International Airport Station once information is finalized, 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 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/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
Official Instituto Nacional de Meteorologia (INMET) observations confirm São Paulo's highest temperature on May 11 reached exactly 17°C at the primary urban station, reflecting trader consensus with 100% market-implied probability on this outcome. Persistent cloud cover and cold air advection from a recent frente fria suppressed solar heating, keeping daytime highs well below the climatological May average of 23°C amid stable high-pressure conditions noted in INMET's weekly outlook. This positioning aligns with pre-event model consensus from INMET and CPTEC/INPE projecting maxima near 17°C. Realistic challenges would require rare data revisions from instrument recalibration or alternative station records exceeding 17°C, but final INMET bulletins typically solidify such measurements.
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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