Ensemble forecasts from global models like GFS and ECMWF indicate a tight clustering of maximum temperatures around 27–28°C for São Paulo on April 2, driving the near-tie in trader odds at 29.5% each for those outcomes, amid typical early autumn conditions with highs averaging 26°C historically. Recent late-March stability under high-pressure systems has kept Southeast Brazil warmer than seasonal norms, but fading influences introduce uncertainty in cloud cover and sea breeze penetration, which could cap peaks at 26°C (18% implied probability) or push toward 28°C via enhanced solar heating. INMET guidance highlights low precipitation risk, though daily model updates may shift consensus; resolution hinges on official airport station readings.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Sao Paulo on April 2?
Highest temperature in Sao Paulo on April 2?
28°C 30%
27°C 30%
26°C 18%
30°C 11%
23°C or below
7%
24°C
9%
25°C
9%
26°C
18%
27°C
30%
28°C
30%
29°C
6%
30°C
11%
31°C
7%
32°C
6%
33°C or higher
2%
28°C 30%
27°C 30%
26°C 18%
30°C 11%
23°C or below
7%
24°C
9%
25°C
9%
26°C
18%
27°C
30%
28°C
30%
29°C
6%
30°C
11%
31°C
7%
32°C
6%
33°C or higher
2%
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: Mar 29, 2026, 1:53 PM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...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...Ensemble forecasts from global models like GFS and ECMWF indicate a tight clustering of maximum temperatures around 27–28°C for São Paulo on April 2, driving the near-tie in trader odds at 29.5% each for those outcomes, amid typical early autumn conditions with highs averaging 26°C historically. Recent late-March stability under high-pressure systems has kept Southeast Brazil warmer than seasonal norms, but fading influences introduce uncertainty in cloud cover and sea breeze penetration, which could cap peaks at 26°C (18% implied probability) or push toward 28°C via enhanced solar heating. INMET guidance highlights low precipitation risk, though daily model updates may shift consensus; resolution hinges on official airport station readings.
Experimental AI-generated summary referencing Polymarket data · Updated
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