Trader sentiment clusters tightly around 28–30°C for Sao Paulo's March 23 high temperature, driven by the latest ECMWF and GFS model ensembles projecting peaks of 28.5–29.5°C amid persistent southerly winds moderating urban heat. INMET forecasts align closely at 29°C maximum, with minimal convective activity expected from Atlantic moisture, differentiating 29°C (26%) as the trader favorite over 28°C (25%) due to slight ensemble biases toward warmer outcomes from boundary layer mixing. Historical March averages hover at 27–28°C, but recent dry spells have nudged odds higher, while 30°C+ (33.5% combined) reflects outlier GFS runs; uncertainty stems from afternoon cloud cover variability resolving post-noon.
Resumo experimental gerado por IA com dados do Polymarket · AtualizadoHighest temperature in Sao Paulo on March 23?
Highest temperature in Sao Paulo on March 23?
29°C 26%
30°C 21%
27°C 16.0%
28°C 16%
22°C or below
1%
23°C
1%
24°C
2%
25°C
3%
26°C
9%
27°C
15%
28°C
25%
29°C
26%
30°C
21%
31°C
13%
32°C or higher
11%
29°C 26%
30°C 21%
27°C 16.0%
28°C 16%
22°C or below
1%
23°C
1%
24°C
2%
25°C
3%
26°C
9%
27°C
15%
28°C
25%
29°C
26%
30°C
21%
31°C
13%
32°C or higher
11%
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.
Mercado Aberto: Mar 19, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Trader sentiment clusters tightly around 28–30°C for Sao Paulo's March 23 high temperature, driven by the latest ECMWF and GFS model ensembles projecting peaks of 28.5–29.5°C amid persistent southerly winds moderating urban heat. INMET forecasts align closely at 29°C maximum, with minimal convective activity expected from Atlantic moisture, differentiating 29°C (26%) as the trader favorite over 28°C (25%) due to slight ensemble biases toward warmer outcomes from boundary layer mixing. Historical March averages hover at 27–28°C, but recent dry spells have nudged odds higher, while 30°C+ (33.5% combined) reflects outlier GFS runs; uncertainty stems from afternoon cloud cover variability resolving post-noon.
Resumo experimental gerado por IA com dados do Polymarket · Atualizado
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