Trader consensus favors 30°C (40.5% implied probability) as Sao Paulo's highest temperature on March 25, driven by the latest ECMWF and GFS model runs projecting peaks of 29-31°C amid persistent subtropical high pressure. Late-summer conditions in the Southern Hemisphere, combined with Sao Paulo's urban heat island effect, elevate highs above the March historical average of 28.5°C, while recent observations—upper 28°Cs on March 23—signal continued warmth without extreme heatwave escalation. INMET's afternoon forecast update could shift odds, as models diverge slightly on cloud cover influencing peak insolation, positioning 29°C and 31°C as strong contenders at 26.5% and 17%.
Resumo experimental gerado por IA com dados do Polymarket · AtualizadoHighest temperature in Sao Paulo on March 25?
Highest temperature in Sao Paulo on March 25?
30°C 41%
29°C 27%
31°C 17%
28°C 11%
$17,260 Vol.
$17,260 Vol.
24°C ou menos
<1%
25°C
<1%
26°C
1%
27°C
2%
28°C
11%
29°C
27%
30°C
41%
31°C
17%
32°C
4%
33°C
<1%
34°C or higher
<1%
30°C 41%
29°C 27%
31°C 17%
28°C 11%
$17,260 Vol.
$17,260 Vol.
24°C ou menos
<1%
25°C
<1%
26°C
1%
27°C
2%
28°C
11%
29°C
27%
30°C
41%
31°C
17%
32°C
4%
33°C
<1%
34°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 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 21, 2026, 6:01 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 consensus favors 30°C (40.5% implied probability) as Sao Paulo's highest temperature on March 25, driven by the latest ECMWF and GFS model runs projecting peaks of 29-31°C amid persistent subtropical high pressure. Late-summer conditions in the Southern Hemisphere, combined with Sao Paulo's urban heat island effect, elevate highs above the March historical average of 28.5°C, while recent observations—upper 28°Cs on March 23—signal continued warmth without extreme heatwave escalation. INMET's afternoon forecast update could shift odds, as models diverge slightly on cloud cover influencing peak insolation, positioning 29°C and 31°C as strong contenders at 26.5% and 17%.
Resumo experimental gerado por IA com dados do Polymarket · Atualizado
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