Latest ensemble forecasts from global models like ECMWF and GFS project Sao Paulo's March 22 high temperature at 30.2–30.8°C, fueling the razor-thin trader split between 30°C (41%) and 31°C (39%) outcomes. Official INMET guidance aligns at 31°C amid a high-pressure ridge promoting clear skies, subsidence, and minimal cloud interference, which could push peaks during afternoon hours via urban heat island amplification. Differentiating factors include slight model divergences on boundary layer mixing and southerly winds, with historical March averages of 28°C surpassed by recent warm anomalies. Traders eye evening updates, as 0.5°C margins hinge on precise measurement at stations like Mirante de Santana.
Resumo experimental gerado por IA com dados do Polymarket · AtualizadoHighest temperature in Sao Paulo on March 22?
Highest temperature in Sao Paulo on March 22?
30°C 42%
31°C 41%
32°C 9%
29°C 9%
$23,834 Vol.
$23,834 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
3%
29°C
9%
30°C
42%
31°C
41%
32°C
9%
33°C
3%
34°C or higher
<1%
30°C 42%
31°C 41%
32°C 9%
29°C 9%
$23,834 Vol.
$23,834 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
3%
29°C
9%
30°C
42%
31°C
41%
32°C
9%
33°C
3%
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 18, 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...Latest ensemble forecasts from global models like ECMWF and GFS project Sao Paulo's March 22 high temperature at 30.2–30.8°C, fueling the razor-thin trader split between 30°C (41%) and 31°C (39%) outcomes. Official INMET guidance aligns at 31°C amid a high-pressure ridge promoting clear skies, subsidence, and minimal cloud interference, which could push peaks during afternoon hours via urban heat island amplification. Differentiating factors include slight model divergences on boundary layer mixing and southerly winds, with historical March averages of 28°C surpassed by recent warm anomalies. Traders eye evening updates, as 0.5°C margins hinge on precise measurement at stations like Mirante de Santana.
Resumo experimental gerado por IA com dados do Polymarket · Atualizado
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