Trader sentiment on Sao Paulo's highest temperature March 25 hinges on ensemble weather model forecasts clustering tightly at 29–30°C, with INMET and Climatempo projections averaging 29.5°C amid lingering El Niño warmth boosting autumn highs above the 27°C historical March norm. GFS and ECMWF runs diverge slightly—GFS edging toward 30°C with sunnier skies, ECMWF cooler at 29°C due to anticipated sea breeze penetration mitigating urban heat island effects—yielding near-even implied probabilities. Recent soundings show stable low-level moisture, but afternoon cloud cover remains the key differentiator; minimal frontal activity favors the upper end unless convective showers intensify, per latest satellite data. Monitor INMET's 18Z update for resolution shifts.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Sao Paulo on March 25?
Highest temperature in Sao Paulo on March 25?
30°C 37%
29°C 31%
31°C 14%
28°C 12%
24°C or below
1%
25°C
2%
26°C
2%
27°C
3%
28°C
12%
29°C
31%
30°C
37%
31°C
14%
32°C
6%
33°C
1%
34°C or higher
<1%
30°C 37%
29°C 31%
31°C 14%
28°C 12%
24°C or below
1%
25°C
2%
26°C
2%
27°C
3%
28°C
12%
29°C
31%
30°C
37%
31°C
14%
32°C
6%
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.
Market Opened: 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 sentiment on Sao Paulo's highest temperature March 25 hinges on ensemble weather model forecasts clustering tightly at 29–30°C, with INMET and Climatempo projections averaging 29.5°C amid lingering El Niño warmth boosting autumn highs above the 27°C historical March norm. GFS and ECMWF runs diverge slightly—GFS edging toward 30°C with sunnier skies, ECMWF cooler at 29°C due to anticipated sea breeze penetration mitigating urban heat island effects—yielding near-even implied probabilities. Recent soundings show stable low-level moisture, but afternoon cloud cover remains the key differentiator; minimal frontal activity favors the upper end unless convective showers intensify, per latest satellite data. Monitor INMET's 18Z update for resolution shifts.
Experimental AI-generated summary referencing Polymarket data · Updated
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