Forecast ensembles from INMET and global models like ECMWF indicate a São Paulo maximum temperature of 22-25°C on May 15, reflecting trader consensus amid overcast skies and likely afternoon rain or thunderstorms from a weak frontal system. May 2026 has trended 2°C cooler than the 23°C climatological average for mid-month highs, influenced by repeated cold air outbreaks from southern Brazil, including a record May minimum of 6.6°C earlier this week. Current observations show stable atmospheric conditions with moderating subtropical ridge, but cloud-induced suppression could trim peaks. Watch INMET's daily city forecasts and model refreshes through May 14 for shifts, as short-range uncertainty remains low.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Sao Paulo on May 15?
Highest temperature in Sao Paulo on May 15?
20°C or below 40%
21°C 26%
22°C 20%
23°C 8%
20°C or below
40%
21°C
26%
22°C
20%
23°C
8%
24°C
2%
25°C
2%
26°C
1%
27°C
1%
28°C
1%
29°C
1%
30°C or higher
<1%
20°C or below 40%
21°C 26%
22°C 20%
23°C 8%
20°C or below
40%
21°C
26%
22°C
20%
23°C
8%
24°C
2%
25°C
2%
26°C
1%
27°C
1%
28°C
1%
29°C
1%
30°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: May 13, 2026, 12:05 AM 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...Forecast ensembles from INMET and global models like ECMWF indicate a São Paulo maximum temperature of 22-25°C on May 15, reflecting trader consensus amid overcast skies and likely afternoon rain or thunderstorms from a weak frontal system. May 2026 has trended 2°C cooler than the 23°C climatological average for mid-month highs, influenced by repeated cold air outbreaks from southern Brazil, including a record May minimum of 6.6°C earlier this week. Current observations show stable atmospheric conditions with moderating subtropical ridge, but cloud-induced suppression could trim peaks. Watch INMET's daily city forecasts and model refreshes through May 14 for shifts, as short-range uncertainty remains low.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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