Recent forecasts from meteorological services project a high of 25–26°C in São Paulo on June 28, 2026, under mostly sunny skies with light winds, aligning with the market's leading outcomes at 25°C (20.5%) and 26°C (37.5%). June's subtropical winter climatology typically features daily maxima around 22–24°C, and recent observations show stable conditions without strong cold fronts or heat advection that could push extremes. Ensemble models exhibit modest spread around peak values due to minor uncertainties in boundary-layer mixing and insolation, supporting the clustered probabilities near 25–27°C while limiting odds for 28°C or higher. Updated guidance expected within 24 hours could refine resolution thresholds tied to official station maxima.
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 June 28?
27°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$71,588 Vol.
$71,588 Vol.
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C or higher
No
27°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$71,588 Vol.
$71,588 Vol.
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 26, 2026, 9:01 PM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent forecasts from meteorological services project a high of 25–26°C in São Paulo on June 28, 2026, under mostly sunny skies with light winds, aligning with the market's leading outcomes at 25°C (20.5%) and 26°C (37.5%). June's subtropical winter climatology typically features daily maxima around 22–24°C, and recent observations show stable conditions without strong cold fronts or heat advection that could push extremes. Ensemble models exhibit modest spread around peak values due to minor uncertainties in boundary-layer mixing and insolation, supporting the clustered probabilities near 25–27°C while limiting odds for 28°C or higher. Updated guidance expected within 24 hours could refine resolution thresholds tied to official station maxima.
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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