**Trader sentiment for São Paulo’s June 30 maximum temperature centers on ensemble forecast spread around the seasonal winter baseline of 21–23 °C.** With 26 °C and 27 °C holding nearly identical implied probabilities (37 % and 33 %), markets reflect tight model disagreement on daytime heating. Key drivers include the strength and timing of any Atlantic high-pressure ridge versus transient cold-air intrusions from the south, which control boundary-layer mixing and maximum temperatures. Urban heat-island effects and variable low-level moisture further modulate the diurnal range, while recent June observations show a slight cool anomaly that keeps higher outliers (28 °C+) at low odds. Updated model runs tonight and early June 30 observations will likely narrow the 25–27 °C window ahead of resolution.
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 30?
Highest temperature in Sao Paulo on June 30?
27°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$179,590 Vol.
$179,590 Vol.
Jun 30, 2026
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%
$179,590 Vol.
$179,590 Vol.
Jun 30, 2026
20°C or below
$66,405 Vol.
No
21°C
$66,819 Vol.
No
22°C
$2,933 Vol.
No
23°C
$2,136 Vol.
No
24°C
$4,302 Vol.
No
25°C
$7,179 Vol.
No
26°C
$4,584 Vol.
No
27°C
$9,287 Vol.
Yes
28°C
$6,203 Vol.
No
29°C
$5,612 Vol.
No
30°C or higher
$4,131 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Jun '26.
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.**Trader sentiment for São Paulo’s June 30 maximum temperature centers on ensemble forecast spread around the seasonal winter baseline of 21–23 °C.** With 26 °C and 27 °C holding nearly identical implied probabilities (37 % and 33 %), markets reflect tight model disagreement on daytime heating. Key drivers include the strength and timing of any Atlantic high-pressure ridge versus transient cold-air intrusions from the south, which control boundary-layer mixing and maximum temperatures. Urban heat-island effects and variable low-level moisture further modulate the diurnal range, while recent June observations show a slight cool anomaly that keeps higher outliers (28 °C+) at low odds. Updated model runs tonight and early June 30 observations will likely narrow the 25–27 °C window ahead of resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Jun '26.
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.
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 28, 2026, 11:01 PM ET
Volume
$179,590End Date
Jun 30, 2026Market Opened
Jun 28, 2026, 11:01 PM ETResolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Jun '26.
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.**Trader sentiment for São Paulo’s June 30 maximum temperature centers on ensemble forecast spread around the seasonal winter baseline of 21–23 °C.** With 26 °C and 27 °C holding nearly identical implied probabilities (37 % and 33 %), markets reflect tight model disagreement on daytime heating. Key drivers include the strength and timing of any Atlantic high-pressure ridge versus transient cold-air intrusions from the south, which control boundary-layer mixing and maximum temperatures. Urban heat-island effects and variable low-level moisture further modulate the diurnal range, while recent June observations show a slight cool anomaly that keeps higher outliers (28 °C+) at low odds. Updated model runs tonight and early June 30 observations will likely narrow the 25–27 °C window ahead of resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Jun '26.
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.
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.
Volume
$179,590End Date
Jun 30, 2026Market Opened
Jun 28, 2026, 11:01 PM ETResolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Trader sentiment for São Paulo’s June 30 maximum temperature centers on ensemble forecast spread around the seasonal winter baseline of 21–23 °C.** With 26 °C and 27 °C holding nearly identical implied probabilities (37 % and 33 %), markets reflect tight model disagreement on daytime heating. Key drivers include the strength and timing of any Atlantic high-pressure ridge versus transient cold-air intrusions from the south, which control boundary-layer mixing and maximum temperatures. Urban heat-island effects and variable low-level moisture further modulate the diurnal range, while recent June observations show a slight cool anomaly that keeps higher outliers (28 °C+) at low odds. Updated model runs tonight and early June 30 observations will likely narrow the 25–27 °C window ahead of resolution.
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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