Sao Paulo's subtropical winter climate, with typical July highs near 21–24°C driven by reduced solar insolation and frequent cold fronts from the south, sets a baseline for the July 1 maximum. Recent model guidance points to a mild airmass with limited cloud cover and light winds allowing daytime warming to the mid-20s, elevating implied probabilities for 27°C or 28°C near 63% combined. Differentiating these hinges on precise boundary-layer heating, urban heat-island effects in the metropolitan area, and any last-minute adjustments to forecast soundings from agencies like INMET; a slightly stronger ridge or delayed frontal passage could push readings to 28°C, while modest cooling or increased moisture would favor 27°C. Traders weigh ensemble spread and historical analogs showing occasional 26–29°C outliers in early July against the short 24-hour window to 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 July 1?
Highest temperature in Sao Paulo on July 1?
27°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$57,461 Vol.
$57,461 Vol.
Jul 1, 2026
21°C or below
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
No
31°C or higher
No
27°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$57,461 Vol.
$57,461 Vol.
Jul 1, 2026
21°C or below
$2,512 Vol.
No
22°C
$3,917 Vol.
No
23°C
$1,908 Vol.
No
24°C
$2,935 Vol.
No
25°C
$4,969 Vol.
No
26°C
$12,436 Vol.
No
27°C
$11,867 Vol.
Yes
28°C
$6,069 Vol.
No
29°C
$3,907 Vol.
No
30°C
$3,651 Vol.
No
31°C or higher
$3,291 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 1 Jul '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.Sao Paulo's subtropical winter climate, with typical July highs near 21–24°C driven by reduced solar insolation and frequent cold fronts from the south, sets a baseline for the July 1 maximum. Recent model guidance points to a mild airmass with limited cloud cover and light winds allowing daytime warming to the mid-20s, elevating implied probabilities for 27°C or 28°C near 63% combined. Differentiating these hinges on precise boundary-layer heating, urban heat-island effects in the metropolitan area, and any last-minute adjustments to forecast soundings from agencies like INMET; a slightly stronger ridge or delayed frontal passage could push readings to 28°C, while modest cooling or increased moisture would favor 27°C. Traders weigh ensemble spread and historical analogs showing occasional 26–29°C outliers in early July against the short 24-hour window to 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 1 Jul '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 29, 2026, 9:01 PM ET
Volume
$57,461End Date
Jul 1, 2026Market Opened
Jun 29, 2026, 9:01 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 1 Jul '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.Sao Paulo's subtropical winter climate, with typical July highs near 21–24°C driven by reduced solar insolation and frequent cold fronts from the south, sets a baseline for the July 1 maximum. Recent model guidance points to a mild airmass with limited cloud cover and light winds allowing daytime warming to the mid-20s, elevating implied probabilities for 27°C or 28°C near 63% combined. Differentiating these hinges on precise boundary-layer heating, urban heat-island effects in the metropolitan area, and any last-minute adjustments to forecast soundings from agencies like INMET; a slightly stronger ridge or delayed frontal passage could push readings to 28°C, while modest cooling or increased moisture would favor 27°C. Traders weigh ensemble spread and historical analogs showing occasional 26–29°C outliers in early July against the short 24-hour window to 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 1 Jul '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
$57,461End Date
Jul 1, 2026Market Opened
Jun 29, 2026, 9:01 PM ETResolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Sao Paulo's subtropical winter climate, with typical July highs near 21–24°C driven by reduced solar insolation and frequent cold fronts from the south, sets a baseline for the July 1 maximum. Recent model guidance points to a mild airmass with limited cloud cover and light winds allowing daytime warming to the mid-20s, elevating implied probabilities for 27°C or 28°C near 63% combined. Differentiating these hinges on precise boundary-layer heating, urban heat-island effects in the metropolitan area, and any last-minute adjustments to forecast soundings from agencies like INMET; a slightly stronger ridge or delayed frontal passage could push readings to 28°C, while modest cooling or increased moisture would favor 27°C. Traders weigh ensemble spread and historical analogs showing occasional 26–29°C outliers in early July against the short 24-hour window to 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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