Forecast models for São Paulo on June 23, 2026, cluster around a daily maximum of 21–23 °C because the city sits under a cool winter airmass typical of the Southern Hemisphere dry season, with limited solar heating from partial cloud cover and possible weak frontal passages. Small differences among leading outcomes hinge on precise timing of any cold-air advection from the south, variations in low-level wind direction that either enhance or suppress urban heat-island effects, and model spread in predicted cloud thickness and boundary-layer mixing. ECMWF and GFS runs show modest disagreement on whether a brief clearing will allow an extra degree of afternoon warming or whether lingering moisture keeps readings closer to 21 °C. Traders weigh these uncertainties against historical June maxima near 22–25 °C, producing the tight distribution seen in current market prices.
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 23?
Highest temperature in Sao Paulo on June 23?
22°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$69,121 Vol.
$69,121 Vol.
Jun 23, 2026
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C or higher
No
22°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$69,121 Vol.
$69,121 Vol.
Jun 23, 2026
18°C or below
$9,210 Vol.
No
19°C
$7,734 Vol.
No
20°C
$9,652 Vol.
No
21°C
$18,990 Vol.
No
22°C
$10,132 Vol.
Yes
23°C
$3,625 Vol.
No
24°C
$3,801 Vol.
No
25°C
$2,200 Vol.
No
26°C
$1,609 Vol.
No
27°C
$1,170 Vol.
No
28°C or higher
$998 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 23 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.Forecast models for São Paulo on June 23, 2026, cluster around a daily maximum of 21–23 °C because the city sits under a cool winter airmass typical of the Southern Hemisphere dry season, with limited solar heating from partial cloud cover and possible weak frontal passages. Small differences among leading outcomes hinge on precise timing of any cold-air advection from the south, variations in low-level wind direction that either enhance or suppress urban heat-island effects, and model spread in predicted cloud thickness and boundary-layer mixing. ECMWF and GFS runs show modest disagreement on whether a brief clearing will allow an extra degree of afternoon warming or whether lingering moisture keeps readings closer to 21 °C. Traders weigh these uncertainties against historical June maxima near 22–25 °C, producing the tight distribution seen in current market prices.
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 23 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 21, 2026, 9:03 PM ET
Volume
$69,121End Date
Jun 23, 2026Market Opened
Jun 21, 2026, 9:03 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 23 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.Forecast models for São Paulo on June 23, 2026, cluster around a daily maximum of 21–23 °C because the city sits under a cool winter airmass typical of the Southern Hemisphere dry season, with limited solar heating from partial cloud cover and possible weak frontal passages. Small differences among leading outcomes hinge on precise timing of any cold-air advection from the south, variations in low-level wind direction that either enhance or suppress urban heat-island effects, and model spread in predicted cloud thickness and boundary-layer mixing. ECMWF and GFS runs show modest disagreement on whether a brief clearing will allow an extra degree of afternoon warming or whether lingering moisture keeps readings closer to 21 °C. Traders weigh these uncertainties against historical June maxima near 22–25 °C, producing the tight distribution seen in current market prices.
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 23 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
$69,121End Date
Jun 23, 2026Market Opened
Jun 21, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Forecast models for São Paulo on June 23, 2026, cluster around a daily maximum of 21–23 °C because the city sits under a cool winter airmass typical of the Southern Hemisphere dry season, with limited solar heating from partial cloud cover and possible weak frontal passages. Small differences among leading outcomes hinge on precise timing of any cold-air advection from the south, variations in low-level wind direction that either enhance or suppress urban heat-island effects, and model spread in predicted cloud thickness and boundary-layer mixing. ECMWF and GFS runs show modest disagreement on whether a brief clearing will allow an extra degree of afternoon warming or whether lingering moisture keeps readings closer to 21 °C. Traders weigh these uncertainties against historical June maxima near 22–25 °C, producing the tight distribution seen in current market prices.
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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