Recent forecasts from Brazilian meteorological sources, including the Centro de Gerenciamento de Emergências Climáticas and Climatempo, indicate that a persistent polar air mass is suppressing maximum temperatures in São Paulo on September 16, with expected highs of 18–19°C under mostly cloudy skies and light showers. This represents a notable departure from September climatological averages of 24–26°C, driven by southerly winds and high pressure that limit daytime heating and maintain elevated humidity. Trader consensus around 19–21°C outcomes aligns with these official guidance updates and model runs emphasizing limited warming potential, though any late-day clearing could nudge readings slightly higher before resolution based on airport observations.
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 September 16?
Highest temperature in Sao Paulo on September 16?
20°C 36%
19°C 25%
21°C 21%
18°C 11%
NEW
NEW
Sep 16, 2026
14°C or below
<1%
15°C
<1%
16°C
1%
17°C
2%
18°C
11%
19°C
25%
20°C
36%
21°C
21%
22°C
2%
23°C
<1%
24°C or higher
<1%
20°C 36%
19°C 25%
21°C 21%
18°C 11%
NEW
NEW
Sep 16, 2026
14°C or below
$195 Vol.
<1%
15°C
$191 Vol.
<1%
16°C
$15 Vol.
1%
17°C
$1,187 Vol.
2%
18°C
$1,072 Vol.
11%
19°C
$870 Vol.
25%
20°C
$847 Vol.
36%
21°C
$1,453 Vol.
21%
22°C
$150 Vol.
2%
23°C
$297 Vol.
<1%
24°C or higher
$434 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 16 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.Recent forecasts from Brazilian meteorological sources, including the Centro de Gerenciamento de Emergências Climáticas and Climatempo, indicate that a persistent polar air mass is suppressing maximum temperatures in São Paulo on September 16, with expected highs of 18–19°C under mostly cloudy skies and light showers. This represents a notable departure from September climatological averages of 24–26°C, driven by southerly winds and high pressure that limit daytime heating and maintain elevated humidity. Trader consensus around 19–21°C outcomes aligns with these official guidance updates and model runs emphasizing limited warming potential, though any late-day clearing could nudge readings slightly higher before resolution based on airport observations.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 16 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 14, 2026, 8:55 AM ET
Volume
$6,709End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 16 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.Recent forecasts from Brazilian meteorological sources, including the Centro de Gerenciamento de Emergências Climáticas and Climatempo, indicate that a persistent polar air mass is suppressing maximum temperatures in São Paulo on September 16, with expected highs of 18–19°C under mostly cloudy skies and light showers. This represents a notable departure from September climatological averages of 24–26°C, driven by southerly winds and high pressure that limit daytime heating and maintain elevated humidity. Trader consensus around 19–21°C outcomes aligns with these official guidance updates and model runs emphasizing limited warming potential, though any late-day clearing could nudge readings slightly higher before resolution based on airport observations.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 16 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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
$6,709End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent forecasts from Brazilian meteorological sources, including the Centro de Gerenciamento de Emergências Climáticas and Climatempo, indicate that a persistent polar air mass is suppressing maximum temperatures in São Paulo on September 16, with expected highs of 18–19°C under mostly cloudy skies and light showers. This represents a notable departure from September climatological averages of 24–26°C, driven by southerly winds and high pressure that limit daytime heating and maintain elevated humidity. Trader consensus around 19–21°C outcomes aligns with these official guidance updates and model runs emphasizing limited warming potential, though any late-day clearing could nudge readings slightly higher before resolution based on airport observations.
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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