Recent cold air advection and widespread cloud cover with showers have suppressed daytime heating in São Paulo ahead of September 24, shifting trader focus toward 18–20°C outcomes that dominate the distribution. Multiple global models currently indicate a daily maximum near 16–19°C under southerly flow, consistent with the observed cooldown from prior warm conditions and well below the September climatological average of roughly 23–25°C. High uncertainty persists because small changes in cloud timing or frontal position can alter peak readings by 2–3°C, with fresh model updates from centers such as ECMWF and GFS expected to tighten the range before 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 September 24?
Highest temperature in Sao Paulo on September 24?
20°C 35%
19°C 24%
18°C 20%
21°C 19%
NEW
NEW
Sep 24, 2026
13°C or below
2%
14°C
4%
15°C
3%
16°C
4%
17°C
7%
18°C
20%
19°C
22%
20°C
35%
21°C
19%
22°C
11%
23°C or higher
1%
20°C 35%
19°C 24%
18°C 20%
21°C 19%
NEW
NEW
Sep 24, 2026
13°C or below
$10 Vol.
2%
14°C
$10 Vol.
4%
15°C
$10 Vol.
3%
16°C
$7 Vol.
4%
17°C
$0 Vol.
7%
18°C
$251 Vol.
20%
19°C
$28 Vol.
22%
20°C
$32 Vol.
35%
21°C
$5 Vol.
19%
22°C
$0 Vol.
11%
23°C or higher
$101 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 24 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 cold air advection and widespread cloud cover with showers have suppressed daytime heating in São Paulo ahead of September 24, shifting trader focus toward 18–20°C outcomes that dominate the distribution. Multiple global models currently indicate a daily maximum near 16–19°C under southerly flow, consistent with the observed cooldown from prior warm conditions and well below the September climatological average of roughly 23–25°C. High uncertainty persists because small changes in cloud timing or frontal position can alter peak readings by 2–3°C, with fresh model updates from centers such as ECMWF and GFS expected to tighten the range before resolution.
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 24 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 22, 2026, 8:55 AM ET
Volume
$454End Date
Sep 24, 2026Market Opened
Sep 22, 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 24 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 cold air advection and widespread cloud cover with showers have suppressed daytime heating in São Paulo ahead of September 24, shifting trader focus toward 18–20°C outcomes that dominate the distribution. Multiple global models currently indicate a daily maximum near 16–19°C under southerly flow, consistent with the observed cooldown from prior warm conditions and well below the September climatological average of roughly 23–25°C. High uncertainty persists because small changes in cloud timing or frontal position can alter peak readings by 2–3°C, with fresh model updates from centers such as ECMWF and GFS expected to tighten the range before resolution.
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 24 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
$454End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent cold air advection and widespread cloud cover with showers have suppressed daytime heating in São Paulo ahead of September 24, shifting trader focus toward 18–20°C outcomes that dominate the distribution. Multiple global models currently indicate a daily maximum near 16–19°C under southerly flow, consistent with the observed cooldown from prior warm conditions and well below the September climatological average of roughly 23–25°C. High uncertainty persists because small changes in cloud timing or frontal position can alter peak readings by 2–3°C, with fresh model updates from centers such as ECMWF and GFS expected to tighten the range before 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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