Recent cold front passage has suppressed temperatures across São Paulo, with official monitoring and ensemble forecasts from agencies like INMET and international models showing daytime maxima clustered between 18–23°C on September 8 amid variable cloud cover and light southeasterly winds. This spread drives the closely matched market-implied odds, as small differences in timing of clearing skies or boundary-layer mixing can shift the daily peak by 1–2°C. Historical September averages near 24–25°C provide context, but post-frontal stabilization favors the lower end of typical ranges. Updated model runs and surface observations in the next 24–48 hours will refine resolution criteria for the exact high.
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 8?
Highest temperature in Sao Paulo on September 8?
21°C 26%
22°C 25%
20°C 21%
19°C 8%
NEW
NEW
Sep 8, 2026
15°C or below
4%
16°C
7%
17°C
3%
18°C
6%
19°C
8%
20°C
21%
21°C
26%
22°C
25%
23°C
7%
24°C
4%
25°C or higher
1%
21°C 26%
22°C 25%
20°C 21%
19°C 8%
NEW
NEW
Sep 8, 2026
15°C or below
$0 Vol.
4%
16°C
$117 Vol.
7%
17°C
$56 Vol.
3%
18°C
$27 Vol.
6%
19°C
$147 Vol.
8%
20°C
$89 Vol.
21%
21°C
$0 Vol.
26%
22°C
$122 Vol.
25%
23°C
$0 Vol.
7%
24°C
$57 Vol.
4%
25°C or higher
$76 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 8 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 front passage has suppressed temperatures across São Paulo, with official monitoring and ensemble forecasts from agencies like INMET and international models showing daytime maxima clustered between 18–23°C on September 8 amid variable cloud cover and light southeasterly winds. This spread drives the closely matched market-implied odds, as small differences in timing of clearing skies or boundary-layer mixing can shift the daily peak by 1–2°C. Historical September averages near 24–25°C provide context, but post-frontal stabilization favors the lower end of typical ranges. Updated model runs and surface observations in the next 24–48 hours will refine resolution criteria for the exact high.
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 8 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 6, 2026, 8:55 AM ET
Volume
$690End Date
Sep 8, 2026Market Opened
Sep 6, 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 8 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 front passage has suppressed temperatures across São Paulo, with official monitoring and ensemble forecasts from agencies like INMET and international models showing daytime maxima clustered between 18–23°C on September 8 amid variable cloud cover and light southeasterly winds. This spread drives the closely matched market-implied odds, as small differences in timing of clearing skies or boundary-layer mixing can shift the daily peak by 1–2°C. Historical September averages near 24–25°C provide context, but post-frontal stabilization favors the lower end of typical ranges. Updated model runs and surface observations in the next 24–48 hours will refine resolution criteria for the exact high.
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 8 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
$690End Date
Sep 8, 2026Market Opened
Sep 6, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent cold front passage has suppressed temperatures across São Paulo, with official monitoring and ensemble forecasts from agencies like INMET and international models showing daytime maxima clustered between 18–23°C on September 8 amid variable cloud cover and light southeasterly winds. This spread drives the closely matched market-implied odds, as small differences in timing of clearing skies or boundary-layer mixing can shift the daily peak by 1–2°C. Historical September averages near 24–25°C provide context, but post-frontal stabilization favors the lower end of typical ranges. Updated model runs and surface observations in the next 24–48 hours will refine resolution criteria for the exact high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions