Recent observations from São Paulo stations, including a 10.1°C reading at Mirante de Santana, confirm the influence of a polar air mass advected by a passing cold front, producing the coldest September overnight minimum in four years. Clear to partly cloudy skies overnight have enhanced radiative cooling under light southeast winds, aligning with forecast model outputs that keep the daily low near 10–11°C. These conditions have concentrated trader consensus on 11°C and 10°C outcomes, as further drops would require stronger subsidence or clearer skies than currently indicated by official guidance. Updated station data through the evening will refine resolution probabilities before the minimum is finalized.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Sao Paulo on September 7?
Lowest temperature in Sao Paulo on September 7?
8°C 9%
7°C 5%
9°C 2%
6°C <1%
$609 Vol.
$609 Vol.
Sep 7, 2026
5°C or below
1%
6°C
1%
7°C
5%
8°C
9%
9°C
2%
10°C
39%
11°C
63%
12°C
<1%
13°C
<1%
14°C
<1%
15°C or higher
<1%
8°C 9%
7°C 5%
9°C 2%
6°C <1%
$609 Vol.
$609 Vol.
Sep 7, 2026
5°C or below
$13 Vol.
1%
6°C
$60 Vol.
1%
7°C
$25 Vol.
5%
8°C
$72 Vol.
9%
9°C
$80 Vol.
2%
10°C
$32 Vol.
39%
11°C
$32 Vol.
63%
12°C
$105 Vol.
<1%
13°C
$60 Vol.
<1%
14°C
$70 Vol.
<1%
15°C or higher
$60 Vol.
<1%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 7 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 observations from São Paulo stations, including a 10.1°C reading at Mirante de Santana, confirm the influence of a polar air mass advected by a passing cold front, producing the coldest September overnight minimum in four years. Clear to partly cloudy skies overnight have enhanced radiative cooling under light southeast winds, aligning with forecast model outputs that keep the daily low near 10–11°C. These conditions have concentrated trader consensus on 11°C and 10°C outcomes, as further drops would require stronger subsidence or clearer skies than currently indicated by official guidance. Updated station data through the evening will refine resolution probabilities before the minimum is finalized.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 7 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 lowest 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 5, 2026, 8:29 AM ET
Volume
$609End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 7 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 observations from São Paulo stations, including a 10.1°C reading at Mirante de Santana, confirm the influence of a polar air mass advected by a passing cold front, producing the coldest September overnight minimum in four years. Clear to partly cloudy skies overnight have enhanced radiative cooling under light southeast winds, aligning with forecast model outputs that keep the daily low near 10–11°C. These conditions have concentrated trader consensus on 11°C and 10°C outcomes, as further drops would require stronger subsidence or clearer skies than currently indicated by official guidance. Updated station data through the evening will refine resolution probabilities before the minimum is finalized.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 7 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 lowest 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
$609End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent observations from São Paulo stations, including a 10.1°C reading at Mirante de Santana, confirm the influence of a polar air mass advected by a passing cold front, producing the coldest September overnight minimum in four years. Clear to partly cloudy skies overnight have enhanced radiative cooling under light southeast winds, aligning with forecast model outputs that keep the daily low near 10–11°C. These conditions have concentrated trader consensus on 11°C and 10°C outcomes, as further drops would require stronger subsidence or clearer skies than currently indicated by official guidance. Updated station data through the evening will refine resolution probabilities before the minimum is finalized.
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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