**Forecast uncertainty around an approaching cold front is driving the near-even split in trader sentiment for São Paulo’s minimum temperature on September 12.** Official guidance and ensemble models show a frontal boundary linked to an extratropical cyclone shifting across the region, with varying timing and intensity that could produce minimums ranging from the low teens Celsius to the mid-teens or higher depending on cloud cover, rainfall, and wind direction. Recent observations indicate already cooler-than-average conditions this September, and short-range runs differ on how much polar air reaches the city overnight. With resolution only two days away, traders are pricing in substantial model spread rather than a single consensus outcome.
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 12?
Lowest temperature in Sao Paulo on September 12?
12°C or below 94%
22°C or higher 94%
15°C 40%
13°C 39%
NEW
NEW
Sep 12, 2026
12°C or below
94%
13°C
39%
14°C
39%
15°C
40%
16°C
27%
17°C
22%
18°C
20%
19°C
39%
20°C
39%
21°C
39%
22°C or higher
94%
12°C or below 94%
22°C or higher 94%
15°C 40%
13°C 39%
NEW
NEW
Sep 12, 2026
12°C or below
$0 Vol.
94%
13°C
$0 Vol.
39%
14°C
$0 Vol.
39%
15°C
$0 Vol.
40%
16°C
$0 Vol.
27%
17°C
$0 Vol.
22%
18°C
$0 Vol.
20%
19°C
$0 Vol.
39%
20°C
$0 Vol.
39%
21°C
$0 Vol.
39%
22°C or higher
$0 Vol.
94%
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 12 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.**Forecast uncertainty around an approaching cold front is driving the near-even split in trader sentiment for São Paulo’s minimum temperature on September 12.** Official guidance and ensemble models show a frontal boundary linked to an extratropical cyclone shifting across the region, with varying timing and intensity that could produce minimums ranging from the low teens Celsius to the mid-teens or higher depending on cloud cover, rainfall, and wind direction. Recent observations indicate already cooler-than-average conditions this September, and short-range runs differ on how much polar air reaches the city overnight. With resolution only two days away, traders are pricing in substantial model spread rather than a single consensus outcome.
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 12 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 10, 2026, 8:28 AM ET
Volume
$0End Date
Sep 12, 2026Market Opened
Sep 10, 2026, 8:28 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 12 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.**Forecast uncertainty around an approaching cold front is driving the near-even split in trader sentiment for São Paulo’s minimum temperature on September 12.** Official guidance and ensemble models show a frontal boundary linked to an extratropical cyclone shifting across the region, with varying timing and intensity that could produce minimums ranging from the low teens Celsius to the mid-teens or higher depending on cloud cover, rainfall, and wind direction. Recent observations indicate already cooler-than-average conditions this September, and short-range runs differ on how much polar air reaches the city overnight. With resolution only two days away, traders are pricing in substantial model spread rather than a single consensus outcome.
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 12 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
$0End Date
Sep 12, 2026Market Opened
Sep 10, 2026, 8:28 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...**Forecast uncertainty around an approaching cold front is driving the near-even split in trader sentiment for São Paulo’s minimum temperature on September 12.** Official guidance and ensemble models show a frontal boundary linked to an extratropical cyclone shifting across the region, with varying timing and intensity that could produce minimums ranging from the low teens Celsius to the mid-teens or higher depending on cloud cover, rainfall, and wind direction. Recent observations indicate already cooler-than-average conditions this September, and short-range runs differ on how much polar air reaches the city overnight. With resolution only two days away, traders are pricing in substantial model spread rather than a single consensus outcome.
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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