A cold front advected cooler polar maritime air into São Paulo on September 6, 2026, suppressing daytime heating and driving the daily minimum into the 7–11 °C range. Persistent low stratus, light rain or drizzle, high relative humidity, and southeasterly flow limited radiative warming and enhanced boundary-layer cooling, with official stations such as Mirante de Santana and Guarulhos recording maxima near 14–15 °C early in the period before steady decline. Ensemble forecasts and model runs showed modest spread in the exact overnight low because of variations in cloud timing, wind mixing, and localized urban effects, producing the tight clustering of market-implied probabilities across 7–11 °C. Official Inmet or airport minimums, once finalized, will resolve the market; any revision in the 0.5 °C measurement band can shift the outcome among these closely matched bins.
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 6?
Lowest temperature in Sao Paulo on September 6?
7°C 99.0%
8°C 99%
9°C 99%
10°C 99%
$615 Vol.
$615 Vol.
Sep 6, 2026
6°C or below
1%
7°C
99%
8°C
99%
9°C
99%
10°C
99%
11°C
99%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C or higher
<1%
7°C 99.0%
8°C 99%
9°C 99%
10°C 99%
$615 Vol.
$615 Vol.
Sep 6, 2026
6°C or below
$75 Vol.
1%
7°C
$60 Vol.
99%
8°C
$25 Vol.
99%
9°C
$30 Vol.
99%
10°C
$30 Vol.
99%
11°C
$30 Vol.
99%
12°C
$120 Vol.
<1%
13°C
$100 Vol.
<1%
14°C
$40 Vol.
<1%
15°C
$50 Vol.
<1%
16°C or higher
$55 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 6 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.A cold front advected cooler polar maritime air into São Paulo on September 6, 2026, suppressing daytime heating and driving the daily minimum into the 7–11 °C range. Persistent low stratus, light rain or drizzle, high relative humidity, and southeasterly flow limited radiative warming and enhanced boundary-layer cooling, with official stations such as Mirante de Santana and Guarulhos recording maxima near 14–15 °C early in the period before steady decline. Ensemble forecasts and model runs showed modest spread in the exact overnight low because of variations in cloud timing, wind mixing, and localized urban effects, producing the tight clustering of market-implied probabilities across 7–11 °C. Official Inmet or airport minimums, once finalized, will resolve the market; any revision in the 0.5 °C measurement band can shift the outcome among these closely matched bins.
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 6 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 4, 2026, 8:29 AM ET
Volume
$615End Date
Sep 6, 2026Market Opened
Sep 4, 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 6 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.A cold front advected cooler polar maritime air into São Paulo on September 6, 2026, suppressing daytime heating and driving the daily minimum into the 7–11 °C range. Persistent low stratus, light rain or drizzle, high relative humidity, and southeasterly flow limited radiative warming and enhanced boundary-layer cooling, with official stations such as Mirante de Santana and Guarulhos recording maxima near 14–15 °C early in the period before steady decline. Ensemble forecasts and model runs showed modest spread in the exact overnight low because of variations in cloud timing, wind mixing, and localized urban effects, producing the tight clustering of market-implied probabilities across 7–11 °C. Official Inmet or airport minimums, once finalized, will resolve the market; any revision in the 0.5 °C measurement band can shift the outcome among these closely matched bins.
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 6 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
$615End Date
Sep 6, 2026Market Opened
Sep 4, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...A cold front advected cooler polar maritime air into São Paulo on September 6, 2026, suppressing daytime heating and driving the daily minimum into the 7–11 °C range. Persistent low stratus, light rain or drizzle, high relative humidity, and southeasterly flow limited radiative warming and enhanced boundary-layer cooling, with official stations such as Mirante de Santana and Guarulhos recording maxima near 14–15 °C early in the period before steady decline. Ensemble forecasts and model runs showed modest spread in the exact overnight low because of variations in cloud timing, wind mixing, and localized urban effects, producing the tight clustering of market-implied probabilities across 7–11 °C. Official Inmet or airport minimums, once finalized, will resolve the market; any revision in the 0.5 °C measurement band can shift the outcome among these closely matched bins.
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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