Traders see roughly even odds for a Sao Paulo minimum of 15°C versus 10°C or below on September 13 because official forecasts and real-time observations cluster tightly around 12–15°C amid persistent overcast skies, light rain, and southeasterly flow. High humidity near 90–95% and low-level stratus limit nocturnal radiative cooling, while daytime maxima hover near 16–17°C under the same stable air mass. Model consensus from regional guidance points to a gradual overnight drop to the mid-teens Celsius without a sharp cold-air intrusion, keeping the outcome sensitive to small timing differences in clearing or wind shifts. Historical September averages near 12°C provide context, yet current conditions favor values near the market’s 13–15°C cluster unless drier, clearer air arrives before dawn.
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 13?
Lowest temperature in Sao Paulo on September 13?
10°C or below 96%
15°C 50%
14°C 50%
13°C 49%
NEW
NEW
Sep 13, 2026
10°C or below
96%
11°C
9%
12°C
9%
13°C
49%
14°C
50%
15°C
50%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C or higher
<1%
10°C or below 96%
15°C 50%
14°C 50%
13°C 49%
NEW
NEW
Sep 13, 2026
10°C or below
$0 Vol.
96%
11°C
$0 Vol.
9%
12°C
$0 Vol.
9%
13°C
$5 Vol.
49%
14°C
$6 Vol.
50%
15°C
$0 Vol.
50%
16°C
$296 Vol.
<1%
17°C
$15 Vol.
<1%
18°C
$15 Vol.
<1%
19°C
$15 Vol.
<1%
20°C or higher
$15 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 13 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.Traders see roughly even odds for a Sao Paulo minimum of 15°C versus 10°C or below on September 13 because official forecasts and real-time observations cluster tightly around 12–15°C amid persistent overcast skies, light rain, and southeasterly flow. High humidity near 90–95% and low-level stratus limit nocturnal radiative cooling, while daytime maxima hover near 16–17°C under the same stable air mass. Model consensus from regional guidance points to a gradual overnight drop to the mid-teens Celsius without a sharp cold-air intrusion, keeping the outcome sensitive to small timing differences in clearing or wind shifts. Historical September averages near 12°C provide context, yet current conditions favor values near the market’s 13–15°C cluster unless drier, clearer air arrives before dawn.
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 13 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 11, 2026, 8:29 AM ET
Volume
$367End Date
Sep 13, 2026Market Opened
Sep 11, 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 13 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.Traders see roughly even odds for a Sao Paulo minimum of 15°C versus 10°C or below on September 13 because official forecasts and real-time observations cluster tightly around 12–15°C amid persistent overcast skies, light rain, and southeasterly flow. High humidity near 90–95% and low-level stratus limit nocturnal radiative cooling, while daytime maxima hover near 16–17°C under the same stable air mass. Model consensus from regional guidance points to a gradual overnight drop to the mid-teens Celsius without a sharp cold-air intrusion, keeping the outcome sensitive to small timing differences in clearing or wind shifts. Historical September averages near 12°C provide context, yet current conditions favor values near the market’s 13–15°C cluster unless drier, clearer air arrives before dawn.
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 13 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
$367End Date
Sep 13, 2026Market Opened
Sep 11, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Traders see roughly even odds for a Sao Paulo minimum of 15°C versus 10°C or below on September 13 because official forecasts and real-time observations cluster tightly around 12–15°C amid persistent overcast skies, light rain, and southeasterly flow. High humidity near 90–95% and low-level stratus limit nocturnal radiative cooling, while daytime maxima hover near 16–17°C under the same stable air mass. Model consensus from regional guidance points to a gradual overnight drop to the mid-teens Celsius without a sharp cold-air intrusion, keeping the outcome sensitive to small timing differences in clearing or wind shifts. Historical September averages near 12°C provide context, yet current conditions favor values near the market’s 13–15°C cluster unless drier, clearer air arrives before dawn.
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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