Recent forecast models from global centers show notable divergence on the strength and timing of a potential cold front approaching Sao Paulo, driving the tight spread between the leading >=18°C outcome at 38.5% and <=8°C at 33%. Typical mid-September minimums hover near 15°C based on historical climatology, but southerly winds, reduced cloud cover, and high-pressure systems could enhance nighttime radiative cooling if the front intensifies. Ensemble spreads highlight uncertainty in precipitation and wind patterns that affect local temperatures, with new model runs and official Brazilian meteorological updates expected to clarify resolution thresholds before the 17th.
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 17?
Lowest temperature in Sao Paulo on September 17?
8°C or below 94%
18°C or higher 73%
15°C 38%
9°C 37%
NEW
NEW
Sep 17, 2026
8°C or below
94%
9°C
37%
10°C
37%
11°C
37%
12°C
22%
13°C
30%
14°C
24%
15°C
38%
16°C
37%
17°C
37%
18°C or higher
73%
8°C or below 94%
18°C or higher 73%
15°C 38%
9°C 37%
NEW
NEW
Sep 17, 2026
8°C or below
$0 Vol.
94%
9°C
$0 Vol.
37%
10°C
$0 Vol.
37%
11°C
$0 Vol.
37%
12°C
$0 Vol.
22%
13°C
$0 Vol.
30%
14°C
$0 Vol.
24%
15°C
$0 Vol.
38%
16°C
$0 Vol.
37%
17°C
$0 Vol.
37%
18°C or higher
$0 Vol.
73%
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 17 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 forecast models from global centers show notable divergence on the strength and timing of a potential cold front approaching Sao Paulo, driving the tight spread between the leading >=18°C outcome at 38.5% and <=8°C at 33%. Typical mid-September minimums hover near 15°C based on historical climatology, but southerly winds, reduced cloud cover, and high-pressure systems could enhance nighttime radiative cooling if the front intensifies. Ensemble spreads highlight uncertainty in precipitation and wind patterns that affect local temperatures, with new model runs and official Brazilian meteorological updates expected to clarify resolution thresholds before the 17th.
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 17 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 15, 2026, 8:29 AM ET
Volume
$0End Date
Sep 17, 2026Market Opened
Sep 15, 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 17 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 forecast models from global centers show notable divergence on the strength and timing of a potential cold front approaching Sao Paulo, driving the tight spread between the leading >=18°C outcome at 38.5% and <=8°C at 33%. Typical mid-September minimums hover near 15°C based on historical climatology, but southerly winds, reduced cloud cover, and high-pressure systems could enhance nighttime radiative cooling if the front intensifies. Ensemble spreads highlight uncertainty in precipitation and wind patterns that affect local temperatures, with new model runs and official Brazilian meteorological updates expected to clarify resolution thresholds before the 17th.
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 17 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 17, 2026Market Opened
Sep 15, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent forecast models from global centers show notable divergence on the strength and timing of a potential cold front approaching Sao Paulo, driving the tight spread between the leading >=18°C outcome at 38.5% and <=8°C at 33%. Typical mid-September minimums hover near 15°C based on historical climatology, but southerly winds, reduced cloud cover, and high-pressure systems could enhance nighttime radiative cooling if the front intensifies. Ensemble spreads highlight uncertainty in precipitation and wind patterns that affect local temperatures, with new model runs and official Brazilian meteorological updates expected to clarify resolution thresholds before the 17th.
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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