Persistent influence of a polar air mass and associated frontal boundary continues to drive cooler, cloudier conditions across São Paulo, suppressing insolation and limiting daytime maxima. Official guidance from sources including the Met Office and regional models points to highs near 20–23°C on September 9 amid widespread light rain or showers, with dew points in the mid-teens Celsius and light easterly winds. Trader consensus clustering around 21–24°C reflects model agreement on modest warming from recent sub-20°C readings but uncertainty over cloud thickness and any brief clearing that could allow brief spikes toward 24°C or keep readings capped near 21°C. Historical September averages near 23–25°C provide context, yet the current synoptic pattern favors values below seasonal norms. Updated model runs and INMET briefings in the next 24–48 hours will refine the exact peak.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Sao Paulo on September 9?
Highest temperature in Sao Paulo on September 9?
23°C 29%
22°C 20%
21°C 15%
24°C 15%
NEW
NEW
Sep 9, 2026
15°C or below
<1%
16°C
<1%
17°C
3%
18°C
2%
19°C
3%
20°C
12%
21°C
15%
22°C
20%
23°C
29%
24°C
15%
25°C or higher
7%
23°C 29%
22°C 20%
21°C 15%
24°C 15%
NEW
NEW
Sep 9, 2026
15°C or below
$323 Vol.
<1%
16°C
$125 Vol.
<1%
17°C
$0 Vol.
3%
18°C
$26 Vol.
2%
19°C
$0 Vol.
3%
20°C
$54 Vol.
12%
21°C
$70 Vol.
15%
22°C
$75 Vol.
20%
23°C
$28 Vol.
29%
24°C
$18 Vol.
15%
25°C or higher
$46 Vol.
7%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.Persistent influence of a polar air mass and associated frontal boundary continues to drive cooler, cloudier conditions across São Paulo, suppressing insolation and limiting daytime maxima. Official guidance from sources including the Met Office and regional models points to highs near 20–23°C on September 9 amid widespread light rain or showers, with dew points in the mid-teens Celsius and light easterly winds. Trader consensus clustering around 21–24°C reflects model agreement on modest warming from recent sub-20°C readings but uncertainty over cloud thickness and any brief clearing that could allow brief spikes toward 24°C or keep readings capped near 21°C. Historical September averages near 23–25°C provide context, yet the current synoptic pattern favors values below seasonal norms. Updated model runs and INMET briefings in the next 24–48 hours will refine the exact peak.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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 7, 2026, 8:55 AM ET
Volume
$765End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.Persistent influence of a polar air mass and associated frontal boundary continues to drive cooler, cloudier conditions across São Paulo, suppressing insolation and limiting daytime maxima. Official guidance from sources including the Met Office and regional models points to highs near 20–23°C on September 9 amid widespread light rain or showers, with dew points in the mid-teens Celsius and light easterly winds. Trader consensus clustering around 21–24°C reflects model agreement on modest warming from recent sub-20°C readings but uncertainty over cloud thickness and any brief clearing that could allow brief spikes toward 24°C or keep readings capped near 21°C. Historical September averages near 23–25°C provide context, yet the current synoptic pattern favors values below seasonal norms. Updated model runs and INMET briefings in the next 24–48 hours will refine the exact peak.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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
$765End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Persistent influence of a polar air mass and associated frontal boundary continues to drive cooler, cloudier conditions across São Paulo, suppressing insolation and limiting daytime maxima. Official guidance from sources including the Met Office and regional models points to highs near 20–23°C on September 9 amid widespread light rain or showers, with dew points in the mid-teens Celsius and light easterly winds. Trader consensus clustering around 21–24°C reflects model agreement on modest warming from recent sub-20°C readings but uncertainty over cloud thickness and any brief clearing that could allow brief spikes toward 24°C or keep readings capped near 21°C. Historical September averages near 23–25°C provide context, yet the current synoptic pattern favors values below seasonal norms. Updated model runs and INMET briefings in the next 24–48 hours will refine the exact peak.
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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