Persistent southeasterly winds and extensive cloud cover from a passing frontal system are suppressing daytime heating in São Paulo, anchoring the daily maximum near 15°C according to multiple forecast models. Overcast skies limit solar insolation while steady precipitation and high humidity further moderate temperatures, consistent with current surface observations showing readings clustered around 13–14°C through midday. This setup deviates from early-September climatology, which typically features highs near 24°C under clearer, drier conditions. Trader consensus at 95.5% for 15°C reflects the tight agreement across official guidance, though a faster clearance of clouds or a wind shift could allow modest warming to 16°C before sunset.
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 6?
15°C 97%
16°C 4%
17°C <1%
18°C <1%
$50,023 Vol.
$50,023 Vol.
13°C or below
<1%
14°C
<1%
15°C
97%
16°C
4%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C or higher
<1%
15°C 97%
16°C 4%
17°C <1%
18°C <1%
$50,023 Vol.
$50,023 Vol.
13°C or below
<1%
14°C
<1%
15°C
97%
16°C
4%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C or higher
<1%
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 4, 2026, 8:55 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Persistent southeasterly winds and extensive cloud cover from a passing frontal system are suppressing daytime heating in São Paulo, anchoring the daily maximum near 15°C according to multiple forecast models. Overcast skies limit solar insolation while steady precipitation and high humidity further moderate temperatures, consistent with current surface observations showing readings clustered around 13–14°C through midday. This setup deviates from early-September climatology, which typically features highs near 24°C under clearer, drier conditions. Trader consensus at 95.5% for 15°C reflects the tight agreement across official guidance, though a faster clearance of clouds or a wind shift could allow modest warming to 16°C before sunset.
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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