Recent official forecasts from sources including the National Meteorological Institute and regional models indicate mostly sunny to partly cloudy skies over São Paulo on September 3 under a stable high-pressure system, with northwest winds and minimal cloud cover supporting daytime heating to a peak of 27°C. This aligns with trader emphasis on the 27°C outcome at 52.5% implied probability, as afternoon observations from multiple stations track toward that threshold without significant model divergence. Early spring conditions in the Southern Hemisphere typically yield highs near 23–25°C, but clear skies and low humidity (around 40–60%) have elevated readings slightly above seasonal norms. Updated model runs show little risk of exceeding 28°C or dropping below 26°C, with resolution hinging on the official daily maximum reported by monitoring agencies.
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 3?
27°C 53%
28°C 36%
26°C 10%
25°C 3%
22°C or below
<1%
23°C
<1%
24°C
1%
25°C
3%
26°C
10%
27°C
53%
28°C
36%
29°C
2%
30°C
<1%
31°C
<1%
32°C or higher
<1%
27°C 53%
28°C 36%
26°C 10%
25°C 3%
22°C or below
<1%
23°C
<1%
24°C
1%
25°C
3%
26°C
10%
27°C
53%
28°C
36%
29°C
2%
30°C
<1%
31°C
<1%
32°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 1, 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...Recent official forecasts from sources including the National Meteorological Institute and regional models indicate mostly sunny to partly cloudy skies over São Paulo on September 3 under a stable high-pressure system, with northwest winds and minimal cloud cover supporting daytime heating to a peak of 27°C. This aligns with trader emphasis on the 27°C outcome at 52.5% implied probability, as afternoon observations from multiple stations track toward that threshold without significant model divergence. Early spring conditions in the Southern Hemisphere typically yield highs near 23–25°C, but clear skies and low humidity (around 40–60%) have elevated readings slightly above seasonal norms. Updated model runs show little risk of exceeding 28°C or dropping below 26°C, with resolution hinging on the official daily maximum reported by monitoring agencies.
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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