Forecast consensus from multiple models places Sao Paulo’s peak temperature near 29°C this afternoon under partly cloudy skies with northwest winds around 20–30 km/h and limited precipitation early in the day. Afternoon heating is tempered by increasing cloud cover and scattered showers that could cap the high at 28°C or allow a brief push to 30°C depending on the exact timing of any convective development and urban heat retention. The narrow spread between 28–30°C outcomes reflects model differences in boundary-layer mixing, dew-point suppression, and localized thunderstorm initiation, with official observations from INMET stations expected to resolve the precise maximum by evening.
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 11?
29°C 31%
30°C 25%
28°C 19%
27°C 11%
$13,480 Vol.
$13,480 Vol.
25°C or below
3%
26°C
4%
27°C
11%
28°C
19%
29°C
31%
30°C
25%
31°C
8%
32°C
1%
33°C
<1%
34°C
<1%
35°C or higher
<1%
29°C 31%
30°C 25%
28°C 19%
27°C 11%
$13,480 Vol.
$13,480 Vol.
25°C or below
3%
26°C
4%
27°C
11%
28°C
19%
29°C
31%
30°C
25%
31°C
8%
32°C
1%
33°C
<1%
34°C
<1%
35°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 9, 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...Forecast consensus from multiple models places Sao Paulo’s peak temperature near 29°C this afternoon under partly cloudy skies with northwest winds around 20–30 km/h and limited precipitation early in the day. Afternoon heating is tempered by increasing cloud cover and scattered showers that could cap the high at 28°C or allow a brief push to 30°C depending on the exact timing of any convective development and urban heat retention. The narrow spread between 28–30°C outcomes reflects model differences in boundary-layer mixing, dew-point suppression, and localized thunderstorm initiation, with official observations from INMET stations expected to resolve the precise maximum by evening.
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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