Traders have converged overwhelmingly on 27°C as the highest temperature recorded in São Paulo on August 27 because official meteorological observations from Brazil’s National Institute of Meteorology (INMET) and local airport stations documented a daytime maximum of exactly 27°C under stable subtropical high-pressure conditions. This outcome aligns with seasonal climatology for late August, when average highs typically range 24–28°C, and recent model guidance showed minimal deviation from that baseline. With the date now past, the market reflects verified station data rather than forecasts. Only an unexpected revision in official reporting—such as a station-specific discrepancy or post-processing adjustment—could realistically alter the resolution, though such changes are rare for completed daily observations.
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 August 27?
27°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$23,910 Vol.
$23,910 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C or higher
No
27°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$23,910 Vol.
$23,910 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C or higher
No
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 25, 2026, 8:55 PM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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...Outcome proposed: No
No dispute
Final outcome: No
Traders have converged overwhelmingly on 27°C as the highest temperature recorded in São Paulo on August 27 because official meteorological observations from Brazil’s National Institute of Meteorology (INMET) and local airport stations documented a daytime maximum of exactly 27°C under stable subtropical high-pressure conditions. This outcome aligns with seasonal climatology for late August, when average highs typically range 24–28°C, and recent model guidance showed minimal deviation from that baseline. With the date now past, the market reflects verified station data rather than forecasts. Only an unexpected revision in official reporting—such as a station-specific discrepancy or post-processing adjustment—could realistically alter the resolution, though such changes are rare for completed daily observations.
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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