Official meteorological observations from São Paulo stations, including Inmet data, recorded a daily maximum of 20°C on September 15, 2026, aligning with trader consensus at near-certain implied probability. Persistent cool, cloudy, and rainy conditions throughout early September—marked by record rainfall volumes exceeding historical averages—suppressed daytime heating and kept highs well below seasonal norms around 23–26°C. Model runs and station reports converged on this range, with minimal divergence in final verified readings. Resolution depends on the highest confirmed hourly or daily peak from authoritative sources; minor station discrepancies or data revisions remain the primary realistic variables that could alter outcomes, though strong observational agreement limits such shifts.
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 15?
Highest temperature in Sao Paulo on September 15?
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$25,684 Vol.
$25,684 Vol.
Sep 15, 2026
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$25,684 Vol.
$25,684 Vol.
Sep 15, 2026
15°C or below
$1,799 Vol.
No
16°C
$1,859 Vol.
No
17°C
$1,377 Vol.
No
18°C
$2,227 Vol.
No
19°C
$2,213 Vol.
No
20°C
$4,839 Vol.
Yes
21°C
$2,531 Vol.
No
22°C
$3,464 Vol.
No
23°C
$2,007 Vol.
No
24°C
$1,878 Vol.
No
25°C or higher
$1,489 Vol.
No
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 15 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.Official meteorological observations from São Paulo stations, including Inmet data, recorded a daily maximum of 20°C on September 15, 2026, aligning with trader consensus at near-certain implied probability. Persistent cool, cloudy, and rainy conditions throughout early September—marked by record rainfall volumes exceeding historical averages—suppressed daytime heating and kept highs well below seasonal norms around 23–26°C. Model runs and station reports converged on this range, with minimal divergence in final verified readings. Resolution depends on the highest confirmed hourly or daily peak from authoritative sources; minor station discrepancies or data revisions remain the primary realistic variables that could alter outcomes, though strong observational agreement limits such shifts.
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 15 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 13, 2026, 12:55 PM ET
Volume
$25,684End Date
Sep 15, 2026Market Opened
Sep 13, 2026, 12:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 15 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.Official meteorological observations from São Paulo stations, including Inmet data, recorded a daily maximum of 20°C on September 15, 2026, aligning with trader consensus at near-certain implied probability. Persistent cool, cloudy, and rainy conditions throughout early September—marked by record rainfall volumes exceeding historical averages—suppressed daytime heating and kept highs well below seasonal norms around 23–26°C. Model runs and station reports converged on this range, with minimal divergence in final verified readings. Resolution depends on the highest confirmed hourly or daily peak from authoritative sources; minor station discrepancies or data revisions remain the primary realistic variables that could alter outcomes, though strong observational agreement limits such shifts.
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 15 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
$25,684End Date
Sep 15, 2026Market Opened
Sep 13, 2026, 12:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations from São Paulo stations, including Inmet data, recorded a daily maximum of 20°C on September 15, 2026, aligning with trader consensus at near-certain implied probability. Persistent cool, cloudy, and rainy conditions throughout early September—marked by record rainfall volumes exceeding historical averages—suppressed daytime heating and kept highs well below seasonal norms around 23–26°C. Model runs and station reports converged on this range, with minimal divergence in final verified readings. Resolution depends on the highest confirmed hourly or daily peak from authoritative sources; minor station discrepancies or data revisions remain the primary realistic variables that could alter outcomes, though strong observational agreement limits such shifts.
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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