Forecasts for São Paulo on September 20 show high uncertainty in peak daytime temperatures, with models converging on a range of 23–27°C amid variable cloud cover and northerly winds that may limit surface heating. Scattered precipitation chances and overcast conditions could suppress maximum readings below recent climatological norms for the dry season transition, while clearer intervals in some runs support brief warming to the mid-20s. Official monitoring from agencies like INMET will refine these projections through updated model consensus ahead of resolution, with traders pricing the tight spread between 23°C and 26°C to reflect genuine variability in convective activity and steering patterns rather than a single dominant outcome.
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 20?
Highest temperature in Sao Paulo on September 20?
23°C 39%
22°C 30%
24°C 20%
25°C 19%
NEW
NEW
Sep 20, 2026
21°C or below
16%
22°C
30%
23°C
39%
24°C
20%
25°C
19%
26°C
19%
27°C
12%
28°C
7%
29°C
4%
30°C
4%
31°C or higher
4%
23°C 39%
22°C 30%
24°C 20%
25°C 19%
NEW
NEW
Sep 20, 2026
21°C or below
$0 Vol.
16%
22°C
$0 Vol.
30%
23°C
$0 Vol.
39%
24°C
$0 Vol.
20%
25°C
$0 Vol.
19%
26°C
$7 Vol.
19%
27°C
$0 Vol.
12%
28°C
$40 Vol.
7%
29°C
$0 Vol.
4%
30°C
$0 Vol.
4%
31°C or higher
$0 Vol.
4%
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 20 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.Forecasts for São Paulo on September 20 show high uncertainty in peak daytime temperatures, with models converging on a range of 23–27°C amid variable cloud cover and northerly winds that may limit surface heating. Scattered precipitation chances and overcast conditions could suppress maximum readings below recent climatological norms for the dry season transition, while clearer intervals in some runs support brief warming to the mid-20s. Official monitoring from agencies like INMET will refine these projections through updated model consensus ahead of resolution, with traders pricing the tight spread between 23°C and 26°C to reflect genuine variability in convective activity and steering patterns rather than a single dominant outcome.
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 20 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 18, 2026, 8:55 AM ET
Volume
$47End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...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 20 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.Forecasts for São Paulo on September 20 show high uncertainty in peak daytime temperatures, with models converging on a range of 23–27°C amid variable cloud cover and northerly winds that may limit surface heating. Scattered precipitation chances and overcast conditions could suppress maximum readings below recent climatological norms for the dry season transition, while clearer intervals in some runs support brief warming to the mid-20s. Official monitoring from agencies like INMET will refine these projections through updated model consensus ahead of resolution, with traders pricing the tight spread between 23°C and 26°C to reflect genuine variability in convective activity and steering patterns rather than a single dominant outcome.
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 20 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
$47End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Forecasts for São Paulo on September 20 show high uncertainty in peak daytime temperatures, with models converging on a range of 23–27°C amid variable cloud cover and northerly winds that may limit surface heating. Scattered precipitation chances and overcast conditions could suppress maximum readings below recent climatological norms for the dry season transition, while clearer intervals in some runs support brief warming to the mid-20s. Official monitoring from agencies like INMET will refine these projections through updated model consensus ahead of resolution, with traders pricing the tight spread between 23°C and 26°C to reflect genuine variability in convective activity and steering patterns rather than a single dominant outcome.
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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