Recent forecasts from multiple meteorological agencies indicate a high near 19–20°C for São Paulo on September 16, 2026, aligning with the market’s leading outcomes of 20°C (50.5%) and 21°C (26.5%). Persistent cloud cover, southeasterly winds of 10–20 km/h, and elevated humidity have limited daytime solar heating, keeping temperatures below the September climatological average of roughly 23°C. Model runs show modest afternoon warming to the low 20s under mostly overcast conditions, with minimal precipitation risk. Traders appear to weigh these atmospheric constraints against typical spring variability, where clearer skies or shifts in wind patterns could briefly push readings 1–2°C higher before resolution.
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 16?
Highest temperature in Sao Paulo on September 16?
20°C 51%
19°C 24%
21°C 24%
22°C 3%
$25,161 Vol.
$25,161 Vol.
Sep 16, 2026
14°C or below
<1%
15°C
<1%
16°C
<1%
17°C
1%
18°C
1%
19°C
24%
20°C
51%
21°C
24%
22°C
3%
23°C
1%
24°C or higher
<1%
20°C 51%
19°C 24%
21°C 24%
22°C 3%
$25,161 Vol.
$25,161 Vol.
Sep 16, 2026
14°C or below
$1,747 Vol.
<1%
15°C
$1,496 Vol.
<1%
16°C
$1,073 Vol.
<1%
17°C
$2,593 Vol.
1%
18°C
$2,378 Vol.
1%
19°C
$4,565 Vol.
24%
20°C
$2,736 Vol.
51%
21°C
$2,754 Vol.
24%
22°C
$1,895 Vol.
3%
23°C
$2,441 Vol.
1%
24°C or higher
$1,482 Vol.
<1%
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 16 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.Recent forecasts from multiple meteorological agencies indicate a high near 19–20°C for São Paulo on September 16, 2026, aligning with the market’s leading outcomes of 20°C (50.5%) and 21°C (26.5%). Persistent cloud cover, southeasterly winds of 10–20 km/h, and elevated humidity have limited daytime solar heating, keeping temperatures below the September climatological average of roughly 23°C. Model runs show modest afternoon warming to the low 20s under mostly overcast conditions, with minimal precipitation risk. Traders appear to weigh these atmospheric constraints against typical spring variability, where clearer skies or shifts in wind patterns could briefly push readings 1–2°C higher before resolution.
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 16 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 14, 2026, 8:55 AM ET
Volume
$25,161End Date
Sep 16, 2026Market Opened
Sep 14, 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 16 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.Recent forecasts from multiple meteorological agencies indicate a high near 19–20°C for São Paulo on September 16, 2026, aligning with the market’s leading outcomes of 20°C (50.5%) and 21°C (26.5%). Persistent cloud cover, southeasterly winds of 10–20 km/h, and elevated humidity have limited daytime solar heating, keeping temperatures below the September climatological average of roughly 23°C. Model runs show modest afternoon warming to the low 20s under mostly overcast conditions, with minimal precipitation risk. Traders appear to weigh these atmospheric constraints against typical spring variability, where clearer skies or shifts in wind patterns could briefly push readings 1–2°C higher before resolution.
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 16 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
$25,161End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent forecasts from multiple meteorological agencies indicate a high near 19–20°C for São Paulo on September 16, 2026, aligning with the market’s leading outcomes of 20°C (50.5%) and 21°C (26.5%). Persistent cloud cover, southeasterly winds of 10–20 km/h, and elevated humidity have limited daytime solar heating, keeping temperatures below the September climatological average of roughly 23°C. Model runs show modest afternoon warming to the low 20s under mostly overcast conditions, with minimal precipitation risk. Traders appear to weigh these atmospheric constraints against typical spring variability, where clearer skies or shifts in wind patterns could briefly push readings 1–2°C higher before resolution.
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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