A cold front and associated polar air mass are driving São Paulo’s forecast for September 7, 2026, with official models showing suppressed daytime highs near 12–15 °C amid persistent cloud cover, southeasterly winds, and light rain or drizzle. This advection of cooler mid-latitude air, following several days of warmer conditions, reduces solar insolation and limits boundary-layer warming, keeping maxima well below September climatology. Market-implied probabilities cluster tightly around 13–14 °C because ensemble guidance shows only modest spread in peak temperature once the front passes, though slight differences in precipitation timing or cloud thickness could shift the daily high by 1–2 °C. Updated runs from regional and global models over the next 48 hours will refine the exact peak 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 7?
Highest temperature in Sao Paulo on September 7?
14°C 32%
13°C 31%
12°C 12%
15°C 11%
NEW
NEW
Sep 7, 2026
6°C or below
4%
7°C
4%
8°C
4%
9°C
4%
10°C
2%
11°C
6%
12°C
12%
13°C
31%
14°C
32%
15°C
11%
16°C or higher
8%
14°C 32%
13°C 31%
12°C 12%
15°C 11%
NEW
NEW
Sep 7, 2026
6°C or below
$0 Vol.
4%
7°C
$0 Vol.
4%
8°C
$0 Vol.
4%
9°C
$0 Vol.
4%
10°C
$38 Vol.
2%
11°C
$0 Vol.
6%
12°C
$0 Vol.
12%
13°C
$0 Vol.
31%
14°C
$26 Vol.
32%
15°C
$0 Vol.
11%
16°C or higher
$29 Vol.
8%
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 7 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.A cold front and associated polar air mass are driving São Paulo’s forecast for September 7, 2026, with official models showing suppressed daytime highs near 12–15 °C amid persistent cloud cover, southeasterly winds, and light rain or drizzle. This advection of cooler mid-latitude air, following several days of warmer conditions, reduces solar insolation and limits boundary-layer warming, keeping maxima well below September climatology. Market-implied probabilities cluster tightly around 13–14 °C because ensemble guidance shows only modest spread in peak temperature once the front passes, though slight differences in precipitation timing or cloud thickness could shift the daily high by 1–2 °C. Updated runs from regional and global models over the next 48 hours will refine the exact peak 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 7 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 5, 2026, 8:55 AM ET
Volume
$94End Date
Sep 7, 2026Market Opened
Sep 5, 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 7 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.A cold front and associated polar air mass are driving São Paulo’s forecast for September 7, 2026, with official models showing suppressed daytime highs near 12–15 °C amid persistent cloud cover, southeasterly winds, and light rain or drizzle. This advection of cooler mid-latitude air, following several days of warmer conditions, reduces solar insolation and limits boundary-layer warming, keeping maxima well below September climatology. Market-implied probabilities cluster tightly around 13–14 °C because ensemble guidance shows only modest spread in peak temperature once the front passes, though slight differences in precipitation timing or cloud thickness could shift the daily high by 1–2 °C. Updated runs from regional and global models over the next 48 hours will refine the exact peak 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 7 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
$94End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...A cold front and associated polar air mass are driving São Paulo’s forecast for September 7, 2026, with official models showing suppressed daytime highs near 12–15 °C amid persistent cloud cover, southeasterly winds, and light rain or drizzle. This advection of cooler mid-latitude air, following several days of warmer conditions, reduces solar insolation and limits boundary-layer warming, keeping maxima well below September climatology. Market-implied probabilities cluster tightly around 13–14 °C because ensemble guidance shows only modest spread in peak temperature once the front passes, though slight differences in precipitation timing or cloud thickness could shift the daily high by 1–2 °C. Updated runs from regional and global models over the next 48 hours will refine the exact peak 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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