Recent passage of a strong cold front and associated polar air mass has sharply lowered temperatures across São Paulo, with observed and forecast minima near 7–10°C on September 6–7 under persistent cloud cover and southeasterly flow. By September 8, high-pressure building behind the front is expected to moderate conditions, with model consensus pointing to overnight lows of 8–12°C under partly to mostly cloudy skies and lighter easterly winds, though timing of warming and residual moisture introduce spread. Official guidance from sources such as INMET and international ensembles shows this range, contrasting with historical early-September averages near 14–15°C. Trader sentiment remains split between 17°C-or-higher and single-digit outcomes because small shifts in cloud timing or wind could push the daily minimum across key thresholds before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Sao Paulo on September 8?
14°C 48%
12°C 31%
11°C 27%
10°C 26%
7°C or below
15%
8°C
20%
9°C
25%
10°C
26%
11°C
27%
12°C
31%
13°C
26%
14°C
48%
15°C
20%
16°C
18%
17°C or higher
18%
14°C 48%
12°C 31%
11°C 27%
10°C 26%
7°C or below
15%
8°C
20%
9°C
25%
10°C
26%
11°C
27%
12°C
31%
13°C
26%
14°C
48%
15°C
20%
16°C
18%
17°C or higher
18%
The resolution source for this market will be information from NOAA, specifically the lowest 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 6, 2026, 8:28 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the lowest 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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent passage of a strong cold front and associated polar air mass has sharply lowered temperatures across São Paulo, with observed and forecast minima near 7–10°C on September 6–7 under persistent cloud cover and southeasterly flow. By September 8, high-pressure building behind the front is expected to moderate conditions, with model consensus pointing to overnight lows of 8–12°C under partly to mostly cloudy skies and lighter easterly winds, though timing of warming and residual moisture introduce spread. Official guidance from sources such as INMET and international ensembles shows this range, contrasting with historical early-September averages near 14–15°C. Trader sentiment remains split between 17°C-or-higher and single-digit outcomes because small shifts in cloud timing or wind could push the daily minimum across key thresholds 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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