Recent polar air mass advection into southeastern Brazil, following a cold front passage, has tightened forecasts for São Paulo's August 24 minimum by enhancing radiative cooling under increased cloud cover and southeasterly maritime flow. Model consensus from agencies like INMET points to overnight lows clustered near 12–14 °C, with subtle differences hinging on exact cloud persistence, boundary-layer moisture, and urban heat-island modulation of the urban heat island effect. Trader-implied probabilities reflect this narrow scientific uncertainty range, with 13 °C and 14 °C leading at 33.5 % each. Updated numerical weather prediction runs and official minimum observations reported overnight will provide the decisive resolution data.
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 August 24?
19°C or higher 53%
18°C 36%
13°C 34%
14°C 34%
9°C or below
<1%
10°C
<1%
11°C
24%
12°C
27%
13°C
34%
14°C
34%
15°C
27%
16°C
24%
17°C
1%
18°C
36%
19°C or higher
53%
19°C or higher 53%
18°C 36%
13°C 34%
14°C 34%
9°C or below
<1%
10°C
<1%
11°C
24%
12°C
27%
13°C
34%
14°C
34%
15°C
27%
16°C
24%
17°C
1%
18°C
36%
19°C or higher
53%
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
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 22, 2026, 9:28 PM 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
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 polar air mass advection into southeastern Brazil, following a cold front passage, has tightened forecasts for São Paulo's August 24 minimum by enhancing radiative cooling under increased cloud cover and southeasterly maritime flow. Model consensus from agencies like INMET points to overnight lows clustered near 12–14 °C, with subtle differences hinging on exact cloud persistence, boundary-layer moisture, and urban heat-island modulation of the urban heat island effect. Trader-implied probabilities reflect this narrow scientific uncertainty range, with 13 °C and 14 °C leading at 33.5 % each. Updated numerical weather prediction runs and official minimum observations reported overnight will provide the decisive resolution data.
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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