Recent passage of a cold front and influx of polar air over southeastern Brazil has driven market-implied odds toward a 9–11°C range for São Paulo’s September 7 minimum, with 10°C leading at 38%. Official forecasts from sources including Climatempo and numerical models indicate overnight stabilization under mostly cloudy skies with light southeast winds, producing lows near 10°C after daytime maxima around 12–15°C. Ensemble spread in temperature guidance and minor variations in cloud cover or wind timing introduce uncertainty between 9°C and 11°C outcomes. Traders weigh these factors against historical September minima while awaiting final INMET station readings for 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 7?
5°C or below 56%
15°C or higher 56%
10°C 52%
7°C 49%
5°C or below
56%
6°C
15%
7°C
49%
8°C
25%
9°C
32%
10°C
38%
11°C
28%
12°C
49%
13°C
49%
14°C
10%
15°C or higher
56%
5°C or below 56%
15°C or higher 56%
10°C 52%
7°C 49%
5°C or below
56%
6°C
15%
7°C
49%
8°C
25%
9°C
32%
10°C
38%
11°C
28%
12°C
49%
13°C
49%
14°C
10%
15°C or higher
56%
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 5, 2026, 8:29 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 cold front and influx of polar air over southeastern Brazil has driven market-implied odds toward a 9–11°C range for São Paulo’s September 7 minimum, with 10°C leading at 38%. Official forecasts from sources including Climatempo and numerical models indicate overnight stabilization under mostly cloudy skies with light southeast winds, producing lows near 10°C after daytime maxima around 12–15°C. Ensemble spread in temperature guidance and minor variations in cloud cover or wind timing introduce uncertainty between 9°C and 11°C outcomes. Traders weigh these factors against historical September minima while awaiting final INMET station readings for 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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