Recent official forecasts from Brazilian meteorological sources, including IPMet, indicate a minimum temperature in São Paulo on September 8 around 11–13 °C, driven by persistent advection of cooler maritime air from the southeast under variable cloud cover and light winds that limit nocturnal radiative cooling. High humidity and scattered showers from ongoing instability further moderate temperature drops compared to clearer conditions. Numerical models show modest divergence in exact overnight minima due to uncertainties in cloud timing and boundary-layer mixing, explaining the tight clustering of market-implied probabilities between 11 °C and 13 °C. Updated model runs and INMET observations through the evening of September 7 will provide the final 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 September 8?
11°C 31%
12°C 31%
13°C 27%
10°C 26%
7°C or below
6%
8°C
3%
9°C
9%
10°C
26%
11°C
31%
12°C
31%
13°C
27%
14°C
11%
15°C
5%
16°C
8%
17°C or higher
1%
11°C 31%
12°C 31%
13°C 27%
10°C 26%
7°C or below
6%
8°C
3%
9°C
9%
10°C
26%
11°C
31%
12°C
31%
13°C
27%
14°C
11%
15°C
5%
16°C
8%
17°C or higher
1%
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 official forecasts from Brazilian meteorological sources, including IPMet, indicate a minimum temperature in São Paulo on September 8 around 11–13 °C, driven by persistent advection of cooler maritime air from the southeast under variable cloud cover and light winds that limit nocturnal radiative cooling. High humidity and scattered showers from ongoing instability further moderate temperature drops compared to clearer conditions. Numerical models show modest divergence in exact overnight minima due to uncertainties in cloud timing and boundary-layer mixing, explaining the tight clustering of market-implied probabilities between 11 °C and 13 °C. Updated model runs and INMET observations through the evening of September 7 will provide the final 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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