**Current forecasts for São Paulo on August 30 indicate a minimum temperature likely in the 19–22°C range, driven by a persistent warm, dry air mass that has produced daytime highs above 30°C with low humidity.** A cold front tied to an extratropical cyclone is approaching from the south but is not expected to deliver significant cooling or widespread rain until September 1, leaving overnight radiative cooling as the main control on the daily minimum. Model consensus from sources including Meteoblue, Met Office, and regional agencies shows early-morning lows near 19–21°C under partly cloudy skies with light winds and a low chance of scattered showers, which would moderate but not sharply suppress cooling. Historical August minima average around 12°C, yet the current setup—elevated dew points and residual heat from prior days—supports higher values. The tight clustering of market-implied odds around 17–19°C reflects uncertainty in exact frontal timing, cloud-cover evolution, and local urban heat-island effects that could nudge the overnight low a degree or two in either direction before resolution. Updated model runs and official briefings on August 30 will be the key data points for traders monitoring this narrow band.
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 30?
Lowest temperature in Sao Paulo on August 30?
27°C or higher 63%
26°C 54%
25°C 52%
18°C 46%
NEW
NEW
Aug 30, 2026
17°C or below
43%
18°C
46%
19°C
40%
20°C
35%
21°C
35%
22°C
7%
23°C
6%
24°C
28%
25°C
52%
26°C
54%
27°C or higher
63%
27°C or higher 63%
26°C 54%
25°C 52%
18°C 46%
NEW
NEW
Aug 30, 2026
17°C or below
$0 Vol.
43%
18°C
$0 Vol.
46%
19°C
$0 Vol.
40%
20°C
$0 Vol.
35%
21°C
$0 Vol.
35%
22°C
$15 Vol.
7%
23°C
$40 Vol.
6%
24°C
$9 Vol.
28%
25°C
$10 Vol.
52%
26°C
$15 Vol.
54%
27°C or higher
$145 Vol.
63%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
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.
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.**Current forecasts for São Paulo on August 30 indicate a minimum temperature likely in the 19–22°C range, driven by a persistent warm, dry air mass that has produced daytime highs above 30°C with low humidity.** A cold front tied to an extratropical cyclone is approaching from the south but is not expected to deliver significant cooling or widespread rain until September 1, leaving overnight radiative cooling as the main control on the daily minimum.
Model consensus from sources including Meteoblue, Met Office, and regional agencies shows early-morning lows near 19–21°C under partly cloudy skies with light winds and a low chance of scattered showers, which would moderate but not sharply suppress cooling. Historical August minima average around 12°C, yet the current setup—elevated dew points and residual heat from prior days—supports higher values. The tight clustering of market-implied odds around 17–19°C reflects uncertainty in exact frontal timing, cloud-cover evolution, and local urban heat-island effects that could nudge the overnight low a degree or two in either direction before resolution. Updated model runs and official briefings on August 30 will be the key data points for traders monitoring this narrow band.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
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.
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.
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.
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 28, 2026, 2:29 PM ET
Volume
$234End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:29 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
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.
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.**Current forecasts for São Paulo on August 30 indicate a minimum temperature likely in the 19–22°C range, driven by a persistent warm, dry air mass that has produced daytime highs above 30°C with low humidity.** A cold front tied to an extratropical cyclone is approaching from the south but is not expected to deliver significant cooling or widespread rain until September 1, leaving overnight radiative cooling as the main control on the daily minimum.
Model consensus from sources including Meteoblue, Met Office, and regional agencies shows early-morning lows near 19–21°C under partly cloudy skies with light winds and a low chance of scattered showers, which would moderate but not sharply suppress cooling. Historical August minima average around 12°C, yet the current setup—elevated dew points and residual heat from prior days—supports higher values. The tight clustering of market-implied odds around 17–19°C reflects uncertainty in exact frontal timing, cloud-cover evolution, and local urban heat-island effects that could nudge the overnight low a degree or two in either direction before resolution. Updated model runs and official briefings on August 30 will be the key data points for traders monitoring this narrow band.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
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.
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.
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.
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.
Volume
$234End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:29 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...**Current forecasts for São Paulo on August 30 indicate a minimum temperature likely in the 19–22°C range, driven by a persistent warm, dry air mass that has produced daytime highs above 30°C with low humidity.** A cold front tied to an extratropical cyclone is approaching from the south but is not expected to deliver significant cooling or widespread rain until September 1, leaving overnight radiative cooling as the main control on the daily minimum. Model consensus from sources including Meteoblue, Met Office, and regional agencies shows early-morning lows near 19–21°C under partly cloudy skies with light winds and a low chance of scattered showers, which would moderate but not sharply suppress cooling. Historical August minima average around 12°C, yet the current setup—elevated dew points and residual heat from prior days—supports higher values. The tight clustering of market-implied odds around 17–19°C reflects uncertainty in exact frontal timing, cloud-cover evolution, and local urban heat-island effects that could nudge the overnight low a degree or two in either direction before resolution. Updated model runs and official briefings on August 30 will be the key data points for traders monitoring this narrow band.
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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