Recent forecasts for São Paulo show overnight lows on September 25 clustered between 14–18°C amid a transition from cooler, overcast conditions with southerly flow and scattered rain to more stable, partly clear skies. Model consensus from GFS and others indicates gradual warming from current 12–14°C readings, yet spread in radiational cooling under varying cloud cover and wind speeds creates the near-even split between sub-11°C and 20°C+ outcomes. Historical September minima average near 12°C, but recent above-average moisture and pressure rises favor moderation unless clearer skies enhance nocturnal drops. Updated runs from NHC-equivalent regional models and INMET briefings on the 24th will refine these thresholds ahead of 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 25?
Lowest temperature in Sao Paulo on September 25?
20°C or higher 92%
10°C or below 70%
11°C 39%
18°C 39%
NEW
NEW
Sep 25, 2026
10°C or below
70%
11°C
39%
12°C
21%
13°C
21%
14°C
22%
15°C
26%
16°C
28%
17°C
21%
18°C
39%
19°C
39%
20°C or higher
92%
20°C or higher 92%
10°C or below 70%
11°C 39%
18°C 39%
NEW
NEW
Sep 25, 2026
10°C or below
$10 Vol.
70%
11°C
$10 Vol.
39%
12°C
$0 Vol.
21%
13°C
$0 Vol.
21%
14°C
$0 Vol.
22%
15°C
$0 Vol.
26%
16°C
$0 Vol.
28%
17°C
$0 Vol.
21%
18°C
$10 Vol.
39%
19°C
$10 Vol.
39%
20°C or higher
$10 Vol.
92%
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 25 Sep '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.
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.Recent forecasts for São Paulo show overnight lows on September 25 clustered between 14–18°C amid a transition from cooler, overcast conditions with southerly flow and scattered rain to more stable, partly clear skies. Model consensus from GFS and others indicates gradual warming from current 12–14°C readings, yet spread in radiational cooling under varying cloud cover and wind speeds creates the near-even split between sub-11°C and 20°C+ outcomes. Historical September minima average near 12°C, but recent above-average moisture and pressure rises favor moderation unless clearer skies enhance nocturnal drops. Updated runs from NHC-equivalent regional models and INMET briefings on the 24th will refine these thresholds ahead of resolution.
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 25 Sep '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.
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.
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 23, 2026, 8:29 AM ET
Volume
$50End Date
Sep 25, 2026Market Opened
Sep 23, 2026, 8:29 AM 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 25 Sep '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.
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.Recent forecasts for São Paulo show overnight lows on September 25 clustered between 14–18°C amid a transition from cooler, overcast conditions with southerly flow and scattered rain to more stable, partly clear skies. Model consensus from GFS and others indicates gradual warming from current 12–14°C readings, yet spread in radiational cooling under varying cloud cover and wind speeds creates the near-even split between sub-11°C and 20°C+ outcomes. Historical September minima average near 12°C, but recent above-average moisture and pressure rises favor moderation unless clearer skies enhance nocturnal drops. Updated runs from NHC-equivalent regional models and INMET briefings on the 24th will refine these thresholds ahead of resolution.
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 25 Sep '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.
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.
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.
Volume
$50End Date
Sep 25, 2026Market Opened
Sep 23, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47de9d...Recent forecasts for São Paulo show overnight lows on September 25 clustered between 14–18°C amid a transition from cooler, overcast conditions with southerly flow and scattered rain to more stable, partly clear skies. Model consensus from GFS and others indicates gradual warming from current 12–14°C readings, yet spread in radiational cooling under varying cloud cover and wind speeds creates the near-even split between sub-11°C and 20°C+ outcomes. Historical September minima average near 12°C, but recent above-average moisture and pressure rises favor moderation unless clearer skies enhance nocturnal drops. Updated runs from NHC-equivalent regional models and INMET briefings on the 24th will refine these thresholds ahead of 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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