Official forecasts from meteorological models, including those aligned with agencies like AEMET and international ensembles, indicate radiative cooling under clear skies will drive Madrid's minimum temperature on September 7 to 20°C or below. High-pressure dominance and light winds favor efficient nocturnal heat loss from the surface, consistent with climatological September patterns where overnight lows often dip near or below this threshold after warm days. Market-implied odds reflect this strong model consensus backed by real capital at risk. A realistic challenge would require an unexpected warm advection or revised observational data from urban heat island effects altering the recorded minimum before 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 Madrid on September 7?
20°C or below 100.0%
21°C <1%
22°C <1%
23°C <1%
$1,153 Vol.
$1,153 Vol.
20°C or below
100%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
20°C or below 100.0%
21°C <1%
22°C <1%
23°C <1%
$1,153 Vol.
$1,153 Vol.
20°C or below
100%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°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=lemd
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, 12:30 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
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=lemd
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=lemdResolver
0x69c47De9D...Official forecasts from meteorological models, including those aligned with agencies like AEMET and international ensembles, indicate radiative cooling under clear skies will drive Madrid's minimum temperature on September 7 to 20°C or below. High-pressure dominance and light winds favor efficient nocturnal heat loss from the surface, consistent with climatological September patterns where overnight lows often dip near or below this threshold after warm days. Market-implied odds reflect this strong model consensus backed by real capital at risk. A realistic challenge would require an unexpected warm advection or revised observational data from urban heat island effects altering the recorded minimum before 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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