Recent forecast runs from major models, including GFS, point to clear skies and stable high pressure over Madrid through September 20, supporting overnight radiative cooling with minimum temperatures near 15–16°C. This aligns with the historical average low of 14.8°C for the date while current conditions remain slightly above normal amid a warm late-summer pattern. Trader consensus favors the 14°C-or-below outcome at 54.5% implied probability due to model uncertainty ranges and potential for localized cooling under light winds, though probabilities drop sharply above 16°C as ensemble guidance shows limited downside risk. No significant weather systems are expected to alter the outlook 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 20?
Lowest temperature in Madrid on September 20?
14°C or below 57%
15°C 22%
16°C 19%
18°C 7%
NEW
NEW
Sep 20, 2026
14°C or below
57%
15°C
22%
16°C
19%
17°C
7%
18°C
7%
19°C
4%
20°C
2%
21°C
2%
22°C
2%
23°C
2%
24°C or higher
2%
14°C or below 57%
15°C 22%
16°C 19%
18°C 7%
NEW
NEW
Sep 20, 2026
14°C or below
$0 Vol.
57%
15°C
$0 Vol.
22%
16°C
$0 Vol.
19%
17°C
$0 Vol.
7%
18°C
$0 Vol.
7%
19°C
$0 Vol.
4%
20°C
$0 Vol.
2%
21°C
$0 Vol.
2%
22°C
$0 Vol.
2%
23°C
$0 Vol.
2%
24°C or higher
$0 Vol.
2%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 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=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.Recent forecast runs from major models, including GFS, point to clear skies and stable high pressure over Madrid through September 20, supporting overnight radiative cooling with minimum temperatures near 15–16°C. This aligns with the historical average low of 14.8°C for the date while current conditions remain slightly above normal amid a warm late-summer pattern. Trader consensus favors the 14°C-or-below outcome at 54.5% implied probability due to model uncertainty ranges and potential for localized cooling under light winds, though probabilities drop sharply above 16°C as ensemble guidance shows limited downside risk. No significant weather systems are expected to alter the outlook before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 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=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.
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 18, 2026, 12:30 AM ET
Volume
$0End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 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=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.Recent forecast runs from major models, including GFS, point to clear skies and stable high pressure over Madrid through September 20, supporting overnight radiative cooling with minimum temperatures near 15–16°C. This aligns with the historical average low of 14.8°C for the date while current conditions remain slightly above normal amid a warm late-summer pattern. Trader consensus favors the 14°C-or-below outcome at 54.5% implied probability due to model uncertainty ranges and potential for localized cooling under light winds, though probabilities drop sharply above 16°C as ensemble guidance shows limited downside risk. No significant weather systems are expected to alter the outlook before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 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=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.
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.
Volume
$0End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
0x69c47De9D...Recent forecast runs from major models, including GFS, point to clear skies and stable high pressure over Madrid through September 20, supporting overnight radiative cooling with minimum temperatures near 15–16°C. This aligns with the historical average low of 14.8°C for the date while current conditions remain slightly above normal amid a warm late-summer pattern. Trader consensus favors the 14°C-or-below outcome at 54.5% implied probability due to model uncertainty ranges and potential for localized cooling under light winds, though probabilities drop sharply above 16°C as ensemble guidance shows limited downside risk. No significant weather systems are expected to alter the outlook 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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