Strong model consensus and official forecasts from agencies like AEMET point to a maximum of 34°C in Madrid on September 22 under persistent high pressure, clear skies, and minimal cloud cover that promotes daytime heating without significant mixing or precipitation. This aligns with climatological expectations for late September in central Spain, where anticyclonic conditions often sustain temperatures several degrees above seasonal averages. Trader positioning at near-certainty for 34°C reflects aggregated real-time data from numerical weather prediction runs showing limited variability in peak values. A realistic challenge would require an unexpected late-day shift in steering flow, localized cooling from unmodeled cloud development, or a post-observation revision in official station readings that alters the recorded high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Madrid on September 22?
Highest temperature in Madrid on September 22?
34°C 100.0%
28°C or below <1%
29°C <1%
30°C <1%
$70,437 Vol.
$70,437 Vol.
Sep 22, 2026
28°C or below
<1%
29°C
<1%
30°C
<1%
31°C
<1%
32°C
<1%
33°C
<1%
34°C
100%
35°C
<1%
36°C
<1%
37°C
<1%
38°C or higher
<1%
34°C 100.0%
28°C or below <1%
29°C <1%
30°C <1%
$70,437 Vol.
$70,437 Vol.
Sep 22, 2026
28°C or below
$16,006 Vol.
<1%
29°C
$9,846 Vol.
<1%
30°C
$6,800 Vol.
<1%
31°C
$5,788 Vol.
<1%
32°C
$3,342 Vol.
<1%
33°C
$8,553 Vol.
<1%
34°C
$8,783 Vol.
100%
35°C
$8,647 Vol.
<1%
36°C
$2,349 Vol.
<1%
37°C
$167 Vol.
<1%
38°C or higher
$156 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 22 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.Strong model consensus and official forecasts from agencies like AEMET point to a maximum of 34°C in Madrid on September 22 under persistent high pressure, clear skies, and minimal cloud cover that promotes daytime heating without significant mixing or precipitation. This aligns with climatological expectations for late September in central Spain, where anticyclonic conditions often sustain temperatures several degrees above seasonal averages. Trader positioning at near-certainty for 34°C reflects aggregated real-time data from numerical weather prediction runs showing limited variability in peak values. A realistic challenge would require an unexpected late-day shift in steering flow, localized cooling from unmodeled cloud development, or a post-observation revision in official station readings that alters the recorded high.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 22 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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 20, 2026, 12:57 AM ET
Volume
$70,437End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 22 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.Strong model consensus and official forecasts from agencies like AEMET point to a maximum of 34°C in Madrid on September 22 under persistent high pressure, clear skies, and minimal cloud cover that promotes daytime heating without significant mixing or precipitation. This aligns with climatological expectations for late September in central Spain, where anticyclonic conditions often sustain temperatures several degrees above seasonal averages. Trader positioning at near-certainty for 34°C reflects aggregated real-time data from numerical weather prediction runs showing limited variability in peak values. A realistic challenge would require an unexpected late-day shift in steering flow, localized cooling from unmodeled cloud development, or a post-observation revision in official station readings that alters the recorded high.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 22 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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
$70,437End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
0x69c47De9D...Strong model consensus and official forecasts from agencies like AEMET point to a maximum of 34°C in Madrid on September 22 under persistent high pressure, clear skies, and minimal cloud cover that promotes daytime heating without significant mixing or precipitation. This aligns with climatological expectations for late September in central Spain, where anticyclonic conditions often sustain temperatures several degrees above seasonal averages. Trader positioning at near-certainty for 34°C reflects aggregated real-time data from numerical weather prediction runs showing limited variability in peak values. A realistic challenge would require an unexpected late-day shift in steering flow, localized cooling from unmodeled cloud development, or a post-observation revision in official station readings that alters the recorded high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions