Recent atmospheric conditions and forecast model consensus from Spanish meteorological authorities position 22°C as the leading outcome for Madrid’s daily maximum temperature, with the 58.5% market-implied probability reflecting stable high-pressure influence and moderate northerly flow that restricts strong daytime heating. Observational data through mid-morning show temperatures climbing steadily but remaining below seasonal peaks, while ensemble runs indicate only modest potential for 23°C if afternoon insolation increases. Lower probabilities for 21°C or below align with the current warming trend, and the slim odds above 24°C reflect limited moisture and wind shear that historically suppress rapid temperature spikes in the region during mid-May.
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 May 17?
22°C 57%
23°C 24%
21°C 19%
24°C 4.1%
$30,009 Vol.
$30,009 Vol.
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
19%
22°C
57%
23°C
24%
24°C
4%
25°C
1%
26°C
<1%
27°C or higher
<1%
22°C 57%
23°C 24%
21°C 19%
24°C 4.1%
$30,009 Vol.
$30,009 Vol.
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
19%
22°C
57%
23°C
24%
24°C
4%
25°C
1%
26°C
<1%
27°C or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Adolfo Suárez Madrid-Barajas Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/es/madrid/LEMD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 15, 2026, 12:04 AM ET
Resolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDThe resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Adolfo Suárez Madrid-Barajas Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/es/madrid/LEMD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDRecent atmospheric conditions and forecast model consensus from Spanish meteorological authorities position 22°C as the leading outcome for Madrid’s daily maximum temperature, with the 58.5% market-implied probability reflecting stable high-pressure influence and moderate northerly flow that restricts strong daytime heating. Observational data through mid-morning show temperatures climbing steadily but remaining below seasonal peaks, while ensemble runs indicate only modest potential for 23°C if afternoon insolation increases. Lower probabilities for 21°C or below align with the current warming trend, and the slim odds above 24°C reflect limited moisture and wind shear that historically suppress rapid temperature spikes in the region during mid-May.
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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