Trader consensus on Polymarket implies a 33.5% probability for Madrid's highest temperature reaching exactly 17°C on March 28, with 18°C close behind at 23.5%, driven by the latest AEMET and ECMWF model runs showing peak daytime highs in the 16–19°C range under mild southerly flows. This positioning reflects recent stabilization after a cooler spell earlier in the week, where Atlantic high-pressure ridges have boosted spring-like warmth above the late-March climatological normal of about 16°C at Madrid-Barajas station. High uncertainty across outcomes stems from ensemble forecast spreads: clearer skies and low-level jet persistence favor 18–20°C, while increased cloud cover or weak fronts could cap at 15–16°C; extremes below 13°C or above 23°C face barriers from current upper-air patterns lacking cold outbreaks or heat domes. Watch AEMET's afternoon update for refined boundary-layer data.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Madrid on March 28?
Highest temperature in Madrid on March 28?
17°C 36%
18°C 22%
16°C 16%
19°C 9.6%
$20,823 Vol.
$20,823 Vol.
13°C or below
1%
14°C
1%
15°C
4%
16°C
16%
17°C
36%
18°C
22%
19°C
10%
20°C
3%
21°C
1%
22°C
1%
23°C or higher
1%
17°C 36%
18°C 22%
16°C 16%
19°C 9.6%
$20,823 Vol.
$20,823 Vol.
13°C or below
1%
14°C
1%
15°C
4%
16°C
16%
17°C
36%
18°C
22%
19°C
10%
20°C
3%
21°C
1%
22°C
1%
23°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: Mar 24, 2026, 6:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDResolver
0x69c47De9D...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.
Resolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDResolver
0x69c47De9D...Trader consensus on Polymarket implies a 33.5% probability for Madrid's highest temperature reaching exactly 17°C on March 28, with 18°C close behind at 23.5%, driven by the latest AEMET and ECMWF model runs showing peak daytime highs in the 16–19°C range under mild southerly flows. This positioning reflects recent stabilization after a cooler spell earlier in the week, where Atlantic high-pressure ridges have boosted spring-like warmth above the late-March climatological normal of about 16°C at Madrid-Barajas station. High uncertainty across outcomes stems from ensemble forecast spreads: clearer skies and low-level jet persistence favor 18–20°C, while increased cloud cover or weak fronts could cap at 15–16°C; extremes below 13°C or above 23°C face barriers from current upper-air patterns lacking cold outbreaks or heat domes. Watch AEMET's afternoon update for refined boundary-layer data.
Experimental AI-generated summary referencing Polymarket data · Updated
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