Trader consensus on Polymarket overwhelmingly favors 18°C (99.7% implied probability) for Amsterdam's highest temperature on May 9, 2026, driven by official KNMI observations at Schiphol Airport—the market resolution source—showing midday readings of 15.2°C under clear-to-partly cloudy skies, aligning with short-range forecasts and ECMWF ensemble means projecting a peak near 18°C amid light southeast winds and half-to-heavy cloud cover limiting solar insolation. UK Met Office hourly guidance corroborates this, with 18°C expected from 3–6 p.m. before evening cooling. Realistic challenges include unexpected clearing for brief sunbursts pushing to 19°C, though persistent overcast conditions and early May climatological averages around 17°C make this unlikely; final KNMI daily data will confirm as observations continue through sunset.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Amsterdam on May 9?
Highest temperature in Amsterdam on May 9?
18°C 99.8%
19°C <1%
20°C <1%
21°C <1%
$47,030 Vol.
$47,030 Vol.
18°C
100%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
18°C 99.8%
19°C <1%
20°C <1%
21°C <1%
$47,030 Vol.
$47,030 Vol.
18°C
100%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°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 Amsterdam Airport Schiphol Station once information is finalized, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
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 7, 2026, 12:40 AM ET
Resolution Source
https://www.wunderground.com/history/daily/nl/schiphol/EHAMResolver
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 Amsterdam Airport Schiphol Station once information is finalized, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
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/nl/schiphol/EHAMResolver
0x69c47De9D...Trader consensus on Polymarket overwhelmingly favors 18°C (99.7% implied probability) for Amsterdam's highest temperature on May 9, 2026, driven by official KNMI observations at Schiphol Airport—the market resolution source—showing midday readings of 15.2°C under clear-to-partly cloudy skies, aligning with short-range forecasts and ECMWF ensemble means projecting a peak near 18°C amid light southeast winds and half-to-heavy cloud cover limiting solar insolation. UK Met Office hourly guidance corroborates this, with 18°C expected from 3–6 p.m. before evening cooling. Realistic challenges include unexpected clearing for brief sunbursts pushing to 19°C, though persistent overcast conditions and early May climatological averages around 17°C make this unlikely; final KNMI daily data will confirm as observations continue through sunset.
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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