Latest ECMWF and KNMI model runs point to a modest high near 20°C in Amsterdam on July 18, driven by stable high pressure and limited warm-air advection over the North Sea. Ensemble spreads remain tight around 19–21°C, with modest disagreement on boundary-layer mixing and daytime cloud cover creating the close market pricing between those buckets. Historical July maxima average roughly 22°C, but current steering patterns favor a slightly cooler regime. Updated model cycles and any observed shifts in sea-surface temperatures or upper-level ridging over the coming 48 hours will be the key catalysts that could tip probabilities toward 19°C or 21°C.
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 July 18?
19°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$70,854 Vol.
$70,854 Vol.
16°C or below
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C or higher
No
19°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$70,854 Vol.
$70,854 Vol.
16°C or below
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, 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 until the first data point for the following date has been published on the resolution source.
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: Jul 16, 2026, 1:04 AM ET
Resolution Source
https://www.wunderground.com/history/daily/nl/schiphol/EHAMResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Resolution Source
https://www.wunderground.com/history/daily/nl/schiphol/EHAMResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Latest ECMWF and KNMI model runs point to a modest high near 20°C in Amsterdam on July 18, driven by stable high pressure and limited warm-air advection over the North Sea. Ensemble spreads remain tight around 19–21°C, with modest disagreement on boundary-layer mixing and daytime cloud cover creating the close market pricing between those buckets. Historical July maxima average roughly 22°C, but current steering patterns favor a slightly cooler regime. Updated model cycles and any observed shifts in sea-surface temperatures or upper-level ridging over the coming 48 hours will be the key catalysts that could tip probabilities toward 19°C or 21°C.
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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