Recent temperature observations from official Dutch meteorological stations have locked in a daily maximum of 25°C for Amsterdam, driving the near-certain market consensus. Stable high-pressure conditions and moderate Atlantic airflow have prevented further warming or cooling spikes, aligning with seasonal norms for mid-September. Model consensus from European weather services shows minimal divergence in afternoon readings, supporting trader confidence in the exact threshold. Resolution hinges on final verified data releases, with any post-observation revisions or instrument discrepancies representing the only realistic paths to a different outcome.
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 September 15?
25°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$64,162 Vol.
$64,162 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C
No
29°C or higher
No
25°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$64,162 Vol.
$64,162 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C
No
29°C or higher
No
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=eham
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 13, 2026, 12:58 PM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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=eham
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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent temperature observations from official Dutch meteorological stations have locked in a daily maximum of 25°C for Amsterdam, driving the near-certain market consensus. Stable high-pressure conditions and moderate Atlantic airflow have prevented further warming or cooling spikes, aligning with seasonal norms for mid-September. Model consensus from European weather services shows minimal divergence in afternoon readings, supporting trader confidence in the exact threshold. Resolution hinges on final verified data releases, with any post-observation revisions or instrument discrepancies representing the only realistic paths to a different outcome.
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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