Recent forecast models from agencies including the Met Office and GFS indicate a highest temperature in Amsterdam on September 23 most likely between 19–21 °C, with afternoon peaks near 20 °C under increasing southwesterly flow and variable cloud cover. This aligns with the market’s tight clustering around 20–21 °C outcomes. Key differentiating factors include the precise timing of any showers, which could suppress the daily maximum by 1–2 °C, and the strength of afternoon mixing; clearer intervals would favor the upper end of the range. Historical September averages near 18 °C provide context, while current ensemble guidance shows modest spread typical for a two-day horizon, leaving room for small revisions ahead of resolution.
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 23?
Highest temperature in Amsterdam on September 23?
20°C 30%
21°C 26%
19°C 20%
18°C 19%
NEW
NEW
Sep 23, 2026
14°C or below
2%
15°C
2%
16°C
4%
17°C
4%
18°C
19%
19°C
20%
20°C
30%
21°C
26%
22°C
12%
23°C
9%
24°C or higher
3%
20°C 30%
21°C 26%
19°C 20%
18°C 19%
NEW
NEW
Sep 23, 2026
14°C or below
$0 Vol.
2%
15°C
$5 Vol.
2%
16°C
$5 Vol.
4%
17°C
$0 Vol.
4%
18°C
$0 Vol.
19%
19°C
$0 Vol.
20%
20°C
$0 Vol.
30%
21°C
$0 Vol.
26%
22°C
$0 Vol.
12%
23°C
$3 Vol.
9%
24°C or higher
$0 Vol.
3%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 23 Sep '26.
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.Recent forecast models from agencies including the Met Office and GFS indicate a highest temperature in Amsterdam on September 23 most likely between 19–21 °C, with afternoon peaks near 20 °C under increasing southwesterly flow and variable cloud cover. This aligns with the market’s tight clustering around 20–21 °C outcomes. Key differentiating factors include the precise timing of any showers, which could suppress the daily maximum by 1–2 °C, and the strength of afternoon mixing; clearer intervals would favor the upper end of the range. Historical September averages near 18 °C provide context, while current ensemble guidance shows modest spread typical for a two-day horizon, leaving room for small revisions ahead of resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 23 Sep '26.
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.
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 21, 2026, 12:58 AM ET
Volume
$13End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 23 Sep '26.
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.Recent forecast models from agencies including the Met Office and GFS indicate a highest temperature in Amsterdam on September 23 most likely between 19–21 °C, with afternoon peaks near 20 °C under increasing southwesterly flow and variable cloud cover. This aligns with the market’s tight clustering around 20–21 °C outcomes. Key differentiating factors include the precise timing of any showers, which could suppress the daily maximum by 1–2 °C, and the strength of afternoon mixing; clearer intervals would favor the upper end of the range. Historical September averages near 18 °C provide context, while current ensemble guidance shows modest spread typical for a two-day horizon, leaving room for small revisions ahead of resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 23 Sep '26.
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.
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.
Volume
$13End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Recent forecast models from agencies including the Met Office and GFS indicate a highest temperature in Amsterdam on September 23 most likely between 19–21 °C, with afternoon peaks near 20 °C under increasing southwesterly flow and variable cloud cover. This aligns with the market’s tight clustering around 20–21 °C outcomes. Key differentiating factors include the precise timing of any showers, which could suppress the daily maximum by 1–2 °C, and the strength of afternoon mixing; clearer intervals would favor the upper end of the range. Historical September averages near 18 °C provide context, while current ensemble guidance shows modest spread typical for a two-day horizon, leaving room for small revisions ahead of resolution.
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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