Current ensemble forecasts from regional models indicate a highest temperature near 19°C in Amsterdam on September 20, driven by a stable westerly flow of mild maritime air under mostly cloudy skies with limited diurnal heating. Recent model runs show afternoon maxima clustered between 18–20°C, consistent with September climatology where daily highs average around 18.6°C at Schiphol and decline through the month. Light showers or variable cloud cover may further suppress peaks, while no strong anticyclone or warm advection is expected to push readings higher. Updated high-resolution guidance and official observations closer to the date will refine the precise maximum, which determines market resolution. Trader positioning reflects this narrow uncertainty range.
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 20?
Highest temperature in Amsterdam on September 20?
19°C 55%
20°C 27%
18°C 19%
17°C 11%
NEW
NEW
Sep 20, 2026
14°C or below
<1%
15°C
3%
16°C
5%
17°C
11%
18°C
15%
19°C
55%
20°C
27%
21°C
10%
22°C
2%
23°C
2%
24°C or higher
<1%
19°C 55%
20°C 27%
18°C 19%
17°C 11%
NEW
NEW
Sep 20, 2026
14°C or below
$0 Vol.
<1%
15°C
$0 Vol.
3%
16°C
$0 Vol.
5%
17°C
$8 Vol.
11%
18°C
$6 Vol.
15%
19°C
$36 Vol.
55%
20°C
$0 Vol.
27%
21°C
$0 Vol.
10%
22°C
$0 Vol.
2%
23°C
$0 Vol.
2%
24°C or higher
$0 Vol.
<1%
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 20 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.Current ensemble forecasts from regional models indicate a highest temperature near 19°C in Amsterdam on September 20, driven by a stable westerly flow of mild maritime air under mostly cloudy skies with limited diurnal heating. Recent model runs show afternoon maxima clustered between 18–20°C, consistent with September climatology where daily highs average around 18.6°C at Schiphol and decline through the month. Light showers or variable cloud cover may further suppress peaks, while no strong anticyclone or warm advection is expected to push readings higher. Updated high-resolution guidance and official observations closer to the date will refine the precise maximum, which determines market resolution. Trader positioning reflects this narrow uncertainty range.
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 20 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 18, 2026, 12:58 AM ET
Volume
$50End Date
Sep 20, 2026Market Opened
Sep 18, 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 20 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.Current ensemble forecasts from regional models indicate a highest temperature near 19°C in Amsterdam on September 20, driven by a stable westerly flow of mild maritime air under mostly cloudy skies with limited diurnal heating. Recent model runs show afternoon maxima clustered between 18–20°C, consistent with September climatology where daily highs average around 18.6°C at Schiphol and decline through the month. Light showers or variable cloud cover may further suppress peaks, while no strong anticyclone or warm advection is expected to push readings higher. Updated high-resolution guidance and official observations closer to the date will refine the precise maximum, which determines market resolution. Trader positioning reflects this narrow uncertainty range.
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 20 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
$50End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Current ensemble forecasts from regional models indicate a highest temperature near 19°C in Amsterdam on September 20, driven by a stable westerly flow of mild maritime air under mostly cloudy skies with limited diurnal heating. Recent model runs show afternoon maxima clustered between 18–20°C, consistent with September climatology where daily highs average around 18.6°C at Schiphol and decline through the month. Light showers or variable cloud cover may further suppress peaks, while no strong anticyclone or warm advection is expected to push readings higher. Updated high-resolution guidance and official observations closer to the date will refine the precise maximum, which determines market resolution. Trader positioning reflects this narrow uncertainty range.
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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