**Current forecast models from sources including globalmeteo, Yr.no, and Met Office point to an overnight minimum near 12–13°C on September 18 in Amsterdam, driven by moderate westerly winds, increasing cloud cover after partial clearing, and an Atlantic air mass with dew points around 10–12°C that limits radiative cooling.** Partly cloudy to mostly cloudy skies overnight reduce heat loss compared with clear conditions, while light-to-moderate winds (roughly 7–14 mph) promote mixing that prevents sharper drops. Historical September averages place the typical low near 10.8–11°C, but the current mild pattern and limited precipitation keep values elevated. Traders’ concentration on the 12°C and 13°C outcomes captures this narrow range amid minor model spread on exact cloud timing and boundary-layer moisture, with resolution hinging on the official KNMI or equivalent minimum recorded for the calendar day.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Amsterdam on September 18?
Lowest temperature in Amsterdam on September 18?
15°C 39%
13°C 30%
12°C 23%
11°C 23%
NEW
NEW
Sep 18, 2026
7°C or below
2%
8°C
2%
9°C
2%
10°C
21%
11°C
23%
12°C
23%
13°C
30%
14°C
22%
15°C
39%
16°C
14%
17°C or higher
2%
15°C 39%
13°C 30%
12°C 23%
11°C 23%
NEW
NEW
Sep 18, 2026
7°C or below
$0 Vol.
2%
8°C
$0 Vol.
2%
9°C
$0 Vol.
2%
10°C
$8 Vol.
21%
11°C
$0 Vol.
23%
12°C
$0 Vol.
23%
13°C
$0 Vol.
30%
14°C
$0 Vol.
22%
15°C
$0 Vol.
39%
16°C
$0 Vol.
14%
17°C or higher
$0 Vol.
2%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 forecast models from sources including globalmeteo, Yr.no, and Met Office point to an overnight minimum near 12–13°C on September 18 in Amsterdam, driven by moderate westerly winds, increasing cloud cover after partial clearing, and an Atlantic air mass with dew points around 10–12°C that limits radiative cooling.**
Partly cloudy to mostly cloudy skies overnight reduce heat loss compared with clear conditions, while light-to-moderate winds (roughly 7–14 mph) promote mixing that prevents sharper drops. Historical September averages place the typical low near 10.8–11°C, but the current mild pattern and limited precipitation keep values elevated. Traders’ concentration on the 12°C and 13°C outcomes captures this narrow range amid minor model spread on exact cloud timing and boundary-layer moisture, with resolution hinging on the official KNMI or equivalent minimum recorded for the calendar day.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 lowest 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 16, 2026, 12:31 AM ET
Volume
$8End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 forecast models from sources including globalmeteo, Yr.no, and Met Office point to an overnight minimum near 12–13°C on September 18 in Amsterdam, driven by moderate westerly winds, increasing cloud cover after partial clearing, and an Atlantic air mass with dew points around 10–12°C that limits radiative cooling.**
Partly cloudy to mostly cloudy skies overnight reduce heat loss compared with clear conditions, while light-to-moderate winds (roughly 7–14 mph) promote mixing that prevents sharper drops. Historical September averages place the typical low near 10.8–11°C, but the current mild pattern and limited precipitation keep values elevated. Traders’ concentration on the 12°C and 13°C outcomes captures this narrow range amid minor model spread on exact cloud timing and boundary-layer moisture, with resolution hinging on the official KNMI or equivalent minimum recorded for the calendar day.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest 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 lowest 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
$8End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...**Current forecast models from sources including globalmeteo, Yr.no, and Met Office point to an overnight minimum near 12–13°C on September 18 in Amsterdam, driven by moderate westerly winds, increasing cloud cover after partial clearing, and an Atlantic air mass with dew points around 10–12°C that limits radiative cooling.** Partly cloudy to mostly cloudy skies overnight reduce heat loss compared with clear conditions, while light-to-moderate winds (roughly 7–14 mph) promote mixing that prevents sharper drops. Historical September averages place the typical low near 10.8–11°C, but the current mild pattern and limited precipitation keep values elevated. Traders’ concentration on the 12°C and 13°C outcomes captures this narrow range amid minor model spread on exact cloud timing and boundary-layer moisture, with resolution hinging on the official KNMI or equivalent minimum recorded for the calendar day.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions