Current numerical weather prediction models indicate a mild southwesterly flow and elevated dew points will keep overnight minimum temperatures in Amsterdam near 14–17°C on September 19, driving the market’s heaviest weighting on those outcomes. Persistent cloud cover and light rain expected through the period limit radiational cooling, while the broader airmass remains several degrees above the 1991–2020 climatological low of roughly 10.7°C for the date. Recent ensemble guidance from ECMWF and GFS runs shows little day-to-day shift, reinforcing trader consensus around 16°C as the most probable single value. Official updates from KNMI and the Met Office, along with the next high-resolution model cycles, will provide the key data points likely to refine these implied probabilities before resolution.
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 19?
16°C 52%
14°C 37%
15°C 37%
17°C 30%
11°C or below
2%
12°C
11%
13°C
19%
14°C
37%
15°C
37%
16°C
52%
17°C
30%
18°C
11%
19°C
7%
20°C
2%
21°C or higher
2%
16°C 52%
14°C 37%
15°C 37%
17°C 30%
11°C or below
2%
12°C
11%
13°C
19%
14°C
37%
15°C
37%
16°C
52%
17°C
30%
18°C
11%
19°C
7%
20°C
2%
21°C or higher
2%
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 17, 2026, 12:31 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Current numerical weather prediction models indicate a mild southwesterly flow and elevated dew points will keep overnight minimum temperatures in Amsterdam near 14–17°C on September 19, driving the market’s heaviest weighting on those outcomes. Persistent cloud cover and light rain expected through the period limit radiational cooling, while the broader airmass remains several degrees above the 1991–2020 climatological low of roughly 10.7°C for the date. Recent ensemble guidance from ECMWF and GFS runs shows little day-to-day shift, reinforcing trader consensus around 16°C as the most probable single value. Official updates from KNMI and the Met Office, along with the next high-resolution model cycles, will provide the key data points likely to refine these implied probabilities before 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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