Recent model runs from GFS and ECMWF indicate a high near 21°C for Paris on September 17, driven by increasing cloud cover and a southwest flow ahead of an approaching front that limits daytime heating. Afternoon temperatures are expected to peak under mostly cloudy skies with moderate southwesterly winds around 15 km/h, keeping values close to the 1991–2020 climatological average of 21.4°C. Ensemble spreads and minor differences in cloud timing or frontal progression create the tight contest between 21°C and 22°C outcomes, while the low odds on 23°C+ or 20°C and below reflect the narrow range of plausible deviations from current guidance. Updated model runs and Météo-France briefings over the next 48 hours will refine these details ahead of market 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 Paris on September 17?
22°C 35%
21°C 34%
20°C 12%
23°C 12%
16°C or below
<1%
17°C
2%
18°C
3%
19°C
4%
20°C
12%
21°C
34%
22°C
35%
23°C
12%
24°C
5%
25°C
2%
26°C or higher
<1%
22°C 35%
21°C 34%
20°C 12%
23°C 12%
16°C or below
<1%
17°C
2%
18°C
3%
19°C
4%
20°C
12%
21°C
34%
22°C
35%
23°C
12%
24°C
5%
25°C
2%
26°C or higher
<1%
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=lfpb
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 15, 2026, 12:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=lfpbResolver
0x69c47De9D...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=lfpb
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=lfpbResolver
0x69c47De9D...Recent model runs from GFS and ECMWF indicate a high near 21°C for Paris on September 17, driven by increasing cloud cover and a southwest flow ahead of an approaching front that limits daytime heating. Afternoon temperatures are expected to peak under mostly cloudy skies with moderate southwesterly winds around 15 km/h, keeping values close to the 1991–2020 climatological average of 21.4°C. Ensemble spreads and minor differences in cloud timing or frontal progression create the tight contest between 21°C and 22°C outcomes, while the low odds on 23°C+ or 20°C and below reflect the narrow range of plausible deviations from current guidance. Updated model runs and Météo-France briefings over the next 48 hours will refine these details ahead of market 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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