Forecast models from Météo-France and global ensembles converge on a maximum temperature of 25°C in Paris on September 19, 2026, driven by stable high pressure, light southwesterly winds, and partly cloudy skies limiting daytime heating. This aligns with the market-implied odds near 100% for 25°C, reflecting trader assessment of official station data and climatological norms around 21°C for mid-September. Consistent afternoon peaks near 25°C across multiple runs reduce uncertainty, though minor revisions in final observations or localized urban heat effects could theoretically shift resolution if actual readings fall outside expected ranges. No major atmospheric shifts are indicated before sunset.
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 19?
25°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$57,991 Vol.
$57,991 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C or higher
No
25°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$57,991 Vol.
$57,991 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C or higher
No
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 17, 2026, 12:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=lfpbResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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...Outcome proposed: No
No dispute
Final outcome: No
Forecast models from Météo-France and global ensembles converge on a maximum temperature of 25°C in Paris on September 19, 2026, driven by stable high pressure, light southwesterly winds, and partly cloudy skies limiting daytime heating. This aligns with the market-implied odds near 100% for 25°C, reflecting trader assessment of official station data and climatological norms around 21°C for mid-September. Consistent afternoon peaks near 25°C across multiple runs reduce uncertainty, though minor revisions in final observations or localized urban heat effects could theoretically shift resolution if actual readings fall outside expected ranges. No major atmospheric shifts are indicated before sunset.
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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