Clear skies and a stable high-pressure system over northern France have driven radiative cooling overnight, with official forecasts and model consensus from sources like Météo-France pointing to a minimum of 10°C early on September 22. This aligns with climatological norms for the date, where average lows hover near 11°C, and current observations show temperatures falling steadily under light northeasterly winds and low humidity. The market’s near-certain pricing on 10°C reflects real-time trader assessment of these conditions and historical measurement patterns at Paris stations. A shift in observed minimum could occur only if urban heat effects or minor model revisions push readings to 11°C or if unexpected cloud cover limits cooling.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Paris on September 22?
10°C 100.0%
9°C 1.0%
7°C or below <1%
8°C <1%
$5,120 Vol.
$5,120 Vol.
7°C or below
No
8°C
No
9°C
No
10°C
Yes
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C or higher
No
10°C 100.0%
9°C 1.0%
7°C or below <1%
8°C <1%
$5,120 Vol.
$5,120 Vol.
7°C or below
No
8°C
No
9°C
No
10°C
Yes
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C or higher
No
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=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 20, 2026, 12:29 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 lowest 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
Clear skies and a stable high-pressure system over northern France have driven radiative cooling overnight, with official forecasts and model consensus from sources like Météo-France pointing to a minimum of 10°C early on September 22. This aligns with climatological norms for the date, where average lows hover near 11°C, and current observations show temperatures falling steadily under light northeasterly winds and low humidity. The market’s near-certain pricing on 10°C reflects real-time trader assessment of these conditions and historical measurement patterns at Paris stations. A shift in observed minimum could occur only if urban heat effects or minor model revisions push readings to 11°C or if unexpected cloud cover limits cooling.
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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