Recent forecasts from models like GFS and Météo-France consensus point to overnight radiative cooling under clear to partly cloudy skies and light northeasterly winds, positioning the daily minimum temperature in Paris near the 1991–2020 climatological average low of 11.0 °C. High-pressure stability with no significant frontal passages or increased cloud cover has kept conditions favorable for temperatures settling between 10–12 °C, aligning with the market’s heaviest implied probabilities on those exact outcomes. Historical records show minima this low occur regularly in late September, while probabilities for 9 °C or below remain low absent unexpected cold advection. Updated model runs and official observations through the morning will refine these market-implied odds ahead of final 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 Paris on September 21?
9°C or below 2%
12°C <1%
13°C <1%
14°C <1%
9°C or below
2%
10°C
40%
11°C
59%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C or higher
<1%
9°C or below 2%
12°C <1%
13°C <1%
14°C <1%
9°C or below
2%
10°C
40%
11°C
59%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C or higher
<1%
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 19, 2026, 12:29 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 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...Recent forecasts from models like GFS and Météo-France consensus point to overnight radiative cooling under clear to partly cloudy skies and light northeasterly winds, positioning the daily minimum temperature in Paris near the 1991–2020 climatological average low of 11.0 °C. High-pressure stability with no significant frontal passages or increased cloud cover has kept conditions favorable for temperatures settling between 10–12 °C, aligning with the market’s heaviest implied probabilities on those exact outcomes. Historical records show minima this low occur regularly in late September, while probabilities for 9 °C or below remain low absent unexpected cold advection. Updated model runs and official observations through the morning will refine these market-implied odds ahead of final 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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