Latest numerical weather prediction runs from major models show clear skies, light northeasterly winds, and high pressure over Paris favoring radiative cooling overnight on September 22–23, with consensus minimum temperatures near 12°C. Trader preference for 10–11°C outcomes reflects model sensitivity to small variations in boundary-layer moisture, wind speed, and timing of any subtle cold-air advection, which can shift the low by 1–2°C. Historical September minima in Paris average around 11–13°C under similar synoptic patterns, and the tight spread between leading probabilities underscores remaining uncertainty ahead of the final observational data used for market 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 23?
10°C 48%
11°C 43%
13°C 15%
9°C 10%
8°C or below
1%
9°C
10%
10°C
48%
11°C
40%
12°C
7%
13°C
15%
14°C
1%
15°C
2%
16°C
1%
17°C
<1%
18°C or higher
<1%
10°C 48%
11°C 43%
13°C 15%
9°C 10%
8°C or below
1%
9°C
10%
10°C
48%
11°C
40%
12°C
7%
13°C
15%
14°C
1%
15°C
2%
16°C
1%
17°C
<1%
18°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 21, 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...Latest numerical weather prediction runs from major models show clear skies, light northeasterly winds, and high pressure over Paris favoring radiative cooling overnight on September 22–23, with consensus minimum temperatures near 12°C. Trader preference for 10–11°C outcomes reflects model sensitivity to small variations in boundary-layer moisture, wind speed, and timing of any subtle cold-air advection, which can shift the low by 1–2°C. Historical September minima in Paris average around 11–13°C under similar synoptic patterns, and the tight spread between leading probabilities underscores remaining uncertainty ahead of the final observational data used for 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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