Recent forecast model consensus from sources like Météo-France and global ensembles points to a high of 21–22°C in Paris on September 9 under northwest winds of 8–15 km/h and partly cloudy skies with minimal precipitation risk. High pressure building from the west is suppressing warmer southerly flow, keeping daytime maxima close to or slightly below the 1991–2020 climatological average of 22.4°C. Low morning dew points near 9–11°C and limited cloud cover support efficient radiational warming limited by the brisk flow. The tight 44.5%–38.5% market split between 21°C and 22°C reflects this narrow uncertainty band, with any last-minute model shift in wind direction or insolation the main variable that could tip 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 9?
21°C 45%
22°C 39%
20°C 9%
23°C 5%
$11,792 Vol.
$11,792 Vol.
16°C or below
<1%
17°C
<1%
18°C
2%
19°C
2%
20°C
9%
21°C
45%
22°C
39%
23°C
5%
24°C
1%
25°C
1%
26°C or higher
<1%
21°C 45%
22°C 39%
20°C 9%
23°C 5%
$11,792 Vol.
$11,792 Vol.
16°C or below
<1%
17°C
<1%
18°C
2%
19°C
2%
20°C
9%
21°C
45%
22°C
39%
23°C
5%
24°C
1%
25°C
1%
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 7, 2026, 12:55 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 forecast model consensus from sources like Météo-France and global ensembles points to a high of 21–22°C in Paris on September 9 under northwest winds of 8–15 km/h and partly cloudy skies with minimal precipitation risk. High pressure building from the west is suppressing warmer southerly flow, keeping daytime maxima close to or slightly below the 1991–2020 climatological average of 22.4°C. Low morning dew points near 9–11°C and limited cloud cover support efficient radiational warming limited by the brisk flow. The tight 44.5%–38.5% market split between 21°C and 22°C reflects this narrow uncertainty band, with any last-minute model shift in wind direction or insolation the main variable that could tip 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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