Recent forecasts from GFS and other models indicate a high of 20–22°C in Paris on September 9 under partly cloudy skies and northwest winds of 8–10 mph, with building high pressure limiting cloud cover and moisture. This synoptic setup—cooler maritime air advection replacing recent warmer southwesterly flow—anchors trader consensus near the historical average high of 22.4°C while allowing tight spreads between 21°C and 22°C. Minor model differences in afternoon peak timing, boundary-layer mixing, or residual cloudiness explain the near-even split, with 20°C remaining a plausible downside if winds strengthen or insolation falls short. Final NWP updates and morning observations will likely resolve the narrow range before 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 42%
20°C 9%
23°C 5%
$12,267 Vol.
$12,267 Vol.
16°C or below
<1%
17°C
<1%
18°C
2%
19°C
2%
20°C
9%
21°C
45%
22°C
42%
23°C
5%
24°C
1%
25°C
1%
26°C or higher
<1%
21°C 45%
22°C 42%
20°C 9%
23°C 5%
$12,267 Vol.
$12,267 Vol.
16°C or below
<1%
17°C
<1%
18°C
2%
19°C
2%
20°C
9%
21°C
45%
22°C
42%
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 forecasts from GFS and other models indicate a high of 20–22°C in Paris on September 9 under partly cloudy skies and northwest winds of 8–10 mph, with building high pressure limiting cloud cover and moisture. This synoptic setup—cooler maritime air advection replacing recent warmer southwesterly flow—anchors trader consensus near the historical average high of 22.4°C while allowing tight spreads between 21°C and 22°C. Minor model differences in afternoon peak timing, boundary-layer mixing, or residual cloudiness explain the near-even split, with 20°C remaining a plausible downside if winds strengthen or insolation falls short. Final NWP updates and morning observations will likely resolve the narrow range before 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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