**Latest ensemble forecasts from models like GFS and DWD-MOS show the overnight minimum in Paris on September 9, 2026, centering near 12–13 °C under clearing skies and light northwest winds.** After a period of milder, showery conditions on September 7–8, a ridge of high pressure is building, allowing radiational cooling as dew points fall into the 8–10 °C range and winds drop below 5 m/s. This setup favors the lower end of the historical early-September distribution (climatological average low ~12.2 °C), with limited cloud cover reducing the chance of warmer advection. Traders are weighting the 12 °C and 13 °C outcomes most heavily because model consensus remains tight within that band, while downside risk to 11 °C or below stays modest absent a stronger cold pool. Key upcoming inputs include the next 00z–12z model runs and any adjustments from Météo-France guidance on boundary-layer mixing.
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 9?
12°C 38%
13°C 37%
11°C 18%
14°C 9%
8°C or below
1%
9°C
2%
10°C
4%
11°C
18%
12°C
38%
13°C
37%
14°C
9%
15°C
3%
16°C
2%
17°C
2%
18°C or higher
3%
12°C 38%
13°C 37%
11°C 18%
14°C 9%
8°C or below
1%
9°C
2%
10°C
4%
11°C
18%
12°C
38%
13°C
37%
14°C
9%
15°C
3%
16°C
2%
17°C
2%
18°C or higher
3%
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 7, 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 ensemble forecasts from models like GFS and DWD-MOS show the overnight minimum in Paris on September 9, 2026, centering near 12–13 °C under clearing skies and light northwest winds.** After a period of milder, showery conditions on September 7–8, a ridge of high pressure is building, allowing radiational cooling as dew points fall into the 8–10 °C range and winds drop below 5 m/s. This setup favors the lower end of the historical early-September distribution (climatological average low ~12.2 °C), with limited cloud cover reducing the chance of warmer advection. Traders are weighting the 12 °C and 13 °C outcomes most heavily because model consensus remains tight within that band, while downside risk to 11 °C or below stays modest absent a stronger cold pool. Key upcoming inputs include the next 00z–12z model runs and any adjustments from Météo-France guidance on boundary-layer mixing.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions