Recent forecast models from sources including GFS and ECMWF consensus indicate Mexico City's overnight low on September 13 will likely settle near 12–13°C, driven by the city's 2,240-meter elevation promoting efficient radiative cooling under partly cloudy skies during the rainy season. Typical September minimums hover around 13°C amid frequent afternoon convection that limits daytime heat buildup and enhances nocturnal humidity. Trader positioning, with 17°C or higher at 44% implied probability alongside notable support for sub-14°C outcomes, reflects ongoing model spread in precipitation timing and cloud cover that could shift the low by a few degrees. Official observations from local stations will resolve the market within hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Mexico City on September 13?
17°C or higher 92%
7°C or below 70%
14°C 40%
15°C 40%
7°C or below
70%
8°C
13%
9°C
13%
10°C
13%
11°C
39%
12°C
39%
13°C
22%
14°C
25%
15°C
29%
16°C
22%
17°C or higher
92%
17°C or higher 92%
7°C or below 70%
14°C 40%
15°C 40%
7°C or below
70%
8°C
13%
9°C
13%
10°C
13%
11°C
39%
12°C
39%
13°C
22%
14°C
25%
15°C
29%
16°C
22%
17°C or higher
92%
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=mmmx
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 11, 2026, 8:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
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=mmmx
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=mmmxResolver
0x69c47De9D...Recent forecast models from sources including GFS and ECMWF consensus indicate Mexico City's overnight low on September 13 will likely settle near 12–13°C, driven by the city's 2,240-meter elevation promoting efficient radiative cooling under partly cloudy skies during the rainy season. Typical September minimums hover around 13°C amid frequent afternoon convection that limits daytime heat buildup and enhances nocturnal humidity. Trader positioning, with 17°C or higher at 44% implied probability alongside notable support for sub-14°C outcomes, reflects ongoing model spread in precipitation timing and cloud cover that could shift the low by a few degrees. Official observations from local stations will resolve the market within hours.
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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