Forecast models from agencies including the National Meteorological Service of Mexico and international sources like ECMWF project Mexico City’s overnight low on September 5 around 13–14°C, driven by the city’s 2,240-meter elevation promoting radiative cooling under partly cloudy skies and light winds of 2–5 km/h. September climatology shows average lows near 10°C, but current conditions with dew points around 11–12°C and 60–85% humidity limit further drops, keeping extremes below 11°C or above 17°C less probable. Model consensus supports the market’s emphasis on mid-teens outcomes, though minor shifts in cloud cover or frontal influences could alter the minimum before official station readings finalize the result.
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 5?
17°C or higher 89%
7°C or below 59%
11°C 48%
15°C 48%
7°C or below
59%
8°C
9%
9°C
47%
10°C
20%
11°C
48%
12°C
26%
13°C
27%
14°C
27%
15°C
48%
16°C
48%
17°C or higher
89%
17°C or higher 89%
7°C or below 59%
11°C 48%
15°C 48%
7°C or below
59%
8°C
9%
9°C
47%
10°C
20%
11°C
48%
12°C
26%
13°C
27%
14°C
27%
15°C
48%
16°C
48%
17°C or higher
89%
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 3, 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...Forecast models from agencies including the National Meteorological Service of Mexico and international sources like ECMWF project Mexico City’s overnight low on September 5 around 13–14°C, driven by the city’s 2,240-meter elevation promoting radiative cooling under partly cloudy skies and light winds of 2–5 km/h. September climatology shows average lows near 10°C, but current conditions with dew points around 11–12°C and 60–85% humidity limit further drops, keeping extremes below 11°C or above 17°C less probable. Model consensus supports the market’s emphasis on mid-teens outcomes, though minor shifts in cloud cover or frontal influences could alter the minimum before official station readings finalize the result.
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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