Recent forecasts from multiple models, including ECMWF and GFS runs, indicate Mexico City's minimum temperature on September 8 will likely fall between 13–14°C, reflecting the current influence of persistent cloud cover, light rain, and high humidity that limit nocturnal radiative cooling at the city's 2,240-meter elevation. Seasonal norms for early September show typical overnight lows near 13°C, with light winds and overcast conditions suppressing further drops while preventing significant warming. Trader consensus around these thresholds stems from limited model spread on timing of any partial clearing, though small shifts in precipitation or wind could nudge the observed minimum toward 12°C or 15°C before official reporting. Updated guidance from Mexico's Servicio Meteorológico Nacional remains the key near-term catalyst.
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 8?
11°C 49%
17°C 49%
14°C 36%
13°C 27%
8°C or below
1%
9°C
5%
10°C
8%
11°C
49%
12°C
25%
13°C
27%
14°C
36%
15°C
27%
16°C
25%
17°C
49%
18°C or higher
2%
11°C 49%
17°C 49%
14°C 36%
13°C 27%
8°C or below
1%
9°C
5%
10°C
8%
11°C
49%
12°C
25%
13°C
27%
14°C
36%
15°C
27%
16°C
25%
17°C
49%
18°C or higher
2%
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 6, 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 forecasts from multiple models, including ECMWF and GFS runs, indicate Mexico City's minimum temperature on September 8 will likely fall between 13–14°C, reflecting the current influence of persistent cloud cover, light rain, and high humidity that limit nocturnal radiative cooling at the city's 2,240-meter elevation. Seasonal norms for early September show typical overnight lows near 13°C, with light winds and overcast conditions suppressing further drops while preventing significant warming. Trader consensus around these thresholds stems from limited model spread on timing of any partial clearing, though small shifts in precipitation or wind could nudge the observed minimum toward 12°C or 15°C before official reporting. Updated guidance from Mexico's Servicio Meteorológico Nacional remains the key near-term catalyst.
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