**Forecast models and official guidance from Mexico’s Servicio Meteorológico Nacional position the daily maximum near 25–27 °C, driving the market’s heavy weighting toward 25 °C and 26 °C.** Mexico City’s high-elevation setting (roughly 2,240 m) and current pattern of variable cloud cover with isolated showers and easterly winds limit strong daytime heating, keeping highs from climbing much above the seasonal average of about 24 °C. Recent model runs show afternoon peaks clustering between 23–26 °C under mostly overcast skies, while a few warmer scenarios allow brief spikes to 27 °C or higher. Lower outcomes remain improbable given the absence of strong cooling mechanisms or atypical cold-air intrusions this time of year. Updated guidance later today will refine these ranges ahead of market 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 Mexico City on September 16?
26°C 48%
25°C 36%
27°C or higher 15%
24°C 4%
$22,274 Vol.
$22,274 Vol.
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
1%
23°C
<1%
24°C
4%
25°C
36%
26°C
48%
27°C or higher
15%
26°C 48%
25°C 36%
27°C or higher 15%
24°C 4%
$22,274 Vol.
$22,274 Vol.
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
1%
23°C
<1%
24°C
4%
25°C
36%
26°C
48%
27°C or higher
15%
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=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 14, 2026, 8:56 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 highest 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 and official guidance from Mexico’s Servicio Meteorológico Nacional position the daily maximum near 25–27 °C, driving the market’s heavy weighting toward 25 °C and 26 °C.** Mexico City’s high-elevation setting (roughly 2,240 m) and current pattern of variable cloud cover with isolated showers and easterly winds limit strong daytime heating, keeping highs from climbing much above the seasonal average of about 24 °C. Recent model runs show afternoon peaks clustering between 23–26 °C under mostly overcast skies, while a few warmer scenarios allow brief spikes to 27 °C or higher. Lower outcomes remain improbable given the absence of strong cooling mechanisms or atypical cold-air intrusions this time of year. Updated guidance later today will refine these ranges ahead of market 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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