Recent ensemble forecasts from global and regional models position 25°C as the modal outcome for Mexico City’s September 13 high, with 26°C a close second, reflecting a narrow spread around slightly above-average late-summer conditions. Clear skies and weak high pressure are expected to limit cloud cover and allow efficient daytime heating at the city’s 2,240-meter elevation, while typical September humidity and urban heat-island effects add modest warming. Model consensus shows low probability of significant frontal passages or convective cooling that could pull maxima below 24°C. The next official update from Mexico’s Servicio Meteorológico Nacional, along with the 00Z ECMWF and GFS runs, will provide the final inputs before 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 13?
Highest temperature in Mexico City on September 13?
25°C 51%
26°C 32%
24°C 14%
27°C or higher 10%
NEW
NEW
Sep 13, 2026
17°C or below
1%
18°C
1%
19°C
1%
20°C
1%
21°C
1%
22°C
2%
23°C
7%
24°C
14%
25°C
51%
26°C
32%
27°C or higher
10%
25°C 51%
26°C 32%
24°C 14%
27°C or higher 10%
NEW
NEW
Sep 13, 2026
17°C or below
$0 Vol.
1%
18°C
$0 Vol.
1%
19°C
$0 Vol.
1%
20°C
$0 Vol.
1%
21°C
$0 Vol.
1%
22°C
$0 Vol.
2%
23°C
$28 Vol.
7%
24°C
$0 Vol.
14%
25°C
$86 Vol.
51%
26°C
$468 Vol.
32%
27°C or higher
$0 Vol.
10%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 13 Sep '26.
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.Recent ensemble forecasts from global and regional models position 25°C as the modal outcome for Mexico City’s September 13 high, with 26°C a close second, reflecting a narrow spread around slightly above-average late-summer conditions. Clear skies and weak high pressure are expected to limit cloud cover and allow efficient daytime heating at the city’s 2,240-meter elevation, while typical September humidity and urban heat-island effects add modest warming. Model consensus shows low probability of significant frontal passages or convective cooling that could pull maxima below 24°C. The next official update from Mexico’s Servicio Meteorológico Nacional, along with the 00Z ECMWF and GFS runs, will provide the final inputs before market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 13 Sep '26.
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.
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 11, 2026, 8:56 AM ET
Volume
$581End Date
Sep 13, 2026Market Opened
Sep 11, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 13 Sep '26.
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.Recent ensemble forecasts from global and regional models position 25°C as the modal outcome for Mexico City’s September 13 high, with 26°C a close second, reflecting a narrow spread around slightly above-average late-summer conditions. Clear skies and weak high pressure are expected to limit cloud cover and allow efficient daytime heating at the city’s 2,240-meter elevation, while typical September humidity and urban heat-island effects add modest warming. Model consensus shows low probability of significant frontal passages or convective cooling that could pull maxima below 24°C. The next official update from Mexico’s Servicio Meteorológico Nacional, along with the 00Z ECMWF and GFS runs, will provide the final inputs before market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 13 Sep '26.
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.
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.
Volume
$581End Date
Sep 13, 2026Market Opened
Sep 11, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Recent ensemble forecasts from global and regional models position 25°C as the modal outcome for Mexico City’s September 13 high, with 26°C a close second, reflecting a narrow spread around slightly above-average late-summer conditions. Clear skies and weak high pressure are expected to limit cloud cover and allow efficient daytime heating at the city’s 2,240-meter elevation, while typical September humidity and urban heat-island effects add modest warming. Model consensus shows low probability of significant frontal passages or convective cooling that could pull maxima below 24°C. The next official update from Mexico’s Servicio Meteorológico Nacional, along with the 00Z ECMWF and GFS runs, will provide the final inputs before 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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