Recent forecasts from multiple models, including those aligned with official monitoring, indicate a daytime high in Mexico City on September 20 near 23–24°C under mostly cloudy skies with light winds and scattered showers. This aligns with seasonal norms for late September, where afternoon maxima typically peak in the low-to-mid 20s Celsius amid the transition from the rainy season. Cloud cover and precipitation may suppress temperatures slightly below recent days' readings near 23°C, while clearer intervals or stronger insolation could allow brief spikes toward 25–26°C. Market-implied odds favor 26°C as the most likely outcome, reflecting trader assessment of forecast spread and resolution based on official station data, with upside risk from any model run showing warmer conditions.
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 20?
Highest temperature in Mexico City on September 20?
26°C 49%
27°C or higher 35%
25°C 13%
24°C 4%
NEW
NEW
Sep 20, 2026
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
13%
26°C
49%
27°C or higher
35%
26°C 49%
27°C or higher 35%
25°C 13%
24°C 4%
NEW
NEW
Sep 20, 2026
17°C or below
$26 Vol.
<1%
18°C
$26 Vol.
<1%
19°C
$26 Vol.
<1%
20°C
$26 Vol.
<1%
21°C
$36 Vol.
<1%
22°C
$290 Vol.
<1%
23°C
$202 Vol.
1%
24°C
$268 Vol.
4%
25°C
$229 Vol.
13%
26°C
$475 Vol.
49%
27°C or higher
$1,146 Vol.
35%
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 20 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 forecasts from multiple models, including those aligned with official monitoring, indicate a daytime high in Mexico City on September 20 near 23–24°C under mostly cloudy skies with light winds and scattered showers. This aligns with seasonal norms for late September, where afternoon maxima typically peak in the low-to-mid 20s Celsius amid the transition from the rainy season. Cloud cover and precipitation may suppress temperatures slightly below recent days' readings near 23°C, while clearer intervals or stronger insolation could allow brief spikes toward 25–26°C. Market-implied odds favor 26°C as the most likely outcome, reflecting trader assessment of forecast spread and resolution based on official station data, with upside risk from any model run showing warmer conditions.
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 20 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 18, 2026, 8:56 AM ET
Volume
$2,751End Date
Sep 20, 2026Market Opened
Sep 18, 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 20 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 forecasts from multiple models, including those aligned with official monitoring, indicate a daytime high in Mexico City on September 20 near 23–24°C under mostly cloudy skies with light winds and scattered showers. This aligns with seasonal norms for late September, where afternoon maxima typically peak in the low-to-mid 20s Celsius amid the transition from the rainy season. Cloud cover and precipitation may suppress temperatures slightly below recent days' readings near 23°C, while clearer intervals or stronger insolation could allow brief spikes toward 25–26°C. Market-implied odds favor 26°C as the most likely outcome, reflecting trader assessment of forecast spread and resolution based on official station data, with upside risk from any model run showing warmer conditions.
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 20 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
$2,751End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Recent forecasts from multiple models, including those aligned with official monitoring, indicate a daytime high in Mexico City on September 20 near 23–24°C under mostly cloudy skies with light winds and scattered showers. This aligns with seasonal norms for late September, where afternoon maxima typically peak in the low-to-mid 20s Celsius amid the transition from the rainy season. Cloud cover and precipitation may suppress temperatures slightly below recent days' readings near 23°C, while clearer intervals or stronger insolation could allow brief spikes toward 25–26°C. Market-implied odds favor 26°C as the most likely outcome, reflecting trader assessment of forecast spread and resolution based on official station data, with upside risk from any model run showing warmer conditions.
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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