Official meteorological observations and forecast verification from Mexico's Servicio Meteorológico Nacional and airport stations confirm a minimum temperature of 13°C in Mexico City on September 16, 2026, aligning with the market's strong 98% consensus on that outcome. High-elevation topography and typical late-summer atmospheric patterns produced overnight radiative cooling to this level without deeper cold-air intrusion, consistent with seasonal baselines around 12–14°C. Multiple model runs and real-time station data showed no deviation below this threshold. A lower reading would require an unforecasted cold surge or localized measurement anomaly at official sites, scenarios with negligible probability given the dense observational network and model agreement.
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 16?
Lowest temperature in Mexico City on September 16?
13°C 100.0%
6°C or below <1%
7°C <1%
8°C <1%
$773 Vol.
$773 Vol.
Sep 16, 2026
6°C or below
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C or higher
No
13°C 100.0%
6°C or below <1%
7°C <1%
8°C <1%
$773 Vol.
$773 Vol.
Sep 16, 2026
6°C or below
$115 Vol.
No
7°C
$46 Vol.
No
8°C
$41 Vol.
No
9°C
$41 Vol.
No
10°C
$31 Vol.
No
11°C
$66 Vol.
No
12°C
$52 Vol.
No
13°C
$29 Vol.
Yes
14°C
$248 Vol.
No
15°C
$73 Vol.
No
16°C or higher
$31 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 16 Sep '26.
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.Official meteorological observations and forecast verification from Mexico's Servicio Meteorológico Nacional and airport stations confirm a minimum temperature of 13°C in Mexico City on September 16, 2026, aligning with the market's strong 98% consensus on that outcome. High-elevation topography and typical late-summer atmospheric patterns produced overnight radiative cooling to this level without deeper cold-air intrusion, consistent with seasonal baselines around 12–14°C. Multiple model runs and real-time station data showed no deviation below this threshold. A lower reading would require an unforecasted cold surge or localized measurement anomaly at official sites, scenarios with negligible probability given the dense observational network and model agreement.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 16 Sep '26.
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.
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 14, 2026, 8:29 AM ET
Volume
$773End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 16 Sep '26.
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.Official meteorological observations and forecast verification from Mexico's Servicio Meteorológico Nacional and airport stations confirm a minimum temperature of 13°C in Mexico City on September 16, 2026, aligning with the market's strong 98% consensus on that outcome. High-elevation topography and typical late-summer atmospheric patterns produced overnight radiative cooling to this level without deeper cold-air intrusion, consistent with seasonal baselines around 12–14°C. Multiple model runs and real-time station data showed no deviation below this threshold. A lower reading would require an unforecasted cold surge or localized measurement anomaly at official sites, scenarios with negligible probability given the dense observational network and model agreement.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 16 Sep '26.
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.
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.
Volume
$773End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations and forecast verification from Mexico's Servicio Meteorológico Nacional and airport stations confirm a minimum temperature of 13°C in Mexico City on September 16, 2026, aligning with the market's strong 98% consensus on that outcome. High-elevation topography and typical late-summer atmospheric patterns produced overnight radiative cooling to this level without deeper cold-air intrusion, consistent with seasonal baselines around 12–14°C. Multiple model runs and real-time station data showed no deviation below this threshold. A lower reading would require an unforecasted cold surge or localized measurement anomaly at official sites, scenarios with negligible probability given the dense observational network and model agreement.
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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