Recent forecast model runs from agencies monitoring the Valley of Mexico show overnight radiative cooling under partly cloudy skies likely producing a minimum of 12–13°C at official stations, consistent with September climatology of 12°C average lows at Mexico City’s 2,240 m elevation. Light northerly winds and dew points near 10–11°C limit further drops, while any thicker cloud cover or urban heat island effects could hold the reading at 13–14°C. Trader odds cluster tightly around these values because resolution hinges on precise station data rather than broader regional trends, with limited upside for extremes given stable high-pressure conditions and no incoming cold fronts. Updated model guidance tonight will clarify any last adjustments before the daily minimum is recorded.
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 17?
Lowest temperature in Mexico City on September 17?
10°C 100%
6°C or below 90%
12°C 51%
11°C 49%
$306 Vol.
$306 Vol.
Sep 17, 2026
6°C or below
90%
7°C
1%
8°C
1%
9°C
1%
10°C
100%
11°C
49%
12°C
51%
13°C
51%
14°C
51%
15°C
<1%
16°C or higher
<1%
10°C 100%
6°C or below 90%
12°C 51%
11°C 49%
$306 Vol.
$306 Vol.
Sep 17, 2026
6°C or below
$0 Vol.
90%
7°C
$41 Vol.
1%
8°C
$31 Vol.
1%
9°C
$41 Vol.
1%
10°C
$0 Vol.
100%
11°C
$1 Vol.
49%
12°C
$1 Vol.
51%
13°C
$17 Vol.
51%
14°C
$31 Vol.
51%
15°C
$106 Vol.
<1%
16°C or higher
$37 Vol.
<1%
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 17 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.Recent forecast model runs from agencies monitoring the Valley of Mexico show overnight radiative cooling under partly cloudy skies likely producing a minimum of 12–13°C at official stations, consistent with September climatology of 12°C average lows at Mexico City’s 2,240 m elevation. Light northerly winds and dew points near 10–11°C limit further drops, while any thicker cloud cover or urban heat island effects could hold the reading at 13–14°C. Trader odds cluster tightly around these values because resolution hinges on precise station data rather than broader regional trends, with limited upside for extremes given stable high-pressure conditions and no incoming cold fronts. Updated model guidance tonight will clarify any last adjustments before the daily minimum is recorded.
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 17 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 15, 2026, 8:29 AM ET
Volume
$306End Date
Sep 17, 2026Market Opened
Sep 15, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...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 17 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.Recent forecast model runs from agencies monitoring the Valley of Mexico show overnight radiative cooling under partly cloudy skies likely producing a minimum of 12–13°C at official stations, consistent with September climatology of 12°C average lows at Mexico City’s 2,240 m elevation. Light northerly winds and dew points near 10–11°C limit further drops, while any thicker cloud cover or urban heat island effects could hold the reading at 13–14°C. Trader odds cluster tightly around these values because resolution hinges on precise station data rather than broader regional trends, with limited upside for extremes given stable high-pressure conditions and no incoming cold fronts. Updated model guidance tonight will clarify any last adjustments before the daily minimum is recorded.
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 17 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
$306End Date
Sep 17, 2026Market Opened
Sep 15, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Recent forecast model runs from agencies monitoring the Valley of Mexico show overnight radiative cooling under partly cloudy skies likely producing a minimum of 12–13°C at official stations, consistent with September climatology of 12°C average lows at Mexico City’s 2,240 m elevation. Light northerly winds and dew points near 10–11°C limit further drops, while any thicker cloud cover or urban heat island effects could hold the reading at 13–14°C. Trader odds cluster tightly around these values because resolution hinges on precise station data rather than broader regional trends, with limited upside for extremes given stable high-pressure conditions and no incoming cold fronts. Updated model guidance tonight will clarify any last adjustments before the daily minimum is recorded.
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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