**Trader sentiment for the lowest temperature in Mexico City on September 11, 2026, centers on a near-even split between 13°C and 14°C (roughly 50–51% implied probability each), reflecting tight scientific uncertainty around the official minimum.** At Mexico City’s high elevation of about 2,240 meters, nocturnal radiative cooling under the influence of September’s rainy-season cloud cover and humidity typically produces lows in the 13–15°C range. Forecasts from sources such as Infobae anticipated a minimum near 13.9°C amid 75% rain probability and variable skies, while hourly observations showed temperatures falling to the low-to-mid teens overnight before any post-midnight drop. The 1°C distinction hinges on precise timing of the daily minimum (often near dawn), local microclimate differences across stations, and exact cloud/rain effects on longwave radiation loss. With leading probabilities so close, markets capture the narrow gap between model consensus and final verified station readings from Mexico’s Servicio Meteorológico Nacional.
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 11?
13°C 51%
12°C 7%
9°C 1.9%
11°C 1.0%
$513 Vol.
$513 Vol.
7°C or below
1%
8°C
1%
9°C
2%
10°C
1%
11°C
1%
12°C
7%
13°C
51%
14°C
-
15°C
<1%
16°C
<1%
17°C or higher
<1%
13°C 51%
12°C 7%
9°C 1.9%
11°C 1.0%
$513 Vol.
$513 Vol.
7°C or below
1%
8°C
1%
9°C
2%
10°C
1%
11°C
1%
12°C
7%
13°C
51%
14°C
-
15°C
<1%
16°C
<1%
17°C or higher
<1%
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 9, 2026, 8:29 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 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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...**Trader sentiment for the lowest temperature in Mexico City on September 11, 2026, centers on a near-even split between 13°C and 14°C (roughly 50–51% implied probability each), reflecting tight scientific uncertainty around the official minimum.** At Mexico City’s high elevation of about 2,240 meters, nocturnal radiative cooling under the influence of September’s rainy-season cloud cover and humidity typically produces lows in the 13–15°C range. Forecasts from sources such as Infobae anticipated a minimum near 13.9°C amid 75% rain probability and variable skies, while hourly observations showed temperatures falling to the low-to-mid teens overnight before any post-midnight drop. The 1°C distinction hinges on precise timing of the daily minimum (often near dawn), local microclimate differences across stations, and exact cloud/rain effects on longwave radiation loss. With leading probabilities so close, markets capture the narrow gap between model consensus and final verified station readings from Mexico’s Servicio Meteorológico Nacional.
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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Beware of external links.
Frequently Asked Questions