Current forecast models from sources including GEM and regional guidance project Mexico City overnight lows near 13°C on September 24, consistent with late-September climatology of 12–14°C minima at the city’s 2,240 m elevation. Patchy rain and extensive cloud cover overnight moderate radiative cooling while light northerly winds limit mixing, keeping the minimum from dropping sharply or rising above typical values. Trader sentiment remains closely split between the >=17°C and <=7°C outcomes because short-range ensembles still show modest spread in boundary-layer moisture and timing of any clearing, with resolution hinging on the precise 00:00–06:00 local minimum reported by official stations. Updated model runs and Mexican National Meteorological Service briefings expected overnight will likely narrow the distribution around the 12–14°C range.
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 24?
7°C or below 89%
17°C or higher 44%
8°C 39%
9°C 39%
7°C or below
89%
8°C
39%
9°C
39%
10°C
29%
11°C
16%
12°C
16%
13°C
21%
14°C
22%
15°C
22%
16°C
21%
17°C or higher
44%
7°C or below 89%
17°C or higher 44%
8°C 39%
9°C 39%
7°C or below
89%
8°C
39%
9°C
39%
10°C
29%
11°C
16%
12°C
16%
13°C
21%
14°C
22%
15°C
22%
16°C
21%
17°C or higher
44%
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 22, 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...Current forecast models from sources including GEM and regional guidance project Mexico City overnight lows near 13°C on September 24, consistent with late-September climatology of 12–14°C minima at the city’s 2,240 m elevation. Patchy rain and extensive cloud cover overnight moderate radiative cooling while light northerly winds limit mixing, keeping the minimum from dropping sharply or rising above typical values. Trader sentiment remains closely split between the >=17°C and <=7°C outcomes because short-range ensembles still show modest spread in boundary-layer moisture and timing of any clearing, with resolution hinging on the precise 00:00–06:00 local minimum reported by official stations. Updated model runs and Mexican National Meteorological Service briefings expected overnight will likely narrow the distribution around the 12–14°C range.
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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