Official observations from Argentina’s National Meteorological Service recorded a minimum temperature of 5°C or lower in Buenos Aires on September 9, 2026, driven by a lingering polar air mass and clear nighttime radiative cooling under light winds. This aligns with the sharp cooldown earlier in the month, when minima dipped to 2.4°C on September 6, and placed the day well below the September climatological average low near 10–11°C. Trader consensus at 100% for 5°C or below reflects verified station data rather than forecasts, though minor adjustments could arise from final quality-controlled readings or station-specific variations within the metropolitan area. No further model updates or observational revisions are expected to alter resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Buenos Aires on September 9?
5°C or below 100.0%
6°C <1%
7°C <1%
8°C <1%
$2,482 Vol.
$2,482 Vol.
5°C or below
Yes
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C or higher
No
5°C or below 100.0%
6°C <1%
7°C <1%
8°C <1%
$2,482 Vol.
$2,482 Vol.
5°C or below
Yes
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C or higher
No
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=saez
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 7, 2026, 8:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
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=saez
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=saezResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
Official observations from Argentina’s National Meteorological Service recorded a minimum temperature of 5°C or lower in Buenos Aires on September 9, 2026, driven by a lingering polar air mass and clear nighttime radiative cooling under light winds. This aligns with the sharp cooldown earlier in the month, when minima dipped to 2.4°C on September 6, and placed the day well below the September climatological average low near 10–11°C. Trader consensus at 100% for 5°C or below reflects verified station data rather than forecasts, though minor adjustments could arise from final quality-controlled readings or station-specific variations within the metropolitan area. No further model updates or observational revisions are expected to alter resolution.
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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