Strong scientific consensus from National Meteorological Service (SMN) forecasts and multiple models supports the market-implied 100% odds on a daily low of 1°C or below in Buenos Aires on September 16. A persistent cold air mass and southeast winds have driven an early-spring cold outbreak, with projected minima of 5–8°C across the city and suburbs, well below typical September baselines near 10–12°C. Clear skies overnight enhance radiative cooling, while stable high pressure limits warming. Upcoming SMN updates or late-model runs could refine the exact low, though current observations and guidance show little scope for temperatures rising above the 1°C threshold before 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 16?
1°C or below 100.0%
2°C <1%
3°C <1%
4°C <1%
$1,618 Vol.
$1,618 Vol.
1°C or below
100%
2°C
<1%
3°C
<1%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
<1%
8°C
<1%
9°C
<1%
10°C
<1%
11°C or higher
<1%
1°C or below 100.0%
2°C <1%
3°C <1%
4°C <1%
$1,618 Vol.
$1,618 Vol.
1°C or below
100%
2°C
<1%
3°C
<1%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
<1%
8°C
<1%
9°C
<1%
10°C
<1%
11°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=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 14, 2026, 8:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
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=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...Strong scientific consensus from National Meteorological Service (SMN) forecasts and multiple models supports the market-implied 100% odds on a daily low of 1°C or below in Buenos Aires on September 16. A persistent cold air mass and southeast winds have driven an early-spring cold outbreak, with projected minima of 5–8°C across the city and suburbs, well below typical September baselines near 10–12°C. Clear skies overnight enhance radiative cooling, while stable high pressure limits warming. Upcoming SMN updates or late-model runs could refine the exact low, though current observations and guidance show little scope for temperatures rising above the 1°C threshold before 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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