**Forecast models show close consensus around a 3–4°C minimum for Buenos Aires on September 7, driven by clear to partly cloudy skies overnight that promote radiational cooling under light northerly flow.** Current surface observations indicate dew points near 1–3°C and high pressure supporting dry, stable conditions, while slight model differences in cloud cover and wind speed create the tight spread between 1°C-or-below and 4°C outcomes. Historical September minima average near 8–10°C, so this cooler pattern reflects a transient cold-air intrusion. Traders weigh the latest GFS and ECMWF runs, with updates on evening observations and any last-minute cloud development likely to shift implied probabilities 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 7?
8°C 49%
4°C 38%
3°C 30%
1°C or below 18%
1°C or below
19%
2°C
14%
3°C
30%
4°C
38%
5°C
5%
6°C
5%
7°C
16%
8°C
49%
9°C
2%
10°C
2%
11°C or higher
2%
8°C 49%
4°C 38%
3°C 30%
1°C or below 18%
1°C or below
19%
2°C
14%
3°C
30%
4°C
38%
5°C
5%
6°C
5%
7°C
16%
8°C
49%
9°C
2%
10°C
2%
11°C or higher
2%
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 5, 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...**Forecast models show close consensus around a 3–4°C minimum for Buenos Aires on September 7, driven by clear to partly cloudy skies overnight that promote radiational cooling under light northerly flow.** Current surface observations indicate dew points near 1–3°C and high pressure supporting dry, stable conditions, while slight model differences in cloud cover and wind speed create the tight spread between 1°C-or-below and 4°C outcomes. Historical September minima average near 8–10°C, so this cooler pattern reflects a transient cold-air intrusion. Traders weigh the latest GFS and ECMWF runs, with updates on evening observations and any last-minute cloud development likely to shift implied probabilities 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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Frequently Asked Questions