Recent short-range forecasts from the Servicio Meteorológico Nacional and global models indicate a minimum temperature near 12–13°C for Buenos Aires on September 18, driven by moderating northerly flow after a recent cold outbreak that produced sub-10°C readings earlier in the week. Persistent high pressure and limited cloud cover support gradual warming, though urban heat-island effects and boundary-layer decoupling could produce localized variability of 1–2°C. The near-even market-implied odds between sub-9°C and 18°C+ outcomes reflect model spread in low-level advection and nocturnal cooling rates, with resolution hinging on the final 48-hour guidance updates from SMN and ensemble runs. Historical September minima average near 10°C, placing current consensus slightly above normal.
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 18?
Lowest temperature in Buenos Aires on September 18?
8°C or below 100%
18°C or higher 99%
9°C 89%
11°C 88%
NEW
NEW
Sep 18, 2026
8°C or below
100%
9°C
89%
10°C
40%
11°C
88%
12°C
88%
13°C
38%
14°C
88%
15°C
38%
16°C
38%
17°C
38%
18°C or higher
99%
8°C or below 100%
18°C or higher 99%
9°C 89%
11°C 88%
NEW
NEW
Sep 18, 2026
8°C or below
$0 Vol.
100%
9°C
$0 Vol.
89%
10°C
$0 Vol.
40%
11°C
$0 Vol.
88%
12°C
$0 Vol.
88%
13°C
$0 Vol.
38%
14°C
$0 Vol.
88%
15°C
$0 Vol.
38%
16°C
$0 Vol.
38%
17°C
$0 Vol.
38%
18°C or higher
$0 Vol.
99%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 18 Sep '26.
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.Recent short-range forecasts from the Servicio Meteorológico Nacional and global models indicate a minimum temperature near 12–13°C for Buenos Aires on September 18, driven by moderating northerly flow after a recent cold outbreak that produced sub-10°C readings earlier in the week. Persistent high pressure and limited cloud cover support gradual warming, though urban heat-island effects and boundary-layer decoupling could produce localized variability of 1–2°C. The near-even market-implied odds between sub-9°C and 18°C+ outcomes reflect model spread in low-level advection and nocturnal cooling rates, with resolution hinging on the final 48-hour guidance updates from SMN and ensemble runs. Historical September minima average near 10°C, placing current consensus slightly above normal.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 18 Sep '26.
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.
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 16, 2026, 8:29 AM ET
Volume
$0End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 18 Sep '26.
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.Recent short-range forecasts from the Servicio Meteorológico Nacional and global models indicate a minimum temperature near 12–13°C for Buenos Aires on September 18, driven by moderating northerly flow after a recent cold outbreak that produced sub-10°C readings earlier in the week. Persistent high pressure and limited cloud cover support gradual warming, though urban heat-island effects and boundary-layer decoupling could produce localized variability of 1–2°C. The near-even market-implied odds between sub-9°C and 18°C+ outcomes reflect model spread in low-level advection and nocturnal cooling rates, with resolution hinging on the final 48-hour guidance updates from SMN and ensemble runs. Historical September minima average near 10°C, placing current consensus slightly above normal.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 18 Sep '26.
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.
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.
Volume
$0End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Recent short-range forecasts from the Servicio Meteorológico Nacional and global models indicate a minimum temperature near 12–13°C for Buenos Aires on September 18, driven by moderating northerly flow after a recent cold outbreak that produced sub-10°C readings earlier in the week. Persistent high pressure and limited cloud cover support gradual warming, though urban heat-island effects and boundary-layer decoupling could produce localized variability of 1–2°C. The near-even market-implied odds between sub-9°C and 18°C+ outcomes reflect model spread in low-level advection and nocturnal cooling rates, with resolution hinging on the final 48-hour guidance updates from SMN and ensemble runs. Historical September minima average near 10°C, placing current consensus slightly above normal.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions