Forecast models indicate a transition to cooler southerly flow and increased cloud cover on September 23, limiting overnight radiative cooling and keeping Cape Town’s minimum temperature near 15–16°C—above the month’s 10°C climatological average. Southerly winds advecting maritime air, combined with possible light showers, moderate diurnal ranges compared to the warm 28–29°C conditions on September 22. Model consensus supports this range, yet small differences in timing of frontal passage or cloud thickness create uncertainty between sub-12°C and 17°C+ outcomes. Traders weigh these variables against historical September minima while awaiting updated runs from global ensembles and the South African Weather Service 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 Cape Town on September 23?
Lowest temperature in Cape Town on September 23?
21°C or higher 60%
11°C or below 57%
16°C 26%
15°C 25%
NEW
NEW
Sep 23, 2026
11°C or below
57%
12°C
9%
13°C
19%
14°C
24%
15°C
25%
16°C
26%
17°C
21%
18°C
17%
19°C
8%
20°C
6%
21°C or higher
60%
21°C or higher 60%
11°C or below 57%
16°C 26%
15°C 25%
NEW
NEW
Sep 23, 2026
11°C or below
$100 Vol.
57%
12°C
$35 Vol.
9%
13°C
$0 Vol.
19%
14°C
$0 Vol.
24%
15°C
$0 Vol.
25%
16°C
$0 Vol.
26%
17°C
$0 Vol.
21%
18°C
$50 Vol.
17%
19°C
$50 Vol.
8%
20°C
$25 Vol.
6%
21°C or higher
$100 Vol.
60%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 23 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=fact
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.Forecast models indicate a transition to cooler southerly flow and increased cloud cover on September 23, limiting overnight radiative cooling and keeping Cape Town’s minimum temperature near 15–16°C—above the month’s 10°C climatological average. Southerly winds advecting maritime air, combined with possible light showers, moderate diurnal ranges compared to the warm 28–29°C conditions on September 22. Model consensus supports this range, yet small differences in timing of frontal passage or cloud thickness create uncertainty between sub-12°C and 17°C+ outcomes. Traders weigh these variables against historical September minima while awaiting updated runs from global ensembles and the South African Weather Service before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 23 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=fact
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=fact
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 21, 2026, 12:31 AM ET
Volume
$360End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 23 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=fact
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.Forecast models indicate a transition to cooler southerly flow and increased cloud cover on September 23, limiting overnight radiative cooling and keeping Cape Town’s minimum temperature near 15–16°C—above the month’s 10°C climatological average. Southerly winds advecting maritime air, combined with possible light showers, moderate diurnal ranges compared to the warm 28–29°C conditions on September 22. Model consensus supports this range, yet small differences in timing of frontal passage or cloud thickness create uncertainty between sub-12°C and 17°C+ outcomes. Traders weigh these variables against historical September minima while awaiting updated runs from global ensembles and the South African Weather Service before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 23 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=fact
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=fact
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
$360End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:31 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Forecast models indicate a transition to cooler southerly flow and increased cloud cover on September 23, limiting overnight radiative cooling and keeping Cape Town’s minimum temperature near 15–16°C—above the month’s 10°C climatological average. Southerly winds advecting maritime air, combined with possible light showers, moderate diurnal ranges compared to the warm 28–29°C conditions on September 22. Model consensus supports this range, yet small differences in timing of frontal passage or cloud thickness create uncertainty between sub-12°C and 17°C+ outcomes. Traders weigh these variables against historical September minima while awaiting updated runs from global ensembles and the South African Weather Service 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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