Latest forecast guidance from global models points to a high of 20–22°C in Cape Town on September 23, driven by a shift to southerly winds that advect cooler maritime air and increase cloud cover, limiting daytime heating after warmer conditions on the 22nd. Ensemble spreads reflect modest uncertainty in exact wind strength, shower timing, and solar radiation under partly cloudy skies, keeping 21°C and 22°C nearly tied in trader sentiment while 23°C receives less weight. Historical September averages near 19°C provide context, but short-term model consensus favors the narrow cluster around the current market leaders ahead of final observations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Cape Town on September 23?
Highest temperature in Cape Town on September 23?
22°C 29%
21°C 27%
20°C 15%
23°C 15%
NEW
NEW
Sep 23, 2026
17°C or below
2%
18°C
3%
19°C
5%
20°C
15%
21°C
27%
22°C
29%
23°C
15%
24°C
5%
25°C
4%
26°C
1%
27°C or higher
<1%
22°C 29%
21°C 27%
20°C 15%
23°C 15%
NEW
NEW
Sep 23, 2026
17°C or below
$191 Vol.
2%
18°C
$220 Vol.
3%
19°C
$125 Vol.
5%
20°C
$524 Vol.
15%
21°C
$407 Vol.
27%
22°C
$29 Vol.
29%
23°C
$74 Vol.
15%
24°C
$25 Vol.
5%
25°C
$85 Vol.
4%
26°C
$42 Vol.
1%
27°C or higher
$229 Vol.
<1%
This market will resolve to the temperature range that contains the highest 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 highest 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.Latest forecast guidance from global models points to a high of 20–22°C in Cape Town on September 23, driven by a shift to southerly winds that advect cooler maritime air and increase cloud cover, limiting daytime heating after warmer conditions on the 22nd. Ensemble spreads reflect modest uncertainty in exact wind strength, shower timing, and solar radiation under partly cloudy skies, keeping 21°C and 22°C nearly tied in trader sentiment while 23°C receives less weight. Historical September averages near 19°C provide context, but short-term model consensus favors the narrow cluster around the current market leaders ahead of final observations.
This market will resolve to the temperature range that contains the highest 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 highest 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 highest 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, 12:58 AM ET
Volume
$1,949End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest 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 highest 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.Latest forecast guidance from global models points to a high of 20–22°C in Cape Town on September 23, driven by a shift to southerly winds that advect cooler maritime air and increase cloud cover, limiting daytime heating after warmer conditions on the 22nd. Ensemble spreads reflect modest uncertainty in exact wind strength, shower timing, and solar radiation under partly cloudy skies, keeping 21°C and 22°C nearly tied in trader sentiment while 23°C receives less weight. Historical September averages near 19°C provide context, but short-term model consensus favors the narrow cluster around the current market leaders ahead of final observations.
This market will resolve to the temperature range that contains the highest 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 highest 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 highest 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
$1,949End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Latest forecast guidance from global models points to a high of 20–22°C in Cape Town on September 23, driven by a shift to southerly winds that advect cooler maritime air and increase cloud cover, limiting daytime heating after warmer conditions on the 22nd. Ensemble spreads reflect modest uncertainty in exact wind strength, shower timing, and solar radiation under partly cloudy skies, keeping 21°C and 22°C nearly tied in trader sentiment while 23°C receives less weight. Historical September averages near 19°C provide context, but short-term model consensus favors the narrow cluster around the current market leaders ahead of final observations.
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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