Current forecasts from multiple models converge on a maximum of 21–23°C for Cape Town on September 11, aligning with the market’s tight clustering around those outcomes and reflecting springtime conditions with southeasterly winds, variable cloud cover, and minimal precipitation risk. Subtle differences among 22°C, 21°C, and 23°C hinge on daytime solar heating under partly sunny skies versus increased low-level cloud or stronger winds that could suppress the peak by 1–2°C at the official station. Ensemble spreads remain modest this close to the event, though late adjustments in boundary-layer moisture or timing of any clearing could shift the verified high. Historical September maxima average near 18°C, so the current setup represents above-normal warmth driven by regional pressure patterns. Updated model runs and official South African Weather Service guidance tomorrow morning will provide the clearest signal for resolution.
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 11?
Highest temperature in Cape Town on September 11?
22°C 33%
21°C 26%
23°C 18%
20°C 9%
NEW
NEW
Sep 11, 2026
17°C or below
2%
18°C
3%
19°C
3%
20°C
9%
21°C
26%
22°C
33%
23°C
18%
24°C
5%
25°C
3%
26°C
2%
27°C or higher
<1%
22°C 33%
21°C 26%
23°C 18%
20°C 9%
NEW
NEW
Sep 11, 2026
17°C or below
$316 Vol.
2%
18°C
$69 Vol.
3%
19°C
$63 Vol.
3%
20°C
$71 Vol.
9%
21°C
$512 Vol.
26%
22°C
$336 Vol.
33%
23°C
$532 Vol.
18%
24°C
$147 Vol.
5%
25°C
$60 Vol.
3%
26°C
$12 Vol.
2%
27°C or higher
$134 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 11 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.Current forecasts from multiple models converge on a maximum of 21–23°C for Cape Town on September 11, aligning with the market’s tight clustering around those outcomes and reflecting springtime conditions with southeasterly winds, variable cloud cover, and minimal precipitation risk. Subtle differences among 22°C, 21°C, and 23°C hinge on daytime solar heating under partly sunny skies versus increased low-level cloud or stronger winds that could suppress the peak by 1–2°C at the official station. Ensemble spreads remain modest this close to the event, though late adjustments in boundary-layer moisture or timing of any clearing could shift the verified high. Historical September maxima average near 18°C, so the current setup represents above-normal warmth driven by regional pressure patterns. Updated model runs and official South African Weather Service guidance tomorrow morning will provide the clearest signal for resolution.
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 11 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 9, 2026, 12:58 AM ET
Volume
$2,252End Date
Sep 11, 2026Market Opened
Sep 9, 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 11 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.Current forecasts from multiple models converge on a maximum of 21–23°C for Cape Town on September 11, aligning with the market’s tight clustering around those outcomes and reflecting springtime conditions with southeasterly winds, variable cloud cover, and minimal precipitation risk. Subtle differences among 22°C, 21°C, and 23°C hinge on daytime solar heating under partly sunny skies versus increased low-level cloud or stronger winds that could suppress the peak by 1–2°C at the official station. Ensemble spreads remain modest this close to the event, though late adjustments in boundary-layer moisture or timing of any clearing could shift the verified high. Historical September maxima average near 18°C, so the current setup represents above-normal warmth driven by regional pressure patterns. Updated model runs and official South African Weather Service guidance tomorrow morning will provide the clearest signal for resolution.
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 11 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
$2,252End Date
Sep 11, 2026Market Opened
Sep 9, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Current forecasts from multiple models converge on a maximum of 21–23°C for Cape Town on September 11, aligning with the market’s tight clustering around those outcomes and reflecting springtime conditions with southeasterly winds, variable cloud cover, and minimal precipitation risk. Subtle differences among 22°C, 21°C, and 23°C hinge on daytime solar heating under partly sunny skies versus increased low-level cloud or stronger winds that could suppress the peak by 1–2°C at the official station. Ensemble spreads remain modest this close to the event, though late adjustments in boundary-layer moisture or timing of any clearing could shift the verified high. Historical September maxima average near 18°C, so the current setup represents above-normal warmth driven by regional pressure patterns. Updated model runs and official South African Weather Service guidance tomorrow morning will provide the clearest signal for 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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