Forecast models and South African Weather Service guidance show Cape Town's September 23 maximum likely falling in a narrow 20–23°C band, with trader consensus clustering around 20–22°C because of variable cloud cover and scattered showers tied to a passing trough. Southerly winds and increased humidity are expected to limit daytime heating compared with recent clear, warmer days, while model spreads arise from differing representations of convective timing and marine layer influence. Historical September averages near 18–22°C provide context, but the current synoptic setup introduces enough uncertainty that small shifts in forecast timing or intensity could easily tip the daily peak between the closely matched leading outcomes. Updated SAWS briefings and afternoon model runs will likely refine probabilities before 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 23?
Highest temperature in Cape Town on September 23?
21°C 32%
20°C 28%
22°C 21%
23°C 12%
NEW
NEW
Sep 23, 2026
17°C or below
<1%
18°C
2%
19°C
5%
20°C
28%
21°C
32%
22°C
21%
23°C
12%
24°C
4%
25°C
2%
26°C
1%
27°C or higher
<1%
21°C 32%
20°C 28%
22°C 21%
23°C 12%
NEW
NEW
Sep 23, 2026
17°C or below
$255 Vol.
<1%
18°C
$294 Vol.
2%
19°C
$427 Vol.
5%
20°C
$1,429 Vol.
28%
21°C
$1,306 Vol.
32%
22°C
$704 Vol.
21%
23°C
$647 Vol.
12%
24°C
$373 Vol.
4%
25°C
$193 Vol.
2%
26°C
$195 Vol.
1%
27°C or higher
$1,618 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.Forecast models and South African Weather Service guidance show Cape Town's September 23 maximum likely falling in a narrow 20–23°C band, with trader consensus clustering around 20–22°C because of variable cloud cover and scattered showers tied to a passing trough. Southerly winds and increased humidity are expected to limit daytime heating compared with recent clear, warmer days, while model spreads arise from differing representations of convective timing and marine layer influence. Historical September averages near 18–22°C provide context, but the current synoptic setup introduces enough uncertainty that small shifts in forecast timing or intensity could easily tip the daily peak between the closely matched leading outcomes. Updated SAWS briefings and afternoon model runs will likely refine probabilities before 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 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
$7,410End 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.Forecast models and South African Weather Service guidance show Cape Town's September 23 maximum likely falling in a narrow 20–23°C band, with trader consensus clustering around 20–22°C because of variable cloud cover and scattered showers tied to a passing trough. Southerly winds and increased humidity are expected to limit daytime heating compared with recent clear, warmer days, while model spreads arise from differing representations of convective timing and marine layer influence. Historical September averages near 18–22°C provide context, but the current synoptic setup introduces enough uncertainty that small shifts in forecast timing or intensity could easily tip the daily peak between the closely matched leading outcomes. Updated SAWS briefings and afternoon model runs will likely refine probabilities before 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 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
$7,410End Date
Sep 23, 2026Market Opened
Sep 21, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Forecast models and South African Weather Service guidance show Cape Town's September 23 maximum likely falling in a narrow 20–23°C band, with trader consensus clustering around 20–22°C because of variable cloud cover and scattered showers tied to a passing trough. Southerly winds and increased humidity are expected to limit daytime heating compared with recent clear, warmer days, while model spreads arise from differing representations of convective timing and marine layer influence. Historical September averages near 18–22°C provide context, but the current synoptic setup introduces enough uncertainty that small shifts in forecast timing or intensity could easily tip the daily peak between the closely matched leading outcomes. Updated SAWS briefings and afternoon model runs will likely refine 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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