**Strong model consensus and real-time observations have locked in an 18°C high for Cape Town on September 16, 2026.** Multiple forecasts from GFS-based sources and agencies such as the Met Office and local monitoring stations project a daytime maximum near 17–18°C under clear skies, moderate southeasterly winds of 25–40 km/h, and stable high pressure typical of spring conditions in the region. Hourly data show temperatures climbing to this level in the afternoon before cooling overnight, with no significant warm or cool anomalies detected. The near-100% market-implied probability reflects traders’ confidence in official measurements at stations like Cape Town International Airport, where the daily maximum is expected to register precisely at or very close to 18°C. Only an unforeseen late-day surge or station-specific microclimate deviation could alter the outcome at this late stage.
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 16?
Highest temperature in Cape Town on September 16?
18°C 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$28,186 Vol.
$28,186 Vol.
Sep 16, 2026
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
100%
19°C
<1%
20°C
<1%
21°C or higher
<1%
18°C 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$28,186 Vol.
$28,186 Vol.
Sep 16, 2026
11°C or below
$1,508 Vol.
<1%
12°C
$399 Vol.
<1%
13°C
$271 Vol.
<1%
14°C
$271 Vol.
<1%
15°C
$1,565 Vol.
<1%
16°C
$3,394 Vol.
<1%
17°C
$5,065 Vol.
<1%
18°C
$5,509 Vol.
100%
19°C
$3,910 Vol.
<1%
20°C
$3,628 Vol.
<1%
21°C or higher
$2,666 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 16 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.**Strong model consensus and real-time observations have locked in an 18°C high for Cape Town on September 16, 2026.** Multiple forecasts from GFS-based sources and agencies such as the Met Office and local monitoring stations project a daytime maximum near 17–18°C under clear skies, moderate southeasterly winds of 25–40 km/h, and stable high pressure typical of spring conditions in the region. Hourly data show temperatures climbing to this level in the afternoon before cooling overnight, with no significant warm or cool anomalies detected. The near-100% market-implied probability reflects traders’ confidence in official measurements at stations like Cape Town International Airport, where the daily maximum is expected to register precisely at or very close to 18°C. Only an unforeseen late-day surge or station-specific microclimate deviation could alter the outcome at this late stage.
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 16 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 14, 2026, 12:58 AM ET
Volume
$28,186End Date
Sep 16, 2026Market Opened
Sep 14, 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 16 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.**Strong model consensus and real-time observations have locked in an 18°C high for Cape Town on September 16, 2026.** Multiple forecasts from GFS-based sources and agencies such as the Met Office and local monitoring stations project a daytime maximum near 17–18°C under clear skies, moderate southeasterly winds of 25–40 km/h, and stable high pressure typical of spring conditions in the region. Hourly data show temperatures climbing to this level in the afternoon before cooling overnight, with no significant warm or cool anomalies detected. The near-100% market-implied probability reflects traders’ confidence in official measurements at stations like Cape Town International Airport, where the daily maximum is expected to register precisely at or very close to 18°C. Only an unforeseen late-day surge or station-specific microclimate deviation could alter the outcome at this late stage.
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 16 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
$28,186End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...**Strong model consensus and real-time observations have locked in an 18°C high for Cape Town on September 16, 2026.** Multiple forecasts from GFS-based sources and agencies such as the Met Office and local monitoring stations project a daytime maximum near 17–18°C under clear skies, moderate southeasterly winds of 25–40 km/h, and stable high pressure typical of spring conditions in the region. Hourly data show temperatures climbing to this level in the afternoon before cooling overnight, with no significant warm or cool anomalies detected. The near-100% market-implied probability reflects traders’ confidence in official measurements at stations like Cape Town International Airport, where the daily maximum is expected to register precisely at or very close to 18°C. Only an unforeseen late-day surge or station-specific microclimate deviation could alter the outcome at this late stage.
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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