Latest forecasts from multiple models show Cape Town daytime highs on September 21 clustering in the upper 20s to low 30s Celsius under mostly clear skies and light variable winds. This positioning reflects springtime warming combined with reduced marine-layer influence from the Benguela Current, as southeasterly or easterly flow weakens the typical cooling effect. Model spread arises primarily from differences in projected wind speed and direction, which determine how much warm air from the interior reaches the coast versus how strongly the ocean moderates temperatures. Recent runs show limited precipitation risk and stable high pressure, keeping the 28–31°C band favored while leaving room for outliers above 32°C if offshore warming strengthens. Updated model guidance through the weekend will refine these thresholds ahead of market 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 21?
Highest temperature in Cape Town on September 21?
32°C or higher 31%
28°C 29%
26°C 29%
29°C 23%
NEW
NEW
Sep 21, 2026
22°C or below
1%
23°C
4%
24°C
7%
25°C
5%
26°C
29%
27°C
23%
28°C
29%
29°C
23%
30°C
21%
31°C
9%
32°C or higher
31%
32°C or higher 31%
28°C 29%
26°C 29%
29°C 23%
NEW
NEW
Sep 21, 2026
22°C or below
$6 Vol.
1%
23°C
$0 Vol.
4%
24°C
$6 Vol.
7%
25°C
$53 Vol.
5%
26°C
$0 Vol.
29%
27°C
$128 Vol.
23%
28°C
$0 Vol.
29%
29°C
$6 Vol.
23%
30°C
$27 Vol.
21%
31°C
$0 Vol.
9%
32°C or higher
$0 Vol.
31%
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 21 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 forecasts from multiple models show Cape Town daytime highs on September 21 clustering in the upper 20s to low 30s Celsius under mostly clear skies and light variable winds. This positioning reflects springtime warming combined with reduced marine-layer influence from the Benguela Current, as southeasterly or easterly flow weakens the typical cooling effect. Model spread arises primarily from differences in projected wind speed and direction, which determine how much warm air from the interior reaches the coast versus how strongly the ocean moderates temperatures. Recent runs show limited precipitation risk and stable high pressure, keeping the 28–31°C band favored while leaving room for outliers above 32°C if offshore warming strengthens. Updated model guidance through the weekend will refine these thresholds ahead of market 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 21 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 19, 2026, 12:58 AM ET
Volume
$225End Date
Sep 21, 2026Market Opened
Sep 19, 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 21 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 forecasts from multiple models show Cape Town daytime highs on September 21 clustering in the upper 20s to low 30s Celsius under mostly clear skies and light variable winds. This positioning reflects springtime warming combined with reduced marine-layer influence from the Benguela Current, as southeasterly or easterly flow weakens the typical cooling effect. Model spread arises primarily from differences in projected wind speed and direction, which determine how much warm air from the interior reaches the coast versus how strongly the ocean moderates temperatures. Recent runs show limited precipitation risk and stable high pressure, keeping the 28–31°C band favored while leaving room for outliers above 32°C if offshore warming strengthens. Updated model guidance through the weekend will refine these thresholds ahead of market 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 21 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
$225End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Latest forecasts from multiple models show Cape Town daytime highs on September 21 clustering in the upper 20s to low 30s Celsius under mostly clear skies and light variable winds. This positioning reflects springtime warming combined with reduced marine-layer influence from the Benguela Current, as southeasterly or easterly flow weakens the typical cooling effect. Model spread arises primarily from differences in projected wind speed and direction, which determine how much warm air from the interior reaches the coast versus how strongly the ocean moderates temperatures. Recent runs show limited precipitation risk and stable high pressure, keeping the 28–31°C band favored while leaving room for outliers above 32°C if offshore warming strengthens. Updated model guidance through the weekend will refine these thresholds ahead of market 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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