Official forecasts from the South African Weather Service and supporting model consensus point to a daily maximum of 25°C in Cape Town on September 13, 2026, driven by a developing cut-off low that delivers scattered showers and thunderstorms while limiting daytime warming amid moderate south-easterly to north-westerly winds and high humidity. Current observations and hourly trends align with this peak, consistent with springtime variability where coastal influences and cloud cover typically cap highs near seasonal averages rather than extremes. Trader consensus reflects the narrow uncertainty range in these short-term predictions, though final official station readings could shift slightly if localized convective activity or measurement timing deviates from model expectations.
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 13?
25°C 99.7%
29°C or higher <1%
26°C <1%
19°C or below <1%
$37,771 Vol.
$37,771 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
100%
26°C
<1%
27°C
<1%
28°C
<1%
29°C or higher
1%
25°C 99.7%
29°C or higher <1%
26°C <1%
19°C or below <1%
$37,771 Vol.
$37,771 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
100%
26°C
<1%
27°C
<1%
28°C
<1%
29°C or higher
1%
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 11, 2026, 12:58 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Official forecasts from the South African Weather Service and supporting model consensus point to a daily maximum of 25°C in Cape Town on September 13, 2026, driven by a developing cut-off low that delivers scattered showers and thunderstorms while limiting daytime warming amid moderate south-easterly to north-westerly winds and high humidity. Current observations and hourly trends align with this peak, consistent with springtime variability where coastal influences and cloud cover typically cap highs near seasonal averages rather than extremes. Trader consensus reflects the narrow uncertainty range in these short-term predictions, though final official station readings could shift slightly if localized convective activity or measurement timing deviates from model expectations.
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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