Forecast models for Cape Town on September 22 show overnight lows clustering around 16–18°C, with some guidance indicating potential cooling toward 13–15°C under variable southeast winds and scattered showers, while others sustain milder readings near 18–20°C amid high pressure. This spread, against a September climatological minimum near 12°C, underpins the near-even market odds between sub-13°C and 22°C+ outcomes. Short-term updates from GFS and ECMWF runs, plus local sea-surface influences from the Benguela Current, will likely narrow the range before resolution, as traders weigh model consensus against typical spring variability.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Cape Town on September 22?
22°C or higher 85%
12°C or below 83%
13°C 39%
14°C 39%
12°C or below
83%
13°C
39%
14°C
39%
15°C
39%
16°C
39%
17°C
25%
18°C
24%
19°C
20%
20°C
20%
21°C
39%
22°C or higher
85%
22°C or higher 85%
12°C or below 83%
13°C 39%
14°C 39%
12°C or below
83%
13°C
39%
14°C
39%
15°C
39%
16°C
39%
17°C
25%
18°C
24%
19°C
20%
20°C
20%
21°C
39%
22°C or higher
85%
The resolution source for this market will be information from NOAA, specifically the lowest 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 20, 2026, 12:31 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 lowest 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...Forecast models for Cape Town on September 22 show overnight lows clustering around 16–18°C, with some guidance indicating potential cooling toward 13–15°C under variable southeast winds and scattered showers, while others sustain milder readings near 18–20°C amid high pressure. This spread, against a September climatological minimum near 12°C, underpins the near-even market odds between sub-13°C and 22°C+ outcomes. Short-term updates from GFS and ECMWF runs, plus local sea-surface influences from the Benguela Current, will likely narrow the range before resolution, as traders weigh model consensus against typical spring variability.
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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