Trader consensus around 21°C as Cape Town’s daily maximum on June 17 reflects official South African Weather Service guidance and recent model runs showing clear skies, moderate southerly flow, and limited marine influence under a stable high-pressure ridge. This places the outcome slightly above the June climatological average of 17°C, driven by reduced cloud cover and downslope warming over the peninsula rather than broader seasonal anomalies. The South African Weather Service and global ensembles converge on a narrow range near this threshold, with minimal spread in afternoon readings. A late surge in onshore winds, unexpected coastal low development, or sensor calibration differences at official stations could shift the recorded high to 20°C or 22°C before 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 June 17?
Highest temperature in Cape Town on June 17?
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$37,943 Vol.
$37,943 Vol.
Jun 17, 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C or higher
No
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$37,943 Vol.
$37,943 Vol.
Jun 17, 2026
14°C or below
$549 Vol.
No
15°C
$526 Vol.
No
16°C
$428 Vol.
No
17°C
$1,836 Vol.
No
18°C
$3,347 Vol.
No
19°C
$6,203 Vol.
No
20°C
$5,431 Vol.
No
21°C
$5,067 Vol.
Yes
22°C
$6,234 Vol.
No
23°C
$4,256 Vol.
No
24°C or higher
$4,067 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 17 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.Trader consensus around 21°C as Cape Town’s daily maximum on June 17 reflects official South African Weather Service guidance and recent model runs showing clear skies, moderate southerly flow, and limited marine influence under a stable high-pressure ridge. This places the outcome slightly above the June climatological average of 17°C, driven by reduced cloud cover and downslope warming over the peninsula rather than broader seasonal anomalies. The South African Weather Service and global ensembles converge on a narrow range near this threshold, with minimal spread in afternoon readings. A late surge in onshore winds, unexpected coastal low development, or sensor calibration differences at official stations could shift the recorded high to 20°C or 22°C before market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 17 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Jun 15, 2026, 1:04 AM ET
Volume
$37,943End Date
Jun 17, 2026Market Opened
Jun 15, 2026, 1:04 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 17 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.Trader consensus around 21°C as Cape Town’s daily maximum on June 17 reflects official South African Weather Service guidance and recent model runs showing clear skies, moderate southerly flow, and limited marine influence under a stable high-pressure ridge. This places the outcome slightly above the June climatological average of 17°C, driven by reduced cloud cover and downslope warming over the peninsula rather than broader seasonal anomalies. The South African Weather Service and global ensembles converge on a narrow range near this threshold, with minimal spread in afternoon readings. A late surge in onshore winds, unexpected coastal low development, or sensor calibration differences at official stations could shift the recorded high to 20°C or 22°C before market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 17 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$37,943End Date
Jun 17, 2026Market Opened
Jun 15, 2026, 1:04 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus around 21°C as Cape Town’s daily maximum on June 17 reflects official South African Weather Service guidance and recent model runs showing clear skies, moderate southerly flow, and limited marine influence under a stable high-pressure ridge. This places the outcome slightly above the June climatological average of 17°C, driven by reduced cloud cover and downslope warming over the peninsula rather than broader seasonal anomalies. The South African Weather Service and global ensembles converge on a narrow range near this threshold, with minimal spread in afternoon readings. A late surge in onshore winds, unexpected coastal low development, or sensor calibration differences at official stations could shift the recorded high to 20°C or 22°C before market resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions