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Highest temperature in Cape Town on June 21?

icon for Highest temperature in Cape Town on June 21?

Highest temperature in Cape Town on June 21?

22°C 100.0%

18°C or below <1%

19°C <1%

20°C <1%

Polymarket

$45,642 Vol.

22°C 100.0%

18°C or below <1%

19°C <1%

20°C <1%

Polymarket

$45,642 Vol.

18°C or below

$3,262 Vol.

No

19°C

$3,401 Vol.

No

20°C

$4,980 Vol.

No

21°C

$5,011 Vol.

No

22°C

$10,854 Vol.

Yes

23°C

$6,654 Vol.

No

24°C

$4,428 Vol.

No

25°C

$4,165 Vol.

No

26°C

$1,714 Vol.

No

27°C

$968 Vol.

No

28°C or higher

$206 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 21 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.Recent forecasts from models and the South African Weather Service indicate a transitional high-pressure ridge building over the Western Cape after mid-June cold fronts and cut-off lows, supporting daytime maxima near 20–22°C for Cape Town on June 21. This setup favors moderate warming under clearer skies and lighter winds compared to the cooler, windier conditions of the prior week, though residual marine air from the Benguela Current and possible afternoon sea breezes could cap peaks. The tight clustering of market-implied probabilities around 22–24°C reflects uncertainty in exact ridge strength, cloud cover timing, and localized orographic effects from Table Mountain, with historical June averages near 18°C providing baseline context but limited guidance for this specific synoptic evolution. Updated model runs and official briefings in the next 48 hours will likely refine these variables ahead of 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 21 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.
Volume
$45,642
End Date
Jun 21, 2026
Market Opened
Jun 19, 2026, 1:04 AM ET
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 21 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.

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 21 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.Recent forecasts from models and the South African Weather Service indicate a transitional high-pressure ridge building over the Western Cape after mid-June cold fronts and cut-off lows, supporting daytime maxima near 20–22°C for Cape Town on June 21. This setup favors moderate warming under clearer skies and lighter winds compared to the cooler, windier conditions of the prior week, though residual marine air from the Benguela Current and possible afternoon sea breezes could cap peaks. The tight clustering of market-implied probabilities around 22–24°C reflects uncertainty in exact ridge strength, cloud cover timing, and localized orographic effects from Table Mountain, with historical June averages near 18°C providing baseline context but limited guidance for this specific synoptic evolution. Updated model runs and official briefings in the next 48 hours will likely refine these variables ahead of 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 21 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.
Volume
$45,642
End Date
Jun 21, 2026
Market Opened
Jun 19, 2026, 1:04 AM ET
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 21 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.

Outcome proposed: No

No dispute

Final outcome: No

Beware of external links.

Frequently Asked Questions

"Highest temperature in Cape Town on June 21?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "22°C" at 100%, followed by "18°C or below" at 0%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 100¢ implies that the market collectively assigns a 100% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Highest temperature in Cape Town on June 21?" has generated $45.6K in total trading volume since the market launched on Jun 19, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Highest temperature in Cape Town on June 21?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Cape Town on June 21?" is "22°C" at 100%, meaning the market assigns a 100% chance to that outcome. The next closest outcome is "18°C or below" at 0%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Cape Town on June 21?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.