This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 27 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 Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ. 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.
Key risk: Revisions to temperature data post-resolution (though unlikely)
AI updated 6/26/2026, 1:07:44 PM
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 27 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 Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ. 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.
Crowd Consensus
13%
ORYN Consensus
13%
Signal Score
+0.5
Opportunity
0.4
Graph Relationships
ORYN is polling its model network — Claude, GPT, Gemini and more — for this market. The consensus and per-model dissent will appear here.
Regime: — · Confidence: 0%
The probability of Toronto reaching 27°C on June 27, 2026, is currently low at 13.00%. Historical climate data for June in Toronto suggests temperatures rarely exceed 27°C, with typical highs around 24-25°C. This market reflects a conservative outlook on extreme heat for the date.
A bullish outcome could occur if a strong high-pressure system or heat dome settles over Southern Ontario, bringing unseasonably hot air from the southern U.S. or Mexico. Above-average solar radiation or urban heat island effects in Toronto could also push temperatures to 27°C. Climate trends showing increasing summer extremes may marginally support this scenario.
A bearish outcome is more likely given Toronto's historical climate patterns, where June highs typically peak at 24-25°C. Persistent cloud cover, rain, or cooler-than-average air masses from the Great Lakes or Hudson Bay could suppress temperatures below 27°C. Early-season weather variability often favors milder conditions.
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Will the highest temperature in Toronto be 27°C on June 27? is tracked on ORYN with data sourced from polymarket. Current market-implied probability is 12.5% while ORYN AI estimates 13%.
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