Recent Environment Canada forecasts and ensemble model guidance for June 15 indicate sunny conditions with a projected high near 23°C, yet market-implied odds favor 20–21°C due to lingering uncertainty in maximum readings at official stations like Toronto Pearson. Key differentiating factors include afternoon boundary-layer mixing, lake-breeze moderation from Lake Ontario, and potential thin high-cloud interference that could shave 1–2°C off peak values. Historical June climatology shows typical highs of 22–24°C, but short-term variability in steering patterns and surface heating rates keeps 20°C and 21°C probabilities nearly equal. Updated model runs and the 6 p.m. local observation on June 15 will determine 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 Toronto on June 15?
Highest temperature in Toronto on June 15?
20°C 40%
21°C 37%
19°C 13%
22°C 6%
NEW
$10,764 Vol.
NEW
$10,764 Vol.
Jun 15, 2026
15°C or below
<1%
16°C
<1%
17°C
1%
18°C
3%
19°C
13%
20°C
40%
21°C
37%
22°C
6%
23°C
3%
24°C
<1%
25°C or higher
<1%
20°C 40%
21°C 37%
19°C 13%
22°C 6%
NEW
$10,764 Vol.
NEW
$10,764 Vol.
Jun 15, 2026
15°C or below
$383 Vol.
<1%
16°C
$508 Vol.
<1%
17°C
$1,444 Vol.
1%
18°C
$965 Vol.
3%
19°C
$847 Vol.
13%
20°C
$1,030 Vol.
40%
21°C
$755 Vol.
37%
22°C
$1,474 Vol.
6%
23°C
$1,540 Vol.
3%
24°C
$858 Vol.
<1%
25°C or higher
$1,046 Vol.
<1%
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 15 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.Recent Environment Canada forecasts and ensemble model guidance for June 15 indicate sunny conditions with a projected high near 23°C, yet market-implied odds favor 20–21°C due to lingering uncertainty in maximum readings at official stations like Toronto Pearson. Key differentiating factors include afternoon boundary-layer mixing, lake-breeze moderation from Lake Ontario, and potential thin high-cloud interference that could shave 1–2°C off peak values. Historical June climatology shows typical highs of 22–24°C, but short-term variability in steering patterns and surface heating rates keeps 20°C and 21°C probabilities nearly equal. Updated model runs and the 6 p.m. local observation on June 15 will determine resolution.
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 15 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.
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.
Market Opened: Jun 13, 2026, 9:03 PM ET
Volume
$10,764End Date
Jun 15, 2026Market Opened
Jun 13, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...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 15 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.Recent Environment Canada forecasts and ensemble model guidance for June 15 indicate sunny conditions with a projected high near 23°C, yet market-implied odds favor 20–21°C due to lingering uncertainty in maximum readings at official stations like Toronto Pearson. Key differentiating factors include afternoon boundary-layer mixing, lake-breeze moderation from Lake Ontario, and potential thin high-cloud interference that could shave 1–2°C off peak values. Historical June climatology shows typical highs of 22–24°C, but short-term variability in steering patterns and surface heating rates keeps 20°C and 21°C probabilities nearly equal. Updated model runs and the 6 p.m. local observation on June 15 will determine resolution.
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 15 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.
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.
Volume
$10,764End Date
Jun 15, 2026Market Opened
Jun 13, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Recent Environment Canada forecasts and ensemble model guidance for June 15 indicate sunny conditions with a projected high near 23°C, yet market-implied odds favor 20–21°C due to lingering uncertainty in maximum readings at official stations like Toronto Pearson. Key differentiating factors include afternoon boundary-layer mixing, lake-breeze moderation from Lake Ontario, and potential thin high-cloud interference that could shave 1–2°C off peak values. Historical June climatology shows typical highs of 22–24°C, but short-term variability in steering patterns and surface heating rates keeps 20°C and 21°C probabilities nearly equal. Updated model runs and the 6 p.m. local observation on June 15 will determine resolution.
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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