Environment Canada's latest forecast, issued May 13 afternoon, projects a Toronto high of 19°C on May 15 with a mix of sun and cloud, anchoring trader sentiment as 19°C leads at 29.5% implied probability ahead of 18°C (24.5%) and 20°C (18.5%). Following May 14's cool, cloudy conditions with highs near 14-17°C and showers, a high-pressure ridge promises rebound heating, but differentiating factors include timing of afternoon clearing skies, potential Lake Ontario breeze moderating coastal temps, and diurnal boundary layer development. Model ensembles exhibit tight spread around 18-20°C amid spring-like variability; monitor hourly observations from Pearson Airport for resolution cues.
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 May 15?
Highest temperature in Toronto on May 15?
19°C 29%
18°C 21%
20°C 19%
21°C 14%
NEW
NEW
May 15, 2026
12°C or below
<1%
13°C
<1%
14°C
1%
15°C
2%
16°C
7%
17°C
12%
18°C
21%
19°C
29%
20°C
19%
21°C
14%
22°C or higher
6%
19°C 29%
18°C 21%
20°C 19%
21°C 14%
NEW
NEW
May 15, 2026
12°C or below
$1,192 Vol.
<1%
13°C
$888 Vol.
<1%
14°C
$284 Vol.
1%
15°C
$974 Vol.
2%
16°C
$562 Vol.
7%
17°C
$130 Vol.
12%
18°C
$163 Vol.
21%
19°C
$141 Vol.
29%
20°C
$248 Vol.
19%
21°C
$267 Vol.
14%
22°C or higher
$279 Vol.
6%
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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Environment Canada's latest forecast, issued May 13 afternoon, projects a Toronto high of 19°C on May 15 with a mix of sun and cloud, anchoring trader sentiment as 19°C leads at 29.5% implied probability ahead of 18°C (24.5%) and 20°C (18.5%). Following May 14's cool, cloudy conditions with highs near 14-17°C and showers, a high-pressure ridge promises rebound heating, but differentiating factors include timing of afternoon clearing skies, potential Lake Ontario breeze moderating coastal temps, and diurnal boundary layer development. Model ensembles exhibit tight spread around 18-20°C amid spring-like variability; monitor hourly observations from Pearson Airport for resolution cues.
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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 13, 2026, 12:05 AM ET
Volume
$5,082End Date
May 15, 2026Market Opened
May 13, 2026, 12:05 AM 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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Environment Canada's latest forecast, issued May 13 afternoon, projects a Toronto high of 19°C on May 15 with a mix of sun and cloud, anchoring trader sentiment as 19°C leads at 29.5% implied probability ahead of 18°C (24.5%) and 20°C (18.5%). Following May 14's cool, cloudy conditions with highs near 14-17°C and showers, a high-pressure ridge promises rebound heating, but differentiating factors include timing of afternoon clearing skies, potential Lake Ontario breeze moderating coastal temps, and diurnal boundary layer development. Model ensembles exhibit tight spread around 18-20°C amid spring-like variability; monitor hourly observations from Pearson Airport for resolution cues.
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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$5,082End Date
May 15, 2026Market Opened
May 13, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Environment Canada's latest forecast, issued May 13 afternoon, projects a Toronto high of 19°C on May 15 with a mix of sun and cloud, anchoring trader sentiment as 19°C leads at 29.5% implied probability ahead of 18°C (24.5%) and 20°C (18.5%). Following May 14's cool, cloudy conditions with highs near 14-17°C and showers, a high-pressure ridge promises rebound heating, but differentiating factors include timing of afternoon clearing skies, potential Lake Ontario breeze moderating coastal temps, and diurnal boundary layer development. Model ensembles exhibit tight spread around 18-20°C amid spring-like variability; monitor hourly observations from Pearson Airport for resolution cues.
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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