Environment Canada's latest forecasts, issued midday on May 13, 2026, project a daytime high of 16°C in Toronto amid persistent cloud cover, 40-60% chance of showers, and gusty west winds of 20-40 km/h, closely matching the market's 98% implied probability for this outcome based on observations at Toronto Pearson International Airport. Hourly data show an early peak near 15°C before cooling to 12°C by afternoon, consistent with a cool upper trough suppressing temperatures below climatological May norms of 18-19°C. Realistic challenges include unexpected afternoon clearing for solar heating to 17°C+, though model consensus and current wind patterns make this improbable; monitor evening observations for final 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 May 13?
Highest temperature in Toronto on May 13?
16°C 98.2%
17°C 1.2%
18°C <1%
19°C or higher <1%
$78,893 Vol.
$78,893 Vol.
16°C
98%
17°C
1%
18°C
<1%
19°C or higher
<1%
16°C 98.2%
17°C 1.2%
18°C <1%
19°C or higher <1%
$78,893 Vol.
$78,893 Vol.
16°C
98%
17°C
1%
18°C
<1%
19°C or higher
<1%
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 11, 2026, 12:15 AM ET
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...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.
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Environment Canada's latest forecasts, issued midday on May 13, 2026, project a daytime high of 16°C in Toronto amid persistent cloud cover, 40-60% chance of showers, and gusty west winds of 20-40 km/h, closely matching the market's 98% implied probability for this outcome based on observations at Toronto Pearson International Airport. Hourly data show an early peak near 15°C before cooling to 12°C by afternoon, consistent with a cool upper trough suppressing temperatures below climatological May norms of 18-19°C. Realistic challenges include unexpected afternoon clearing for solar heating to 17°C+, though model consensus and current wind patterns make this improbable; monitor evening observations for final 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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