Environment Canada's forecast issued May 15 pegs Toronto Pearson International Airport's high temperature at 22°C on May 16, reflecting GFS and ECMWF consensus for mild upper-air ridging over southern Ontario amid southwest winds gusting to 30 km/h. Trader sentiment clusters tightly around 21-22°C due to uncertainty from increasing cloudiness and a 60% chance of late-afternoon showers, which could cap diurnal heating and suppress peaks below official guidance, while drier scenarios favor 23°C. Recent volatility—a cool 16°C high on May 13 versus today's partial 19°C—highlights model sensitivity to boundary-layer moisture. Watch afternoon updates from Environment Canada for refined precipitation timing as resolution nears.
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 16?
Highest temperature in Toronto on May 16?
22°C 29%
21°C 28%
20°C 18%
23°C 17%
$22,671 Vol.
$22,671 Vol.
16°C or below
<1%
17°C
<1%
18°C
1%
19°C
8%
20°C
18%
21°C
28%
22°C
29%
23°C
17%
24°C
5%
25°C
1%
26°C or higher
<1%
22°C 29%
21°C 28%
20°C 18%
23°C 17%
$22,671 Vol.
$22,671 Vol.
16°C or below
<1%
17°C
<1%
18°C
1%
19°C
8%
20°C
18%
21°C
28%
22°C
29%
23°C
17%
24°C
5%
25°C
1%
26°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 14, 2026, 12:05 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 forecast issued May 15 pegs Toronto Pearson International Airport's high temperature at 22°C on May 16, reflecting GFS and ECMWF consensus for mild upper-air ridging over southern Ontario amid southwest winds gusting to 30 km/h. Trader sentiment clusters tightly around 21-22°C due to uncertainty from increasing cloudiness and a 60% chance of late-afternoon showers, which could cap diurnal heating and suppress peaks below official guidance, while drier scenarios favor 23°C. Recent volatility—a cool 16°C high on May 13 versus today's partial 19°C—highlights model sensitivity to boundary-layer moisture. Watch afternoon updates from Environment Canada for refined precipitation timing as resolution nears.
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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