Official Environment and Climate Change Canada observations at Toronto Pearson International Airport confirm the highest temperature on May 13 reached 16°C, anchoring trader consensus at 100% implied probability for this outcome. Hourly data show a morning rise from overnight lows near 8°C to a midday peak of 16°C under mostly cloudy skies, west winds gusting to 47 km/h, and scattered showers, matching midday forecasts from the national weather service. This below-average reading for mid-May—typically 19–20°C—reflects a lingering cool upper-air mass and low-pressure influence. Realistic challenges include rare post-processing data revisions from sensor quality checks, though automated station records are highly reliable; final daily summaries are expected soon with minimal change anticipated.
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 100.0%
17°C <1%
18°C <1%
19°C or higher <1%
$86,594 Vol.
$86,594 Vol.
16°C
100%
17°C
<1%
18°C
<1%
19°C or higher
<1%
16°C 100.0%
17°C <1%
18°C <1%
19°C or higher <1%
$86,594 Vol.
$86,594 Vol.
16°C
100%
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...Official Environment and Climate Change Canada observations at Toronto Pearson International Airport confirm the highest temperature on May 13 reached 16°C, anchoring trader consensus at 100% implied probability for this outcome. Hourly data show a morning rise from overnight lows near 8°C to a midday peak of 16°C under mostly cloudy skies, west winds gusting to 47 km/h, and scattered showers, matching midday forecasts from the national weather service. This below-average reading for mid-May—typically 19–20°C—reflects a lingering cool upper-air mass and low-pressure influence. Realistic challenges include rare post-processing data revisions from sensor quality checks, though automated station records are highly reliable; final daily summaries are expected soon with minimal change anticipated.
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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