Environment Canada's latest forecast models project Toronto's highest temperature on March 29 at around 9–11°C, driving trader consensus toward 10°C or higher at 41% implied probability, with 9°C close behind at 22%. This reflects a mild air mass advected from the southern U.S. amid a ridge in the jet stream pattern, supported by recent GFS and ECMWF runs showing above-normal warmth after March 27's high of 12°C. Historical March averages hover near 6°C, but current anomalies favor upside risk, though cloud cover and frontal timing introduce uncertainty. Traders await afternoon updates from official stations at Pearson Airport, with resolution based on verified hourly maxima.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 29?
Highest temperature in Toronto on March 29?
10°C or higher 48%
9°C 22%
8°C 14%
7°C 12%
0°C or below
<1%
1°C
3%
2°C
5%
3°C
2%
4°C
3%
5°C
5%
6°C
8%
7°C
12%
8°C
14%
9°C
22%
10°C or higher
41%
10°C or higher 48%
9°C 22%
8°C 14%
7°C 12%
0°C or below
<1%
1°C
3%
2°C
5%
3°C
2%
4°C
3%
5°C
5%
6°C
8%
7°C
12%
8°C
14%
9°C
22%
10°C or higher
41%
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: Mar 25, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Environment Canada's latest forecast models project Toronto's highest temperature on March 29 at around 9–11°C, driving trader consensus toward 10°C or higher at 41% implied probability, with 9°C close behind at 22%. This reflects a mild air mass advected from the southern U.S. amid a ridge in the jet stream pattern, supported by recent GFS and ECMWF runs showing above-normal warmth after March 27's high of 12°C. Historical March averages hover near 6°C, but current anomalies favor upside risk, though cloud cover and frontal timing introduce uncertainty. Traders await afternoon updates from official stations at Pearson Airport, with resolution based on verified hourly maxima.
Experimental AI-generated summary referencing Polymarket data · Updated

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