Trader consensus on Polymarket heavily favors a high of 3°C (36%) or 4°C (25%) in Toronto on March 23, driven by the latest Environment Canada forecast predicting a daytime maximum near 3-4°C amid cloudy skies and light winds, corroborated by ECMWF and GFS ensemble models showing similar mild-but-capped warmth. Recent observations from Pearson Airport logged a March 22 high of just 2°C, reflecting lingering cool air masses from a disrupted jet stream, while seasonal norms for late March average 5°C but with high variability due to Great Lakes moderation. Updated model runs overnight slightly boosted 5°C+ odds to 15% on hints of afternoon clearing, though persistent overcast limits upside potential.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 23?
Highest temperature in Toronto on March 23?
3°C 34%
4°C 23%
2°C 22%
5°C or higher 15%
-5°C or below
<1%
-4°C
1%
-3°C
1%
-2°C
1%
-1°C
1%
0°C
3%
1°C
10%
2°C
22%
3°C
34%
4°C
25%
5°C or higher
15%
3°C 34%
4°C 23%
2°C 22%
5°C or higher 15%
-5°C or below
<1%
-4°C
1%
-3°C
1%
-2°C
1%
-1°C
1%
0°C
3%
1°C
10%
2°C
22%
3°C
34%
4°C
25%
5°C or higher
15%
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 19, 2026, 6:01 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...Trader consensus on Polymarket heavily favors a high of 3°C (36%) or 4°C (25%) in Toronto on March 23, driven by the latest Environment Canada forecast predicting a daytime maximum near 3-4°C amid cloudy skies and light winds, corroborated by ECMWF and GFS ensemble models showing similar mild-but-capped warmth. Recent observations from Pearson Airport logged a March 22 high of just 2°C, reflecting lingering cool air masses from a disrupted jet stream, while seasonal norms for late March average 5°C but with high variability due to Great Lakes moderation. Updated model runs overnight slightly boosted 5°C+ odds to 15% on hints of afternoon clearing, though persistent overcast limits upside potential.
Experimental AI-generated summary referencing Polymarket data · Updated
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