Latest Environment Canada forecasts and ensemble model runs from GEM, GFS, and ECMWF place Toronto's highest temperature on March 28 around 2-4°C, reflecting trader consensus in the closely matched leading outcomes. A strengthening upper-level trough has ushered in persistent northerly winds and cloudy conditions overnight, cooling projections from earlier 5°C+ estimates by 1-2°C in the past 24 hours. This setup limits daytime heating despite weak solar insolation typical for late March, when historical averages hover near 6°C. Model spreads highlight uncertainty in exact peak timing and cloud breaks, with the next forecast update due this evening potentially refining odds further ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 28?
Highest temperature in Toronto on March 28?
2°C 27%
3°C 22%
1°C 20%
4°C 14%
-1°C or below
7%
0°C
8%
1°C
20%
2°C
27%
3°C
22%
4°C
14%
5°C
4%
6°C
2%
7°C
3%
8°C
2%
9°C or higher
1%
2°C 27%
3°C 22%
1°C 20%
4°C 14%
-1°C or below
7%
0°C
8%
1°C
20%
2°C
27%
3°C
22%
4°C
14%
5°C
4%
6°C
2%
7°C
3%
8°C
2%
9°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: Mar 24, 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...Latest Environment Canada forecasts and ensemble model runs from GEM, GFS, and ECMWF place Toronto's highest temperature on March 28 around 2-4°C, reflecting trader consensus in the closely matched leading outcomes. A strengthening upper-level trough has ushered in persistent northerly winds and cloudy conditions overnight, cooling projections from earlier 5°C+ estimates by 1-2°C in the past 24 hours. This setup limits daytime heating despite weak solar insolation typical for late March, when historical averages hover near 6°C. Model spreads highlight uncertainty in exact peak timing and cloud breaks, with the next forecast update due this evening potentially refining odds further ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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