Traders price a 47.5% implied probability for Toronto's highest temperature on March 24 reaching 6°C or higher, reflecting consensus from Environment Canada, ECMWF, and GFS models forecasting mild highs of 5-7°C amid a strengthening upper-level ridge over eastern North America that favors southerly airflow over the Great Lakes region. Recent 00Z model runs show a subtle warming trend, up from earlier cooler biases, with minimal risk of cold fronts as Arctic air masses retreat northward. Historical late-March averages hover around 5-6°C, positioning 5°C (22%) and 4°C (17%) as strong contenders, while subzero odds below 2% align with negligible polar vortex influence per NOAA analyses. Key watch: afternoon Environment Canada update for final tweaks.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 24?
Highest temperature in Toronto on March 24?
6°C or higher 50%
5°C 23%
4°C 16%
2°C 5%
-4°C or below
<1%
-3°C
1%
-2°C
1%
-1°C
1%
0°C
2%
1°C
3%
2°C
5%
3°C
5%
4°C
16%
5°C
23%
6°C or higher
40%
6°C or higher 50%
5°C 23%
4°C 16%
2°C 5%
-4°C or below
<1%
-3°C
1%
-2°C
1%
-1°C
1%
0°C
2%
1°C
3%
2°C
5%
3°C
5%
4°C
16%
5°C
23%
6°C or higher
40%
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 20, 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...Traders price a 47.5% implied probability for Toronto's highest temperature on March 24 reaching 6°C or higher, reflecting consensus from Environment Canada, ECMWF, and GFS models forecasting mild highs of 5-7°C amid a strengthening upper-level ridge over eastern North America that favors southerly airflow over the Great Lakes region. Recent 00Z model runs show a subtle warming trend, up from earlier cooler biases, with minimal risk of cold fronts as Arctic air masses retreat northward. Historical late-March averages hover around 5-6°C, positioning 5°C (22%) and 4°C (17%) as strong contenders, while subzero odds below 2% align with negligible polar vortex influence per NOAA analyses. Key watch: afternoon Environment Canada update for final tweaks.
Experimental AI-generated summary referencing Polymarket data · Updated
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