Latest Environment Canada forecasts project Toronto's highest temperature on March 29 reaching 9–12°C, driving trader consensus toward 10°C or higher at 52% market-implied probability, supported by a high-pressure ridge ushering mild southerly winds and above-normal spring conditions. This aligns with ensemble model runs from the Global Environmental Multiscale (GEM) and GFS systems, which converged yesterday on peak daytime highs near 11°C after earlier cooler outlooks amid lingering cold snaps. Historical late-March averages hover around 6–8°C, but current atmospheric patterns—neutral ENSO influences and retreating polar air—favor warming; however, cloud cover and potential showers introduce uncertainty, with 9°C at 21.5% reflecting downside risks. Watch for this afternoon's 12Z model updates, which could refine land surface and boundary layer details ahead of resolution.
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 52%
9°C 22%
7°C 11%
6°C 6%
0°C or below
<1%
1°C
1%
2°C
3%
3°C
2%
4°C
3%
5°C
4%
6°C
6%
7°C
11%
8°C
11%
9°C
22%
10°C or higher
52%
10°C or higher 52%
9°C 22%
7°C 11%
6°C 6%
0°C or below
<1%
1°C
1%
2°C
3%
3°C
2%
4°C
3%
5°C
4%
6°C
6%
7°C
11%
8°C
11%
9°C
22%
10°C or higher
52%
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...Latest Environment Canada forecasts project Toronto's highest temperature on March 29 reaching 9–12°C, driving trader consensus toward 10°C or higher at 52% market-implied probability, supported by a high-pressure ridge ushering mild southerly winds and above-normal spring conditions. This aligns with ensemble model runs from the Global Environmental Multiscale (GEM) and GFS systems, which converged yesterday on peak daytime highs near 11°C after earlier cooler outlooks amid lingering cold snaps. Historical late-March averages hover around 6–8°C, but current atmospheric patterns—neutral ENSO influences and retreating polar air—favor warming; however, cloud cover and potential showers introduce uncertainty, with 9°C at 21.5% reflecting downside risks. Watch for this afternoon's 12Z model updates, which could refine land surface and boundary layer details ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · Updated

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