Environment and Climate Change Canada's latest forecast for Toronto Pearson International Airport projects a daytime high of 11°C on March 31 under cloudy skies with a 60% chance of showers, driving the market-implied 100% probability for 8°C or higher. This aligns with an ongoing mild spell fueled by southerly winds ahead of a frontal system, following March 30's observed peak exceeding 20°C—well above the late-March climatological average of 7°C. Ensemble model guidance shows tight agreement on temperatures remaining firmly in the double digits, reflecting trader consensus on robust observational trends and minimal upside risk from shear or cold air advection. Official hourly data through evening will confirm the peak, with only an improbable stalled front introducing cooler variability.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 31?
Highest temperature in Toronto on March 31?
8°C or higher 100.0%
-2°C or below <1%
-1°C <1%
0°C <1%
$230,529 Vol.
$230,529 Vol.
-2°C or below
No
-1°C
No
0°C
No
1°C
No
2°C
No
3°C
No
4°C
No
5°C
No
6°C
No
7°C
No
8°C or higher
Yes
8°C or higher 100.0%
-2°C or below <1%
-1°C <1%
0°C <1%
$230,529 Vol.
$230,529 Vol.
-2°C or below
No
-1°C
No
0°C
No
1°C
No
2°C
No
3°C
No
4°C
No
5°C
No
6°C
No
7°C
No
8°C or higher
Yes
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 27, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Environment and Climate Change Canada's latest forecast for Toronto Pearson International Airport projects a daytime high of 11°C on March 31 under cloudy skies with a 60% chance of showers, driving the market-implied 100% probability for 8°C or higher. This aligns with an ongoing mild spell fueled by southerly winds ahead of a frontal system, following March 30's observed peak exceeding 20°C—well above the late-March climatological average of 7°C. Ensemble model guidance shows tight agreement on temperatures remaining firmly in the double digits, reflecting trader consensus on robust observational trends and minimal upside risk from shear or cold air advection. Official hourly data through evening will confirm the peak, with only an improbable stalled front introducing cooler variability.
Experimental AI-generated summary referencing Polymarket data · Updated
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