Trader consensus on Toronto's highest temperature on March 19 heavily favors 7°C at 32% implied probability, driven by the latest Environment Canada and ECMWF model runs projecting daytime highs in the 6–8°C range amid a mild southerly flow. Recent developments, including a departing low-pressure system, support this cluster, with GFS ensembles showing a mean peak near 7°C but notable spread reflecting spring volatility. Key variables include cloud cover—potentially capping highs at 6°C or below if persistent—and wind direction, where stronger southwesterlies could push 8°C or higher (15.4% odds). Historical March averages hover around 5°C, underscoring the elevated but uncertain warmth implied by current odds. Upcoming 12z model updates could shift sentiment further.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 19?
Highest temperature in Toronto on March 19?
7°C 31%
6°C 22%
8°C or higher 15.4%
4°C 9%
$34,213 Vol.
$34,213 Vol.
-2°C or below
<1%
-1°C
<1%
0°C
1%
1°C
1%
2°C
1%
3°C
2%
4°C
9%
5°C
6%
6°C
22%
7°C
31%
8°C or higher
15%
7°C 31%
6°C 22%
8°C or higher 15.4%
4°C 9%
$34,213 Vol.
$34,213 Vol.
-2°C or below
<1%
-1°C
<1%
0°C
1%
1°C
1%
2°C
1%
3°C
2%
4°C
9%
5°C
6%
6°C
22%
7°C
31%
8°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 15, 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...Trader consensus on Toronto's highest temperature on March 19 heavily favors 7°C at 32% implied probability, driven by the latest Environment Canada and ECMWF model runs projecting daytime highs in the 6–8°C range amid a mild southerly flow. Recent developments, including a departing low-pressure system, support this cluster, with GFS ensembles showing a mean peak near 7°C but notable spread reflecting spring volatility. Key variables include cloud cover—potentially capping highs at 6°C or below if persistent—and wind direction, where stronger southwesterlies could push 8°C or higher (15.4% odds). Historical March averages hover around 5°C, underscoring the elevated but uncertain warmth implied by current odds. Upcoming 12z model updates could shift sentiment further.
Experimental AI-generated summary referencing Polymarket data · Updated
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