Latest ensemble forecast models from Environment Canada and global systems like GFS and ECMWF project Toronto's highest temperature on March 26 between 11°C and 13°C, reflecting trader consensus with 12°C leading at 29% implied probability, closely trailed by 11°C (27%) and 13°C (23%). Recent 24-hour updates show model runs converging after a slight warm-up signal from ridging in the upper atmosphere, displacing colder Arctic air, though lingering lake-effect influences from Lake Ontario introduce ±1-2°C uncertainty in boundary layer mixing and cloud cover. Climatologically, late March highs average 7°C but vary widely due to frontal timing; key differentiators include wind speeds above 15 km/h favoring warmer readings versus overcast skies capping at 11°C. Watch for Environment Canada's 00z update tonight for potential refinements ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 26?
Highest temperature in Toronto on March 26?
12°C 29.3%
11°C 27%
13°C 22%
14°C 8.6%
$55,486 Vol.
$55,486 Vol.
8°C or below
1%
9°C
2%
10°C
6%
11°C
27%
12°C
29%
13°C
22%
14°C
9%
15°C
2%
16°C
2%
17°C
<1%
18°C or higher
<1%
12°C 29.3%
11°C 27%
13°C 22%
14°C 8.6%
$55,486 Vol.
$55,486 Vol.
8°C or below
1%
9°C
2%
10°C
6%
11°C
27%
12°C
29%
13°C
22%
14°C
9%
15°C
2%
16°C
2%
17°C
<1%
18°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 22, 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 ensemble forecast models from Environment Canada and global systems like GFS and ECMWF project Toronto's highest temperature on March 26 between 11°C and 13°C, reflecting trader consensus with 12°C leading at 29% implied probability, closely trailed by 11°C (27%) and 13°C (23%). Recent 24-hour updates show model runs converging after a slight warm-up signal from ridging in the upper atmosphere, displacing colder Arctic air, though lingering lake-effect influences from Lake Ontario introduce ±1-2°C uncertainty in boundary layer mixing and cloud cover. Climatologically, late March highs average 7°C but vary widely due to frontal timing; key differentiators include wind speeds above 15 km/h favoring warmer readings versus overcast skies capping at 11°C. Watch for Environment Canada's 00z update tonight for potential refinements ahead of resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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