Traders overwhelmingly back a high of 12°C or below in Toronto on March 22 (98.8% implied probability), driven by Environment Canada and NOAA ensemble forecasts projecting daytime highs around 4–8°C amid persistent cool Arctic air masses and northerly winds. Historical March climatology supports this, with average highs near 6°C and only rare deviations above 12°C (top 10th percentile). Verified observations from recent days show overnight lows dipping to -2°C, reinforcing model consensus. A realistic challenge would require an abrupt southerly warm front or foehn-like downslope warming off Lake Ontario, though current upper-air patterns make this improbable without major forecast revisions by evening.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Toronto on March 22?
Highest temperature in Toronto on March 22?
12°C or below 98.8%
13°C <1%
16°C <1%
18°C <1%
$117,145 Vol.
$117,145 Vol.
12°C or below
99%
13°C
1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C or higher
<1%
12°C or below 98.8%
13°C <1%
16°C <1%
18°C <1%
$117,145 Vol.
$117,145 Vol.
12°C or below
99%
13°C
1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°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 18, 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...Traders overwhelmingly back a high of 12°C or below in Toronto on March 22 (98.8% implied probability), driven by Environment Canada and NOAA ensemble forecasts projecting daytime highs around 4–8°C amid persistent cool Arctic air masses and northerly winds. Historical March climatology supports this, with average highs near 6°C and only rare deviations above 12°C (top 10th percentile). Verified observations from recent days show overnight lows dipping to -2°C, reinforcing model consensus. A realistic challenge would require an abrupt southerly warm front or foehn-like downslope warming off Lake Ontario, though current upper-air patterns make this improbable without major forecast revisions by evening.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions