Recent forecast model runs from Environment Canada and other agencies show a southerly flow advecting warmer, humid air into the Toronto region on September 2, supporting daily highs clustered near 28–29°C amid partly cloudy skies and a 30% chance of showers or thunderstorms. These conditions, slightly above the late-summer climatological average of 24°C, reflect modest ridging and limited cloud cover that allows daytime heating while moisture and instability may cap extreme peaks through evaporative cooling or early convection. Ensemble spreads introduce uncertainty between 27°C and 30°C depending on exact timing of any showers, with official updates expected from Environment Canada before resolution. Market-implied odds align closely with this guidance, reflecting trader assessment of the narrow range of probable outcomes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Toronto on September 2?
28°C 31%
29°C 25%
27°C 19%
30°C 10%
25°C or below
3%
26°C
4%
27°C
19%
28°C
31%
29°C
25%
30°C
10%
31°C
4%
32°C
3%
33°C
1%
34°C
<1%
35°C or higher
<1%
28°C 31%
29°C 25%
27°C 19%
30°C 10%
25°C or below
3%
26°C
4%
27°C
19%
28°C
31%
29°C
25%
30°C
10%
31°C
4%
32°C
3%
33°C
1%
34°C
<1%
35°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event which there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 31, 2026, 8:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event which there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Recent forecast model runs from Environment Canada and other agencies show a southerly flow advecting warmer, humid air into the Toronto region on September 2, supporting daily highs clustered near 28–29°C amid partly cloudy skies and a 30% chance of showers or thunderstorms. These conditions, slightly above the late-summer climatological average of 24°C, reflect modest ridging and limited cloud cover that allows daytime heating while moisture and instability may cap extreme peaks through evaporative cooling or early convection. Ensemble spreads introduce uncertainty between 27°C and 30°C depending on exact timing of any showers, with official updates expected from Environment Canada before resolution. Market-implied odds align closely with this guidance, reflecting trader assessment of the narrow range of probable outcomes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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