**Trader consensus heavily favors a 22°C high in Toronto on September 6 due to persistent model agreement and afternoon observations showing limited daytime warming under partly cloudy skies.** Official Environment Canada guidance and GFS-based forecasts indicate a mix of sun and cloud with easterly winds near 10–15 km/h, yielding a peak near 22–24°C and humidex values around 27; real-time readings at Pearson Airport reached only 20°C by mid-afternoon, reinforcing the lower end of the range. Historical September averages hover near 24°C, but current steering patterns and cloud cover have suppressed further rise. A late-day clearing or stronger southerly flow could still push readings to 24°C or higher before sunset, while heavier cloud or earlier cooling would lock in the 22°C outcome.
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 6?
22°C 97%
23°C 3%
25°C <1%
19°C or below <1%
$41,026 Vol.
$41,026 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
97%
23°C
3%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C or higher
<1%
22°C 97%
23°C 3%
25°C <1%
19°C or below <1%
$41,026 Vol.
$41,026 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
97%
23°C
3%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°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 that 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 will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 4, 2026, 8:55 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 that 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 will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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...**Trader consensus heavily favors a 22°C high in Toronto on September 6 due to persistent model agreement and afternoon observations showing limited daytime warming under partly cloudy skies.** Official Environment Canada guidance and GFS-based forecasts indicate a mix of sun and cloud with easterly winds near 10–15 km/h, yielding a peak near 22–24°C and humidex values around 27; real-time readings at Pearson Airport reached only 20°C by mid-afternoon, reinforcing the lower end of the range. Historical September averages hover near 24°C, but current steering patterns and cloud cover have suppressed further rise. A late-day clearing or stronger southerly flow could still push readings to 24°C or higher before sunset, while heavier cloud or earlier cooling would lock in the 22°C outcome.
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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