Recent forecasts from Environment Canada and GFS ensembles indicate a high near 23–25°C for Toronto on September 7, aligning with the 1991–2020 climatological average of 23.7°C under sunny to partly cloudy conditions and light southerly flow. This consensus underpins trader positioning near the 25°C bucket while the near-even split between 30°C-or-higher and 20°C-or-below outcomes reflects lingering model spread on afternoon mixing, potential cloud increases, and minor steering-pattern shifts that could add or subtract a few degrees. With resolution only two days away, updated runs from NOAA and the Canadian Meteorological Centre will likely tighten implied probabilities around the observed thermal profile.
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 7?
24°C 48%
25°C 31%
30°C or higher 24%
26°C 23%
20°C or below
16%
21°C
11%
22°C
11%
23°C
19%
24°C
48%
25°C
31%
26°C
23%
27°C
9%
28°C
7%
29°C
18%
30°C or higher
24%
24°C 48%
25°C 31%
30°C or higher 24%
26°C 23%
20°C or below
16%
21°C
11%
22°C
11%
23°C
19%
24°C
48%
25°C
31%
26°C
23%
27°C
9%
28°C
7%
29°C
18%
30°C or higher
24%
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 5, 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...Recent forecasts from Environment Canada and GFS ensembles indicate a high near 23–25°C for Toronto on September 7, aligning with the 1991–2020 climatological average of 23.7°C under sunny to partly cloudy conditions and light southerly flow. This consensus underpins trader positioning near the 25°C bucket while the near-even split between 30°C-or-higher and 20°C-or-below outcomes reflects lingering model spread on afternoon mixing, potential cloud increases, and minor steering-pattern shifts that could add or subtract a few degrees. With resolution only two days away, updated runs from NOAA and the Canadian Meteorological Centre will likely tighten implied probabilities around the observed thermal profile.
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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