Current forecasts from Environment Canada and multiple models indicate clear skies and light northwesterly winds overnight into September 7, supporting radiative cooling and an expected minimum temperature near 13°C in Toronto. This aligns with the market-implied 47% probability on 10°C or below, as traders weigh the potential for slightly stronger cooling under stable high pressure against the climatological average low of 15.4°C. Recent model runs show minimal disagreement on steering patterns, with no significant warm-air advection or cloud cover expected to moderate overnight lows. Resolution hinges on official Pearson Airport observations, and the next 24-hour forecast updates will likely refine the exact minimum before market close.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Toronto on September 7?
10°C or below 91%
20°C or higher 59%
13°C 49%
11°C 48%
10°C or below
91%
11°C
48%
12°C
48%
13°C
49%
14°C
32%
15°C
27%
16°C
27%
17°C
24%
18°C
15%
19°C
6%
20°C or higher
59%
10°C or below 91%
20°C or higher 59%
13°C 49%
11°C 48%
10°C or below
91%
11°C
48%
12°C
48%
13°C
49%
14°C
32%
15°C
27%
16°C
27%
17°C
24%
18°C
15%
19°C
6%
20°C or higher
59%
The resolution source for this market will be information from NOAA, specifically the lowest 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, 8:29 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 lowest 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...Current forecasts from Environment Canada and multiple models indicate clear skies and light northwesterly winds overnight into September 7, supporting radiative cooling and an expected minimum temperature near 13°C in Toronto. This aligns with the market-implied 47% probability on 10°C or below, as traders weigh the potential for slightly stronger cooling under stable high pressure against the climatological average low of 15.4°C. Recent model runs show minimal disagreement on steering patterns, with no significant warm-air advection or cloud cover expected to moderate overnight lows. Resolution hinges on official Pearson Airport observations, and the next 24-hour forecast updates will likely refine the exact minimum before market close.
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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