Forecast models from Environment Canada and other agencies currently project an overnight minimum near 18–20°C for Toronto on September 2, with daytime highs of 27–29°C amid a 40–60% chance of showers and thunderstorms. This range reflects lingering summer humidity, variable cloud cover, and a weak frontal passage that limits strong radiative cooling. Trader consensus clusters tightly around 19–22°C outcomes because small shifts in timing of clearing skies or precipitation intensity can alter the daily low by 2–3°C. Historical September averages place typical overnight lows near 16°C, but recent warm, moist conditions have supported higher minima. Updated model runs and official briefings in the next 24 hours will likely resolve the narrow spread between these adjacent bins.
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 2?
19°C 100%
22°C 100%
25°C or higher 100%
15°C or below 98%
15°C or below
98%
16°C
75%
17°C
77%
18°C
96%
19°C
100%
20°C
48%
21°C
48%
22°C
100%
23°C
98%
24°C
98%
25°C or higher
100%
19°C 100%
22°C 100%
25°C or higher 100%
15°C or below 98%
15°C or below
98%
16°C
75%
17°C
77%
18°C
96%
19°C
100%
20°C
48%
21°C
48%
22°C
100%
23°C
98%
24°C
98%
25°C or higher
100%
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 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, 8:29 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 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...Forecast models from Environment Canada and other agencies currently project an overnight minimum near 18–20°C for Toronto on September 2, with daytime highs of 27–29°C amid a 40–60% chance of showers and thunderstorms. This range reflects lingering summer humidity, variable cloud cover, and a weak frontal passage that limits strong radiative cooling. Trader consensus clusters tightly around 19–22°C outcomes because small shifts in timing of clearing skies or precipitation intensity can alter the daily low by 2–3°C. Historical September averages place typical overnight lows near 16°C, but recent warm, moist conditions have supported higher minima. Updated model runs and official briefings in the next 24 hours will likely resolve the narrow spread between these adjacent bins.
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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