Recent forecasts from multiple models show Toronto's September 23 high likely falling in the narrow 17–19 °C range, with 18 °C edging the market-implied odds. Persistent easterly to northeasterly winds off Lake Ontario, combined with mostly cloudy skies and building high pressure, are limiting daytime solar heating and advecting cooler maritime air. This setup follows a brief cool spell, keeping afternoon maxima several degrees below late-September climatological averages near 20 °C. Minor differences among outcomes hinge on exact cloud timing and any late-day clearing that could allow an extra degree of warming. Updated model runs and official Environment Canada guidance over the next 48 hours will refine the precise peak before resolution.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateHighest temperature in Toronto on September 23?
18°C 34%
19°C 24%
17°C 18%
16°C 9%
12°C or below
3%
13°C
4%
14°C
7%
15°C
5%
16°C
9%
17°C
18%
18°C
34%
19°C
24%
20°C
9%
21°C
8%
22°C or higher
7%
18°C 34%
19°C 24%
17°C 18%
16°C 9%
12°C or below
3%
13°C
4%
14°C
7%
15°C
5%
16°C
9%
17°C
18%
18°C
34%
19°C
24%
20°C
9%
21°C
8%
22°C or higher
7%
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.
Binuksan ang Market: Sep 21, 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 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 multiple models show Toronto's September 23 high likely falling in the narrow 17–19 °C range, with 18 °C edging the market-implied odds. Persistent easterly to northeasterly winds off Lake Ontario, combined with mostly cloudy skies and building high pressure, are limiting daytime solar heating and advecting cooler maritime air. This setup follows a brief cool spell, keeping afternoon maxima several degrees below late-September climatological averages near 20 °C. Minor differences among outcomes hinge on exact cloud timing and any late-day clearing that could allow an extra degree of warming. Updated model runs and official Environment Canada guidance over the next 48 hours will refine the precise peak before resolution.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update
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