Current forecasts from multiple models indicate a daily maximum of 17–18°C for Toronto on September 19, driven by persistent easterly flow, extensive cloud cover, and suppressed solar heating that keeps readings well below the 21°C seasonal average. This consensus supports the market’s heavy weighting toward 18°C and 17°C outcomes, as official guidance shows little potential for the warmer air mass needed to reach 19°C or higher. Limited model spread and stable overnight trends have reinforced trader confidence in this narrow range ahead of final observations.
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 19?
18°C 50%
17°C 38%
19°C 9%
16°C 6%
12°C or below
<1%
13°C
<1%
14°C
2%
15°C
2%
16°C
6%
17°C
38%
18°C
50%
19°C
9%
20°C
4%
21°C
1%
22°C or higher
1%
18°C 50%
17°C 38%
19°C 9%
16°C 6%
12°C or below
<1%
13°C
<1%
14°C
2%
15°C
2%
16°C
6%
17°C
38%
18°C
50%
19°C
9%
20°C
4%
21°C
1%
22°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.
Binuksan ang Market: Sep 17, 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...Current forecasts from multiple models indicate a daily maximum of 17–18°C for Toronto on September 19, driven by persistent easterly flow, extensive cloud cover, and suppressed solar heating that keeps readings well below the 21°C seasonal average. This consensus supports the market’s heavy weighting toward 18°C and 17°C outcomes, as official guidance shows little potential for the warmer air mass needed to reach 19°C or higher. Limited model spread and stable overnight trends have reinforced trader confidence in this narrow range ahead of final observations.
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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