Recent official forecasts from Environment Canada and model consensus point to an overnight low in the 13–17°C range for Toronto on September 17, keeping market-implied odds tightly clustered around mid-teens outcomes. Northerly flow and partial cloud cover are moderating radiative cooling rates, while a weak surface high limits strong advection of cooler air; these factors create genuine uncertainty in the precise minimum, especially near dawn when urban heat island effects and dew point depression can shift readings by 1–2°C. Historical September climatology shows average lows near 13.5°C, providing context for why traders assign comparable weight to both warmer and cooler bins. Updated model runs and hourly observations from Pearson Airport will likely drive the next shifts in sentiment before resolution.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · AktualisiertNiedrigste Temperatur in Toronto am 17. September?
21°C oder höher 85%
11°C oder weniger 72%
16°C 52%
17°C 49%
11°C oder weniger
72%
12°C
40%
13°C
40%
14°C
40%
15°C
25%
16°C
29%
17°C
27%
18°C
22%
19°C
40%
20°C
40%
21°C oder höher
85%
21°C oder höher 85%
11°C oder weniger 72%
16°C 52%
17°C 49%
11°C oder weniger
72%
12°C
40%
13°C
40%
14°C
40%
15°C
25%
16°C
29%
17°C
27%
18°C
22%
19°C
40%
20°C
40%
21°C oder höher
85%
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.
Markt eröffnet: Sep 15, 2026, 8:29 AM ET
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=cyyzAbwickler
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.
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=cyyzAbwickler
0x69c47De9D...Recent official forecasts from Environment Canada and model consensus point to an overnight low in the 13–17°C range for Toronto on September 17, keeping market-implied odds tightly clustered around mid-teens outcomes. Northerly flow and partial cloud cover are moderating radiative cooling rates, while a weak surface high limits strong advection of cooler air; these factors create genuine uncertainty in the precise minimum, especially near dawn when urban heat island effects and dew point depression can shift readings by 1–2°C. Historical September climatology shows average lows near 13.5°C, providing context for why traders assign comparable weight to both warmer and cooler bins. Updated model runs and hourly observations from Pearson Airport will likely drive the next shifts in sentiment before resolution.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert
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