Recent forecasts from Environment Canada and GFS models indicate Toronto’s September 9 minimum will likely fall between 19–21 °C amid a warm, humid airmass with 60–80 % thunderstorm chances and southwesterly winds. Trader consensus splits evenly between sub-15 °C and 24 °C-plus outcomes because short-range model guidance diverges on overnight cloud cover and the timing of any cold-front passage; clearer skies would allow stronger radiational cooling toward seasonal norms near 15 °C, while persistent low-level moisture and storms suppress the diurnal drop. Historical September lows average 14–16 °C, underscoring how current warm advection keeps extremes competitive until the next model cycle refines boundary-layer conditions.
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 9?
Lowest temperature in Toronto on September 9?
14°C or below 91%
24°C or higher 87%
23°C 39%
19°C 36%
NEW
NEW
Sep 9, 2026
14°C or below
91%
15°C
22%
16°C
22%
17°C
22%
18°C
24%
19°C
36%
20°C
26%
21°C
24%
22°C
22%
23°C
39%
24°C or higher
87%
14°C or below 91%
24°C or higher 87%
23°C 39%
19°C 36%
NEW
NEW
Sep 9, 2026
14°C or below
$22 Vol.
91%
15°C
$0 Vol.
22%
16°C
$0 Vol.
22%
17°C
$0 Vol.
22%
18°C
$0 Vol.
24%
19°C
$0 Vol.
36%
20°C
$0 Vol.
26%
21°C
$0 Vol.
24%
22°C
$0 Vol.
22%
23°C
$22 Vol.
39%
24°C or higher
$0 Vol.
87%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 9 Sep '26.
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.Recent forecasts from Environment Canada and GFS models indicate Toronto’s September 9 minimum will likely fall between 19–21 °C amid a warm, humid airmass with 60–80 % thunderstorm chances and southwesterly winds. Trader consensus splits evenly between sub-15 °C and 24 °C-plus outcomes because short-range model guidance diverges on overnight cloud cover and the timing of any cold-front passage; clearer skies would allow stronger radiational cooling toward seasonal norms near 15 °C, while persistent low-level moisture and storms suppress the diurnal drop. Historical September lows average 14–16 °C, underscoring how current warm advection keeps extremes competitive until the next model cycle refines boundary-layer conditions.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 9 Sep '26.
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.
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 7, 2026, 8:29 AM ET
Volume
$44End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 9 Sep '26.
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.Recent forecasts from Environment Canada and GFS models indicate Toronto’s September 9 minimum will likely fall between 19–21 °C amid a warm, humid airmass with 60–80 % thunderstorm chances and southwesterly winds. Trader consensus splits evenly between sub-15 °C and 24 °C-plus outcomes because short-range model guidance diverges on overnight cloud cover and the timing of any cold-front passage; clearer skies would allow stronger radiational cooling toward seasonal norms near 15 °C, while persistent low-level moisture and storms suppress the diurnal drop. Historical September lows average 14–16 °C, underscoring how current warm advection keeps extremes competitive until the next model cycle refines boundary-layer conditions.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 9 Sep '26.
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.
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.
Volume
$44End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Recent forecasts from Environment Canada and GFS models indicate Toronto’s September 9 minimum will likely fall between 19–21 °C amid a warm, humid airmass with 60–80 % thunderstorm chances and southwesterly winds. Trader consensus splits evenly between sub-15 °C and 24 °C-plus outcomes because short-range model guidance diverges on overnight cloud cover and the timing of any cold-front passage; clearer skies would allow stronger radiational cooling toward seasonal norms near 15 °C, while persistent low-level moisture and storms suppress the diurnal drop. Historical September lows average 14–16 °C, underscoring how current warm advection keeps extremes competitive until the next model cycle refines boundary-layer conditions.
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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