Forecast models from Environment Canada and others currently point to an overnight low for Toronto on September 8 around 16–19 °C under partly to mostly cloudy skies with light southerly flow, aligning with the early-September climatological average low of 15.2 °C. This keeps the market-implied odds for extremes like 11 °C or below versus 21 °C or higher nearly even, reflecting genuine uncertainty in how quickly a weak trough or increased cloud cover might suppress radiative cooling overnight. Key variables include dew-point trends near 13–14 °C, minimal wind shear, and the timing of any showers on the 9th that could alter the boundary layer. Updated runs from the National Weather Service and Canadian Meteorological Centre, along with surface observations through the evening of the 7th, will likely tighten the range before resolution.
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 8?
Lowest temperature in Toronto on September 8?
11°C or below 79%
21°C or higher 77%
12°C 49%
19°C 49%
NEW
NEW
Sep 8, 2026
11°C or below
79%
12°C
49%
13°C
26%
14°C
26%
15°C
33%
16°C
26%
17°C
27%
18°C
23%
19°C
49%
20°C
6%
21°C or higher
77%
11°C or below 79%
21°C or higher 77%
12°C 49%
19°C 49%
NEW
NEW
Sep 8, 2026
11°C or below
$0 Vol.
79%
12°C
$0 Vol.
49%
13°C
$1 Vol.
26%
14°C
$0 Vol.
26%
15°C
$6 Vol.
33%
16°C
$0 Vol.
26%
17°C
$5 Vol.
27%
18°C
$116 Vol.
23%
19°C
$0 Vol.
49%
20°C
$0 Vol.
6%
21°C or higher
$0 Vol.
77%
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 8 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.Forecast models from Environment Canada and others currently point to an overnight low for Toronto on September 8 around 16–19 °C under partly to mostly cloudy skies with light southerly flow, aligning with the early-September climatological average low of 15.2 °C. This keeps the market-implied odds for extremes like 11 °C or below versus 21 °C or higher nearly even, reflecting genuine uncertainty in how quickly a weak trough or increased cloud cover might suppress radiative cooling overnight. Key variables include dew-point trends near 13–14 °C, minimal wind shear, and the timing of any showers on the 9th that could alter the boundary layer. Updated runs from the National Weather Service and Canadian Meteorological Centre, along with surface observations through the evening of the 7th, will likely tighten the range before resolution.
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 8 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 6, 2026, 8:29 AM ET
Volume
$129End Date
Sep 8, 2026Market Opened
Sep 6, 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 8 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.Forecast models from Environment Canada and others currently point to an overnight low for Toronto on September 8 around 16–19 °C under partly to mostly cloudy skies with light southerly flow, aligning with the early-September climatological average low of 15.2 °C. This keeps the market-implied odds for extremes like 11 °C or below versus 21 °C or higher nearly even, reflecting genuine uncertainty in how quickly a weak trough or increased cloud cover might suppress radiative cooling overnight. Key variables include dew-point trends near 13–14 °C, minimal wind shear, and the timing of any showers on the 9th that could alter the boundary layer. Updated runs from the National Weather Service and Canadian Meteorological Centre, along with surface observations through the evening of the 7th, will likely tighten the range before resolution.
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 8 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
$129End Date
Sep 8, 2026Market Opened
Sep 6, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Forecast models from Environment Canada and others currently point to an overnight low for Toronto on September 8 around 16–19 °C under partly to mostly cloudy skies with light southerly flow, aligning with the early-September climatological average low of 15.2 °C. This keeps the market-implied odds for extremes like 11 °C or below versus 21 °C or higher nearly even, reflecting genuine uncertainty in how quickly a weak trough or increased cloud cover might suppress radiative cooling overnight. Key variables include dew-point trends near 13–14 °C, minimal wind shear, and the timing of any showers on the 9th that could alter the boundary layer. Updated runs from the National Weather Service and Canadian Meteorological Centre, along with surface observations through the evening of the 7th, will likely tighten the range before resolution.
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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