**Cloud cover and precipitation from thunderstorms on September 9 kept overnight radiative cooling limited, positioning the minimum temperature near 20–21 °C.** Forecasts from Environment Canada and other models showed daytime highs around 23–26 °C with showers and thunderstorms possible, followed by an expected overnight low near 16–18 °C under partly cloudy skies and west-to-northwest winds. Persistent cloud cover and any residual moisture from the storms reduced heat loss, elevating the actual minimum above climatological averages (roughly 15 °C for early September). Official station data, such as from Toronto Pearson, typically determine market resolution, and trader consensus has shifted heavily toward the warmer outcomes as real-time observations confirmed the muted temperature drop. Upcoming or recently released hourly observations will refine exact resolution within the narrow 20–21 °C band.
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?
19°C 10%
17°C 5.0%
16°C 2.9%
20°C 2%
$863 Vol.
$863 Vol.
Sep 9, 2026
14°C or below
1%
15°C
1%
16°C
3%
17°C
5%
18°C
<1%
19°C
10%
20°C
2%
21°C
69%
22°C
<1%
23°C
<1%
24°C or higher
<1%
19°C 10%
17°C 5.0%
16°C 2.9%
20°C 2%
$863 Vol.
$863 Vol.
Sep 9, 2026
14°C or below
$76 Vol.
1%
15°C
$52 Vol.
1%
16°C
$53 Vol.
3%
17°C
$74 Vol.
5%
18°C
$170 Vol.
<1%
19°C
$25 Vol.
10%
20°C
$30 Vol.
2%
21°C
$48 Vol.
69%
22°C
$145 Vol.
<1%
23°C
$138 Vol.
<1%
24°C or higher
$80 Vol.
<1%
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.**Cloud cover and precipitation from thunderstorms on September 9 kept overnight radiative cooling limited, positioning the minimum temperature near 20–21 °C.**
Forecasts from Environment Canada and other models showed daytime highs around 23–26 °C with showers and thunderstorms possible, followed by an expected overnight low near 16–18 °C under partly cloudy skies and west-to-northwest winds. Persistent cloud cover and any residual moisture from the storms reduced heat loss, elevating the actual minimum above climatological averages (roughly 15 °C for early September). Official station data, such as from Toronto Pearson, typically determine market resolution, and trader consensus has shifted heavily toward the warmer outcomes as real-time observations confirmed the muted temperature drop. Upcoming or recently released hourly observations will refine exact resolution within the narrow 20–21 °C band.
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
$863End 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.**Cloud cover and precipitation from thunderstorms on September 9 kept overnight radiative cooling limited, positioning the minimum temperature near 20–21 °C.**
Forecasts from Environment Canada and other models showed daytime highs around 23–26 °C with showers and thunderstorms possible, followed by an expected overnight low near 16–18 °C under partly cloudy skies and west-to-northwest winds. Persistent cloud cover and any residual moisture from the storms reduced heat loss, elevating the actual minimum above climatological averages (roughly 15 °C for early September). Official station data, such as from Toronto Pearson, typically determine market resolution, and trader consensus has shifted heavily toward the warmer outcomes as real-time observations confirmed the muted temperature drop. Upcoming or recently released hourly observations will refine exact resolution within the narrow 20–21 °C band.
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
$863End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 8:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...**Cloud cover and precipitation from thunderstorms on September 9 kept overnight radiative cooling limited, positioning the minimum temperature near 20–21 °C.** Forecasts from Environment Canada and other models showed daytime highs around 23–26 °C with showers and thunderstorms possible, followed by an expected overnight low near 16–18 °C under partly cloudy skies and west-to-northwest winds. Persistent cloud cover and any residual moisture from the storms reduced heat loss, elevating the actual minimum above climatological averages (roughly 15 °C for early September). Official station data, such as from Toronto Pearson, typically determine market resolution, and trader consensus has shifted heavily toward the warmer outcomes as real-time observations confirmed the muted temperature drop. Upcoming or recently released hourly observations will refine exact resolution within the narrow 20–21 °C band.
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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