Recent official Environment Canada forecasts for Toronto on August 28 highlight a clear night with northwest winds favoring radiational cooling, supporting a projected overnight low near 10°C after a sunny daytime high of 24°C. This aligns with model consensus on post-frontal high pressure and dry air masses reducing cloud cover and humidity, enabling efficient heat loss from the surface. Trader sentiment, with 15°C leading at 34% implied probability followed closely by 14°C and 16°C, reflects uncertainty in ensemble guidance on exact minimum timing and urban heat island effects that can moderate lows by 1–3°C versus rural stations. Key upcoming data include updated ECMWF and GFS runs plus real-time observations from Pearson Airport, which could shift probabilities if dew points or wind patterns deviate from current expectations. Historical August lows average around 15–16°C, underscoring the cooler anomaly currently priced.
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 August 28?
Lowest temperature in Toronto on August 28?
10°C or below 48%
20°C or higher 47%
15°C 35%
14°C 28%
NEW
NEW
Aug 28, 2026
10°C or below
48%
11°C
24%
12°C
24%
13°C
25%
14°C
28%
15°C
35%
16°C
28%
17°C
2%
18°C
24%
19°C
8%
20°C or higher
47%
10°C or below 48%
20°C or higher 47%
15°C 35%
14°C 28%
NEW
NEW
Aug 28, 2026
10°C or below
$5 Vol.
48%
11°C
$0 Vol.
24%
12°C
$0 Vol.
24%
13°C
$0 Vol.
25%
14°C
$0 Vol.
28%
15°C
$0 Vol.
35%
16°C
$0 Vol.
28%
17°C
$0 Vol.
2%
18°C
$0 Vol.
24%
19°C
$5 Vol.
8%
20°C or higher
$5 Vol.
47%
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 28 Aug '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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 official Environment Canada forecasts for Toronto on August 28 highlight a clear night with northwest winds favoring radiational cooling, supporting a projected overnight low near 10°C after a sunny daytime high of 24°C. This aligns with model consensus on post-frontal high pressure and dry air masses reducing cloud cover and humidity, enabling efficient heat loss from the surface. Trader sentiment, with 15°C leading at 34% implied probability followed closely by 14°C and 16°C, reflects uncertainty in ensemble guidance on exact minimum timing and urban heat island effects that can moderate lows by 1–3°C versus rural stations. Key upcoming data include updated ECMWF and GFS runs plus real-time observations from Pearson Airport, which could shift probabilities if dew points or wind patterns deviate from current expectations. Historical August lows average around 15–16°C, underscoring the cooler anomaly currently priced.
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 28 Aug '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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 26, 2026, 9:29 PM ET
Volume
$15End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 9:29 PM 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 28 Aug '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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 official Environment Canada forecasts for Toronto on August 28 highlight a clear night with northwest winds favoring radiational cooling, supporting a projected overnight low near 10°C after a sunny daytime high of 24°C. This aligns with model consensus on post-frontal high pressure and dry air masses reducing cloud cover and humidity, enabling efficient heat loss from the surface. Trader sentiment, with 15°C leading at 34% implied probability followed closely by 14°C and 16°C, reflects uncertainty in ensemble guidance on exact minimum timing and urban heat island effects that can moderate lows by 1–3°C versus rural stations. Key upcoming data include updated ECMWF and GFS runs plus real-time observations from Pearson Airport, which could shift probabilities if dew points or wind patterns deviate from current expectations. Historical August lows average around 15–16°C, underscoring the cooler anomaly currently priced.
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 28 Aug '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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$15End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 9:29 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Recent official Environment Canada forecasts for Toronto on August 28 highlight a clear night with northwest winds favoring radiational cooling, supporting a projected overnight low near 10°C after a sunny daytime high of 24°C. This aligns with model consensus on post-frontal high pressure and dry air masses reducing cloud cover and humidity, enabling efficient heat loss from the surface. Trader sentiment, with 15°C leading at 34% implied probability followed closely by 14°C and 16°C, reflects uncertainty in ensemble guidance on exact minimum timing and urban heat island effects that can moderate lows by 1–3°C versus rural stations. Key upcoming data include updated ECMWF and GFS runs plus real-time observations from Pearson Airport, which could shift probabilities if dew points or wind patterns deviate from current expectations. Historical August lows average around 15–16°C, underscoring the cooler anomaly currently priced.
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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