Recent official forecasts from Environment Canada and supporting models indicate a mostly cloudy June 25 in Toronto with a 60 percent chance of showers or thunderstorms, anchoring trader consensus around a daily high near 20–21°C. These conditions suppress daytime warming relative to climatological normals of 24–25°C for late June, while variable cloud cover and precipitation introduce modest uncertainty in peak readings. Ensemble guidance shows limited spread, keeping 22°C in play but reducing odds for 23°C or higher. With resolution imminent, the next model update and any rapid changes in convective timing will be the key variables influencing final market adjustments before official observations are recorded.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Toronto on June 25?
Highest temperature in Toronto on June 25?
20°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$195,017 Vol.
$195,017 Vol.
Jun 25, 2026
16°C or below
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C or higher
No
20°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$195,017 Vol.
$195,017 Vol.
Jun 25, 2026
16°C or below
$39,341 Vol.
No
17°C
$34,246 Vol.
No
18°C
$19,338 Vol.
No
19°C
$32,057 Vol.
No
20°C
$17,929 Vol.
Yes
21°C
$8,894 Vol.
No
22°C
$5,214 Vol.
No
23°C
$4,116 Vol.
No
24°C
$11,409 Vol.
No
25°C
$7,852 Vol.
No
26°C or higher
$14,620 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 25 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 forecasts from Environment Canada and supporting models indicate a mostly cloudy June 25 in Toronto with a 60 percent chance of showers or thunderstorms, anchoring trader consensus around a daily high near 20–21°C. These conditions suppress daytime warming relative to climatological normals of 24–25°C for late June, while variable cloud cover and precipitation introduce modest uncertainty in peak readings. Ensemble guidance shows limited spread, keeping 22°C in play but reducing odds for 23°C or higher. With resolution imminent, the next model update and any rapid changes in convective timing will be the key variables influencing final market adjustments before official observations are recorded.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 25 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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: Jun 23, 2026, 9:03 PM ET
Volume
$195,017End Date
Jun 25, 2026Market Opened
Jun 23, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 25 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 forecasts from Environment Canada and supporting models indicate a mostly cloudy June 25 in Toronto with a 60 percent chance of showers or thunderstorms, anchoring trader consensus around a daily high near 20–21°C. These conditions suppress daytime warming relative to climatological normals of 24–25°C for late June, while variable cloud cover and precipitation introduce modest uncertainty in peak readings. Ensemble guidance shows limited spread, keeping 22°C in play but reducing odds for 23°C or higher. With resolution imminent, the next model update and any rapid changes in convective timing will be the key variables influencing final market adjustments before official observations are recorded.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 25 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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
$195,017End Date
Jun 25, 2026Market Opened
Jun 23, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent official forecasts from Environment Canada and supporting models indicate a mostly cloudy June 25 in Toronto with a 60 percent chance of showers or thunderstorms, anchoring trader consensus around a daily high near 20–21°C. These conditions suppress daytime warming relative to climatological normals of 24–25°C for late June, while variable cloud cover and precipitation introduce modest uncertainty in peak readings. Ensemble guidance shows limited spread, keeping 22°C in play but reducing odds for 23°C or higher. With resolution imminent, the next model update and any rapid changes in convective timing will be the key variables influencing final market adjustments before official observations are recorded.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions