Recent forecast updates from Environment Canada and global ensembles like GFS and GEM indicate a warm air advection ahead of a frontal system, positioning Toronto's May 18 high near 28–30 °C under partly sunny conditions. Variable cloud cover and a 30–40 % chance of afternoon showers or thunderstorms, however, introduce uncertainty by limiting peak insolation and enhancing evaporative cooling. This keeps the leading outcomes tightly clustered between 28 °C and 31 °C, with traders assigning the highest probabilities to 29 °C. Historical climatology shows typical mid-May highs near 20 °C, underscoring the current anomaly driven by a strong ridge over the eastern Great Lakes. Updated model runs and hourly observations from Pearson Airport through the afternoon will refine the exact maximum.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateHighest temperature in Toronto on May 18?
Highest temperature in Toronto on May 18?
29°C 27%
28°C 22%
31°C 22%
30°C 22%
BAGO
BAGO
May 18, 2026
22°C or below
<1%
23°C
1%
24°C
2%
25°C
2%
26°C
9%
27°C
10%
28°C
22%
29°C
27%
30°C
22%
31°C
22%
32°C or higher
5%
29°C 27%
28°C 22%
31°C 22%
30°C 22%
BAGO
BAGO
May 18, 2026
22°C or below
$553 Vol.
<1%
23°C
$441 Vol.
1%
24°C
$215 Vol.
2%
25°C
$26 Vol.
2%
26°C
$5 Vol.
9%
27°C
$22 Vol.
10%
28°C
$14 Vol.
22%
29°C
$67 Vol.
27%
30°C
$31 Vol.
22%
31°C
$7 Vol.
22%
32°C or higher
$33 Vol.
5%
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 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Recent forecast updates from Environment Canada and global ensembles like GFS and GEM indicate a warm air advection ahead of a frontal system, positioning Toronto's May 18 high near 28–30 °C under partly sunny conditions. Variable cloud cover and a 30–40 % chance of afternoon showers or thunderstorms, however, introduce uncertainty by limiting peak insolation and enhancing evaporative cooling. This keeps the leading outcomes tightly clustered between 28 °C and 31 °C, with traders assigning the highest probabilities to 29 °C. Historical climatology shows typical mid-May highs near 20 °C, underscoring the current anomaly driven by a strong ridge over the eastern Great Lakes. Updated model runs and hourly observations from Pearson Airport through the afternoon will refine the exact maximum.
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 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Binuksan ang Market: May 16, 2026, 12:03 AM ET
Volume
$1,414Petsa ng Pagtatapos
May 18, 2026Binuksan ang Market
May 16, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZThis market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Recent forecast updates from Environment Canada and global ensembles like GFS and GEM indicate a warm air advection ahead of a frontal system, positioning Toronto's May 18 high near 28–30 °C under partly sunny conditions. Variable cloud cover and a 30–40 % chance of afternoon showers or thunderstorms, however, introduce uncertainty by limiting peak insolation and enhancing evaporative cooling. This keeps the leading outcomes tightly clustered between 28 °C and 31 °C, with traders assigning the highest probabilities to 29 °C. Historical climatology shows typical mid-May highs near 20 °C, underscoring the current anomaly driven by a strong ridge over the eastern Great Lakes. Updated model runs and hourly observations from Pearson Airport through the afternoon will refine the exact maximum.
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 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$1,414Petsa ng Pagtatapos
May 18, 2026Binuksan ang Market
May 16, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZRecent forecast updates from Environment Canada and global ensembles like GFS and GEM indicate a warm air advection ahead of a frontal system, positioning Toronto's May 18 high near 28–30 °C under partly sunny conditions. Variable cloud cover and a 30–40 % chance of afternoon showers or thunderstorms, however, introduce uncertainty by limiting peak insolation and enhancing evaporative cooling. This keeps the leading outcomes tightly clustered between 28 °C and 31 °C, with traders assigning the highest probabilities to 29 °C. Historical climatology shows typical mid-May highs near 20 °C, underscoring the current anomaly driven by a strong ridge over the eastern Great Lakes. Updated model runs and hourly observations from Pearson Airport through the afternoon will refine the exact maximum.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update
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