Environment Canada's latest forecast for Toronto Pearson International Airport projects a daytime high of 20°C on April 13 under cloudy skies with a 40 percent chance of showers, anchoring trader sentiment in the 19–21°C range at implied probabilities of 25.5 percent, 20.5 percent, and 18.5 percent, respectively. This reflects model ensemble consensus from GEM and GFS runs showing a 17–21°C spread, driven by uncertainty in cloud cover evolution—persistent overcast could cap temperatures at 18–19°C, while brief breaks or delayed showers might push toward 21°C—amid mild upper-level ridging above seasonal norms of around 13°C. New overnight model updates and tomorrow's forecast refresh could refine these closely matched odds before resolution using Wunderground data from the airport station.