Climate model grid Grid center: 43.500°, -79.375°; resolution: 0.5° × 0.625°; about 23.0 km from Toronto. These are historical data from a coarse model grid, not readings from a local weather station. Coast, terrain and elevation can cause local differences.
These are historical monthly averages, not values predicted for this particular day.
Calculated sun times for Toronto in America/Toronto; cloud and terrain can change visible sunlight. Future local times use current time-zone rules.
Seasonal background
Autumn background
In temperate regions, autumn brings shorter days and a transition towards colder conditions. Rain, wind and the first frost or snow can affect different places at different times. Compare your route’s local forecasts rather than treating one city as representative of the whole region.
Plan with the right time horizon
For plans far ahead, compare seasonal conditions and daylight. Check a local weather forecast closer to departure, then review its hourly detail and official warnings. Monthly averages cannot tell you whether a particular day will be dry, calm or snowy.
A changing climate
As the climate changes, familiar patterns of temperature, rainfall and snow can shift. Historical averages provide a reference, not a guarantee for future years. Climate projections describe possible longer-term changes under stated assumptions; they do not predict the weather on your selected day.
Weather values use available forecast data for the selected date. Climate values are historical monthly means for the stated reference period and location. Daylight comes from astronomical calculations. These describe different things and are labelled separately; missing data are not replaced with invented daily forecasts.