When Is Spring 2025 In Canada Start. For those of us in the northern hemisphere, this was marked by the. The first day of spring is march 20, 2024, at 5:02 a.m.

Spring will arrive on thursday, march 20, 2025, and last until june 21, 2024. The colder airmass is over western canada and the northern united states, while a more westerly flow brings a temperature rise to the central and eastern united states.