When Is Winter 2025 Starting In Canada. See our 2025 spring weather forecast for 18 u.s. Winter 2025 starts on sunday, december 21st in the northern hemisphere, with the first day of winter being the shortest daylight day of the year with the earth's axis having.
See our 2025 spring weather forecast for 18 u.s. Currently, a strong jet stream in the pacific is helping to push a warmer pattern over.