Mild air masses likely to outnumber the chilly air masses for a good part of October.
Jet stream pattern across North America will become amplified across North America into next week, which means more extremes in weather.
Warm weather will dominate in the eastern half of the country for the next week. Pattern change possible during the last week of September.
The jet stream will strengthen from the Pacific across southern Canada over the next 1-2 weeks which will keep any sustained chilly/cold air masses up across western Alaska and eastern Siberia.
The latest clues to the long range into the month of October.
Late-season heat in the East and mountain snow in the West. Welcome to the fall season!
Dry in the East, while cool and unsettled in the Prairies and West over the next week.
Keep the pools open! Warmth to prevail in the East for the next few weeks.
Warm end to August in the East and far West, while the southern Prairies get some early season chill.
Latest clues to the weekly patterns through mid-September.