A cold front is poised to swing through the area by Saturday, dropping temperatures by about ten degrees and bringing some cloud cover with it. The front will also help keep the smoke from the fires burning in Siskiyou County out of southern Oregon, which will allow for some blue sky to peek through over the course of the weekend.
Smoke is typically directed by the winds blowing at about 10,000 feet into the atmosphere. The past few days, those winds have been blowing from the west southwest, sending smoke from the Happy Camp Complex into southern Jackson and Klamath Counties. Behind the aforementioned cold front, those winds aloft will shift direction to the north northwest. In doing this, the smoke will mainly be kept in northern California, with the exception of the fires burning in central Oregon. When the winds have a stronger northerly component, it’s possible that the smoke from large fires near Bend could make its way down into southern Oregon.
So, for the last unofficial weekend of summer, expect mild temperatures, partly cloudy skies, and slightly warmer conditions by Labor Day. Highs will be in the upper 80′s in the Rogue Valley and northern California, the lower 80′s in the Klamath Basin, and the lower 70′s along the coast and in the mountains.
Chief Meteorologist Kate McKenna