It’s not quite a polar vortex, but Seattle is going to be cold this week, with forecast temperatures about 15 degrees below normal and the possibility of snow Friday or Saturday, according to the National Weather Service.
Highs in the mid-30s and lows in the upper teens are forecast until Saturday, meteorologist Josh Smith said. Half an inch to 3 inches of snow is expected to fall Friday night or Saturday, with a changeover to rain on Saturday night.
Cold air coming from the interior of Canada through the Fraser Valley near Vancouver. B.C., is causing the low, possibly record-breaking temperatures, Smith said.
“It’s really cold up there, hence, we are cold down here,” Smith said.