San Juan County
... Light snow and freezing drizzle expected in parts of western
Washington from Monday through Tuesday morning...
Light snow will spread inland from the coast on Monday... as weak
onshore flow starts pushing warmer and moister Pacific air into
the cold air mass that currently sits over western Washington.
Along the coast... the light snow will quickly transition to
drizzle or light rain at the beaches on Monday afternoon. Inland
from the beaches... places like Aberdeen and Montesano will remain
at or below freezing... causing a gradual mixing with freezing
drizzle. Meanwhile on Monday afternoon and evening... light snow
will spread across much of the remainder of western Washington.
Snowfall amounts will remain light... with accumulations generally
remaining under one inch.
Overnight and early Tuesday morning... snow will transition to
light freezing rain or freezing drizzle over the Puget Sound
lowlands and in the southwest interior of Washington. Freezing
precipitation will also be light... but it may be enough for
slippery and hazardous conditions on Tuesday morning on untreated
roadways and sidewalks.
Temperatures will rise above freezing on Tuesday afternoon over
all of The Lowlands... reaching the mid to upper 30s along the I-5
corridor. Therefore... freezing drizzle will turn over to all
liquid... and the threat of freezing and frozen precipitation will
end over The Lowlands.
A return to more normal temperatures in the 40s is expected on
Wednesday... with an ordinarily rainy and breezy Pacific front
expected on Thursday.
... Record low temperature set at Seattle WA WFO...
A record low temperature of 18 degrees was set at Seattle WA WFO
today. This breaks the old record of 19 set in 2009.