The National Weather Service (NWS) Seattle office has issued a special weather statement as a result of the increased probability of precipitation tonight and into tomorrow morning while temperatures are expected to be at or near freezing.
There is a possibility for the precipitation to take the form of snow flurries or hail, even at sea level according to the NWS statement.
Environment Canada is also forecasting a high probability for snow flurries between 11pm and 10am.
Both forecasts agree there is likely to be little to no accumulation and if there is any it will be gone quickly due to expected warmer temperatures in the afternoon.
Regardless of how the precipitation arrives, any is likely to make roads slippery given temperatures are expected to be at or near freezing overnight and continue until after the morning commute.