There is some cold air making its way into the air today and tonight. Winds should pick up this morning from the northwest and clear away the clouds and are expected to send temperatures down to -5°C by Tuesday morning.
If that temperature holds close to the ground then when precipitation comes in we could get snow. Whether it sticks or not and how long it lasts will be a question. It is not a sure thing and not all the models expect snow.
As usual though the Hump and definitely Sutton Pass will see a much better chance for snow. If you don’t have winter tires (snowflake) I would suggest not risking get stuck. There were a few cars on the side of the road Sunday after a strong bit of rain turned into snow for a little while and made a bit of a mess.
Take care out there and Happy Monday!