There will be quite a range of temperatures, with single digits to the far north and highs near 30° to the south. Winds will be on the quick side as we move through the day as the colder air pushes in. By the time you get going Tuesday morning, temperatures will be right around 0°.
Arctic air will settle in for Tuesday, with high temperatures in the teens for most of the area.
The below average temperatures will stick around through the rest of the week. Weather models point to a good chance of snow by late in the week. The start of next weekend is looking bitterly cold, as the biggest blast of cold air is set to arrive then.