The type of precipitation that falls depends not just on whether temperatures are at or below freezing close to the ground, but how warm or cold air is higher up in the atmosphere.
Blizzards are expected to hit the country during a freak freezing cold snap at the end of November.
Snow may begin as some cold rain at first. Mostly cloudy, with a high near 34. Even cooler air will move in with highs in the mid to upper 40s.
QUIETER WEEKEND: Friday afternoon and evening quiet down with temperatures in the mid-40s. A huge area of high pressure across northern Europe, a huge area of low pressure in the mid-Atlantic and the United Kingdom is stuck in between. Northwest wind around 5 miles per hour.
Friday Night: Mostly clear, with a low around 40.
As a cold front approaches us, cloud cover has increased while temperatures stay chilly throughout the day.
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Cold weather continues today with brisk northerly winds. Wednesday night, showers will increase over eastern portions of the area as lows drop down into the middle to lower 30's.
What the models do agree on tonight is the timing of the precipitation, meteorologists say, with most of the rain occurring from about 9 p.m. this evening through mid-morning Tuesday.
'The weather will be predominantly settled but the temperatures overall in this period will be below the average and could extend to frosts and snow over northern hills and mountains'.
A temperature of 65F (17C) by Thursday would beat the 61F (16C) expected in Madrid - while daytime highs of 46F (8C) expected in London next Monday would be below the 48F (9C) forecast for Vancouver in Canada.
The snow showers could linger into Wednesday morning, then we expect a warmer and drier day on Thursday with highs around 40°.