Drastic weather change coming with January-like cold just over week away

Frederick Owens
December 5, 2017

Thursday night: A low of 23.

Though the week will start off dry, rain will move into the Valley late Monday night, with showers throughout the day on Tuesday. An associated cold front will pass through the state Tuesday allowing Arctic air to infiltrate central IN mid-to-late week. For the remainder of the week into the weekend, expect daytime temperatures in the 40s to, at most, 50s and nighttime temperatures mainly in the 30s with some 20s possible. We might have a slightly better chance for snow Saturday, perhaps mixed with some rain, as a clipper low pressure system moves in from the Great Lakes and tries to transfer its energy to a coastal low pressure system perhaps off the Jersey Shore.

Thursday highs stay chilly in the upper 40s. "The game-changer, so to speak, is a cold front Tuesday night". Cold rain showers possibly return by Thursday evening, especially along the Grand Strand.

"It will get very cold in these parts of Ireland, with temperatures dropping to -3C at night", he said.

The image above shows you the expected temperature anomalies on Saturday, December 9, 2017.

Friday: Partly sunny; high of 37.

With cloudy skies dissipating overnight, conditions are setting up for radiational cooling tonight, so there will be a wide range of temperatures in place throughout the region come sunrise on Monday, according to the National Weather Service.

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Friday: Mostly cloudy, with a high near 42.

"So anywhere exposed to that very strong northerly wind could well see some snow by Friday".

While there's only about a 30 percent chance of any wintry precipitation, all of those days are expected to be seasonably frigid.

The weekend could end with the coldest air so far this season, with a high only in the upper 30s on Sunday despite sunshine.

You can see live weather updates via the National Weather Service and other Twitter sources below.

For the latest forecasts, visit PennLive's weather page.

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