After taking the plunge into Friday night, temperatures will rebound around Harrisburg, only to plunge again early next week.
The swings in temperature will make it hard for some people to adjust and can lead to melting and refreezing issues, that leave icy spots on roads and sidewalks.
Temperatures on Sunday will surge into the 30s, ahead of another push of Arctic air for early next week.
The front can produce a wintry mix changing to rain on Sunday, followed by a flash freeze Monday morning and midday.
After plummeting to near zero Monday night, the high on Tuesday is projected to be in the single digits.
Tune in to AccuWeather Live Mornings every weekday at 7 a.m. EST. We will be talking about the snowstorm in the Northeast and Midwest, along with the brutal cold.
Multiple tornadoes touched down across Indiana and Ohio on Wednesday, one of which flattened a Starbucks in the town of Kokomo, Indiana.
A budding tropical disturbance has the potential to strengthen significantly and reach Florida and the Bahamas with strong winds, coastal flooding and torrential rainfall during Sunday and Monday.
Rounds of showers and thunderstorms will bring the potential for flash flooding and localized damaging wind gusts through Thursday.
Stargazers will want to dig out their binoculars and telescopes this weekend as Venus and Jupiter shine so close that they appear as one large, bright star in the evening sky.
Following a taste of autumn chill to start the week, is summer heat and humidity over for the northeastern United States?
A deadly earthquake struck central Italy at 3:36 a.m. local time on Wednesday with tremors felt as far away as the capital city of Rome.
South Carolina (1885)
Hurricane struck SC; $1.3 million damage at Charleston with many fatalities.
10 degrees in Bowen, coldest August temperature ever in United States.
Philadelphia, PA (1972)
Last of 25 straight days without measurable rain.