A chaotic Monday morning commute across much of the East Coast is causing a rollercoaster of temperatures across the country this week.

Rain fell along the I-95 corridor from Washington, DC to New York early Monday morning, with freezing rain and snow farther north in New Jersey, upstate New York and western Connecticut. Mixed precipitation left roads covered in ice, making commuting difficult in parts of Connecticut and Rhode Island.

Elsewhere, heavy rain and thunderstorms will move across the Ohio River Valley on Monday, with the possibility that the storms will be strong enough to produce severe weather with high winds, hail or even a tornado.

The system will move eastward during the day, reaching Pittsburgh at 2 p.m., Buffalo at 5 p.m., Philadelphia at 7 p.m. and New York at 9 p.m., where it will rain most of the night.

Boston will see rain until about 8 a.m. Tuesday, and Maine residents will continue to see rain until 10 a.m. Tuesday. The next burst of rain for the Northeast arrives Wednesday afternoon and should fall Thursday morning.

Forecasters say there will be more rain Monday evening in a separate system over the Midwest from Indiana to Missouri and Arkansas.

Forecasts show that after the rain there will be a warming and then a cooling of temperatures within a few days.

The Northeast will see a warming trend at the beginning of the week and a cooling trend at the end of the week. Monday will see temperatures as high as 50 degrees Fahrenheit from Washington, DC to New York. On Tuesday temperatures will rise to over 60°C.

D.C. could hit a daily record on Tuesday – the current record is 65 degrees, set in 2021.

Temperatures will begin to change again on Wednesday.

Well above average temperatures are expected in the West, with near daily record highs forecast for Phoenix from Wednesday through Saturday.

Meanwhile, it will be cooler in the east in the second half of the week and into the weekend.

On Saturday it will be very warm in the western half of America, while it will be cool in the eastern half.

However, large parts of the country will be under the influence of above-average temperatures by the holiday week next week, forecasts show.