A frigid northwest flow of air over the Maritimes on Tuesday will bring well below normal temperatures, says CBC meteorologist Jim Abraham.
"Wind chills this morning vary between –20 C in parts of Nova Scotia to –30 C in sections of northern New Brunswick," he said.
The cold temperatures will be accompanied by plenty of sunshine for all three Maritime provinces, although conditions will be cloudy for areas exposed to the Gulf of St. Lawrence.
"Winds will shift to the west on Wednesday," Abraham said.
"This will allow temperatures to moderate and sunshine will continue."
He said high pressure will dominate for the rest of the week with comfortable temperatures while the weekend will bring some snow, likely changing to rain on Sunday.
New Brunswick forecast
Northern New Brunswick
Tuesday: It will be mainly sunny with cold northwest winds at 20 km/h and wind chills in the morning making it feel near –30. The afternoon high will reach –11 C.
Tuesday night: This region of the province can expect clear skies with a low near –15 C.
Wednesday: A mix of sun and cloud is expected with winds from the west at 25 km/h and a high near –5 C.
Fredericton and area
Tuesday: It will be mainly sunny with cold winds from the northwest at 20 km/h and wind chills making it feel near –30 in the morning. The afternoon high will reach –11 C.
Tuesday night: The Fredericton area can expect clear skies with a low near –14 C.
Wednesday: Mainly sunny skies are expected with a high near –3 C and winds from the west at 20 km/h.
Southern New Brunswick
Tuesday: It will be mainly sunny with cold northwest winds at 15 km/h and a wind chill making irt feel near –30 in the morning. An afternoon high of –10 C is expected.
Tuesday night: It will be clear with a low near –13 C.
Wednesday: A mainly sunny day is expected with winds from the west at 25 km/h and a high of –3 C.