An unusually warm couple of days are on the horizon.
From Friday to Tuesday, each day will be about 5 to 7 degrees warmer than the last, according to National Weather Service forecasters in Norton. High temperatures will reach the 50s on Monday and Tuesday.
Meteorologist Bill Simpson said a freezing low Monday morning could turn into a high of 53 degrees, carrying into Tuesday until weather returns to “near normal” Wednesday with a high in the low 40s.
[7 Day Forecast] After another very cold day, temps moderate to seasonable levels this weekend with dry weather continuing. Highs should reach well above normal early next week before colder weather returns by Wed. Next real chance for precipitation will be late next week. pic.twitter.com/TZqCRxyeNq
— NWS Boston (@NWSBoston) February 1, 2019
The heavy fluctuation in temperature is the result of an amplified jet stream switching direction to pull in warmer air, Simpson said.
“When you have a very cold air mass dipping down, on the backside it’s usually a return southwest flow,” he said. “It’s usually pretty warm.”
Simpson said he sees this weather pattern in Boston about every three years, but the temperatures aren’t record-breaking.
NWS Boston tweeted that the highs will be “well above normal.”