Boston is in for a flux of temperatures, along with a chunk of rainy days, over the next week, according to National Weather Service forecasts for the next week.

“Quite the roller coaster of temperatures coming up with a big warm up mid week followed by much colder air for the end of the week,” NWS Boston posted on X, formerly Twitter, on Sunday.

The Boston region will kick off the week with highs in the mid-40s and higher lows in the high 30s to low 40s Monday and Tuesday, according to forecasts.

By Wednesday, the region will see a big surge in temperatures, reaching up to a high of 62 degrees, forecasts show.

The end of the week will see a quick plunge in temperatures, with highs staying lower in the mid-30s to low 40s through Sunday, the NWS predicts. Lows will drop into icier ranges in the 20s.

“Looking rather wet this week, especially Tuesday night into Wednesday night,” NWS posted Sunday.

The precipitation looks to remain “mostly rainfall,” NWS Boston said, avoiding the brief patches of snow from the last week. The NWS forecasters warned of a “low risk for some icing along and north of Route 2 and towards the Berkshires Monday night into Tuesday.”

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Boston is expected to see more “significant rainfall” Wednesday through the night into Thursday, forecasts show. Skies are expected to clear up Thursday and remain mostly sunny through the weekend.

Waters around Boston including those from from Provincetown to Nantucket saw a small craft advisory, common for the winter season, Sunday into Monday due to strong wind gusts. “Inexperienced mariners,” especially in smaller vessels, the advisory specified, should avoid the “hazardous conditions.”

Jonathan Slohoda cues the next song for the Harvard University Band Sunday. (Nancy Lane/Boston Herald)