Say goodbye — and maybe good riddance — to weeks of on-and-off sub-zero temperatures.

The Pittsburgh region will warm up Monday morning after seeing a low of -2 degrees overnight, ushering in at least a week of forecasted highs around or above freezing, according to the National Weather Service.

A cold weather advisory for Allegheny, Armstrong, Beaver, Butler and Westmoreland counties is scheduled to run through 10 a.m. Temperatures are expected to hit a high near 30 degrees by mid-afternoon.

Winds will also be lighter than they have been the past several days, meaning wind chill will not be a factor, National Weather Service meteorologist Matt Burdy said.

The cold snap’s last gasp has brought significant disruption to the area. TribLive news partner WTAE lists more than 200 school districts and other organizations that are operating on a two-hour delay, including Pittsburgh Public Schools.

Only a handful of districts have called for closures.

Tuesday will bring vastly different weather. It looks to be the warmest day of the week, with high temperatures for the Pittsburgh metro and surrounding areas in the 40s and areas south of Interstate 70 possibly touching 50, Burdy said.

While that won’t last long, temperatures the rest of the week are expected to be closer to normal, with highs in the low 30s. By the end of the week, lows will be in the teens, but not below zero, Burdy said.

There is not yet any concern about river flooding from ice melting, Burdy said. It would take a significant warmup of 40 to 60 degrees over several days, along with rain, to trigger that.

There is only a slight chance of precipitation late Tuesday into early Wednesday, which Burdy said could see flurries mixed with rain.

Brian C. Rittmeyer is a TribLive staff writer. He can be reached at brittmeyer@triblive.com. Jack Troy is a TribLive staff writer. He can be reached at jtroy@triblive.com.

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