Got frozen pipes? Don't count on them thawing until sometime Thursday, forecasters say. 

While the record-breaking cold throughout southeast Louisiana is expected to slowly climb above freezing Wednesday, that minor respite likely won't be long or warm enough to melt ice that's not exposed to direct sunlight, said Tim Destri, a meteorologist with the National Weather Service Weather Forecast Office for New Orleans and Baton Rouge.

"Anything in the sun will start thawing a little bit but everything shaded may not thaw at all," Destri said.

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That's good news for roadways -- where some of the ice that built up from Tuesday night's wintry mix may start to melt -- but less hopeful for those wrestling with frozen pipes under their houses.

In New Orleans, temperatures are expected to slowly rise throughout the day but will only climb above freezing for a few hours in the afternoon, maxing out around 35 degrees, Destri said. A more significant thaw won't occur until Thursday, when the area is expected to get above freezing by mid-morning and get as high as 42 degrees by mid-afternoon, he said.

But another freeze is expected sometime after 10 p.m. Thursday, Destri said.

Daily records set in 1977 were broken throughout the New Orleans area overnight. 

Louis Armstrong International Airport - which shut down Wednesday morning due to ice on the runways - reported temperatures as cold as 20 degrees, three degrees colder than its daily record. Slidell's low of 17 degrees was a hair lower than the 18 degree temperature recorded on Jan. 17, 1977.

The lowest temperature recorded in Baton Rouge was 14 degrees, four degrees colder than the daily record.

Wind chill left many areas feeling at or below zero, Destri said. The lowest estimates came from Hammond and McComb, Miss., which both got to -1 Farenheit.

Follow Jeff Adelson on Twitter, @jadelson.​