Wednesday brought the third day in a row of record-breaking temperatures on Long Island. But, enjoy it while you can, as this short blast of flip-flop weather gives way to cooler conditions on Thursday, forecasters say.

By late morning Wednesday, the temperature had hit 80 at Long Island MacArthur Airport, exceeding the daily record high set in 1998 by 6 degrees, the National Weather Service’s Upton office said. By close to 3:30 p.m., it was 84.

In addition, Oct. 19 has become the latest date in a calendar year to see 80 degrees since records started being kept at the airport in 1984, the weather service said. The previous latest 80-degree day was Oct. 15, 1990, when the thermometer topped out at 81.

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Still, that’s not to say that days earlier in the month haven’t seen healthy warm-ups — such as 88 degrees on Oct. 8, 2007, according to weather service data.

As for Wednesday, News 12 Long Island Rich Hoffman called for a mix of sun and clouds with a southwest wind from 5 to 15 mph.

“It will be breezy and cooler for the weekend,” Hoffman said.

On Tuesday, it reached 76 degrees at Long Island MacArthur Airport, surpassing the previous daily mark of 74 in 2006, the service’s Upton office said.

Monday’s high at the Ronkonkoma airport was 77, one degree higher than the record of 76 in 1996.

The normal average high temperature for this time of year is 62 degrees, Hoffman said.

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Which is more comparable to what’s ahead, according to forecasters.

Wednesday night is expected to be partly cloudy with areas of fog and winds shifting north-northeast, Hoffman said. Overnight lows are near 60.

Thursday is mostly cloudy with a high near 67 degrees and a chance of some afternoon showers, Hoffman said.

Friday is cloudy with scattered showers.

On both Thursday and Friday, daily highs range from 65 to 70, Hoffman said.

@Newsday

With Gary Dymski