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Thursday was record-breaking hot, but Seattle residents shouldn’t get used to the summer weather just yet, the National Weather Service warns.

Seattle’s high temperature of 85 degrees broke the previous record set in 1998 and 1976 by 4 degrees, according to weather-service meteorologist Ni Cushmeer. Wednesday’s high of 82 wasn’t enough to shatter the previous record of 85, but it was the first time since Sept. 12 that the mercury rose above 80.

The heat this week broke records throughout the region. On Wednesday, Hoquiam and Quillayute airports, near the coast, recorded their hottest April temperatures ever with a high of 84 degrees.

Olympia’s temperature on Wednesday went from the 30s in the morning to the 80s in the afternoon. Bellingham’s high of 76 on Thursday surpassed the previous record of 74 set in 2004 and 1991.

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The toasty two days were caused by a thermal trough, a region of high pressure coming from California, said meteorologist Josh Smith. Typical highs for this time of year are in the low 60s.

Friday’s forecast for downtown Seattle calls for a high of 71 with a 30 percent chance of rain in the afternoon.

The weekend is expected to bring cooler temperatures, the weather service says. Air will move inland from the coast — cooler because it has been over water. Saturday and Sunday, the highs are expected to be near 60 with lows in the upper 40s, and a chance of showers.

Don’t get used to the warmth quite yet, Smith said. “The typical temperature for right now is not in the 80s, that’s for sure.”

Paige Cornwell: 206-464-2530 or

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