Driving the news: Highs are forecast to brush up against 70 before dropping about 10-15 degrees Tuesday and settling back into the mid-50s to near 60 for the rest of the week, according to the National Weather Service.

What they're saying: "I think anyone who's been here a while knows to expect disappointment," said Dustin Guy, a meteorologist with the National Weather Service in Seattle. "There's a reason people don't come here for spring break."

What's next: A weather system from the northwest is predicted to move in Monday night, knocking temperatures down, Guy said.

• The rest of the week won't be a washout, though, with sun and blue skies in the forecast through Friday, according to NWS Seattle meteorologist Dana Felton.

Zoom out: Later sunsets are just around the corner. Seattle's will hit 8pm starting April 16, but more daylight doesn't always mean sunnier weather this time of year.

• Locals joke that summer doesn't reliably start until July 5, after the fireworks and false starts of June — sometimes called "June-uary" for its stubborn stretch of chilly gray.

The bottom line: It might feel like spring has arrived, but don't get your hopes up too much. In Seattle, that feeling rarely sticks.