High temperatures more than 10 degrees above normal are forecast through the weekend as May comes to a sunny, dry close around the Puget Sound area.

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High temperatures more than 10 degrees above normal are forecast through the weekend as May comes to a sunny, dry close around the Puget Sound area.

At Seattle-Tacoma International Airport, which has had no measurable rainfall since May 14, a high temperature of 78 is forecast for Friday, before dropping back to 74 on Saturday and 75 on Sunday.

Sea-Tac has had just 0.58 inches of rain so far this month, and may end the month with that amount, said Kirby Cook, National Weather Service meteorologist. Normal rainfall for May is 1.94 inches.

The driest and wettest Mays at the airport, in records going back to the 1940s, came just a year apart, Cook said: 0.15 inches in May 1947 and 5.83 inches in May 1948.

Although temperatures for the next few days will be well above the normal high of 67 for this time of year, forecasts do not call for record high temperatures.

The hottest May 28 at Sea-Tac was 92 in 1983. The May 29 record is 85, set in 1973.