SEATTLE -- A heat wave began Friday in Western Washington that is expected to reach the low 90s by the middle of next week.

KING 5 Meteorologist Jim Guy says highs atSea-Tac Airport are expected to reach the low 80s Friday and Saturday, then warm up to the mid-to-high 80s Sunday and Monday before topping out at 90 on Tuesday.

The record for July 1 at Sea-Tac Airport is 87 degrees, set most recently in 1995. And the record for July 2 is 92, set in 1968.

Things will cool down considerably Wednesday and Thursday.

Temperatures east of the Cascades will be even hotter, as they usually are, with weekend highs in the 80s and 90s, possibly breaking 100 on Monday and Tuesday.

In Spokane, temperatures in the 90s are expected Saturday and Sunday during the Hoopfest 3-on-3 basketball tournament. The event is expected to draw 28,000 players and up to 200,000 people downtown. They are being warned to drink plenty of fluids to avoid heat-related problems.

The downside of great weather is the risks some people take to enjoy it at rivers, lakes and beaches in Washington. Cold water is a shock.

Most hot weather deaths are from drowning because rivers are fed by melting snow, said National Weather Service meteorologist Chris Burke. You go in and get into trouble right away.

Read more about how to make water safety a priority during hot weather.

Authorities also are advising people to protect themselves from heat-related illnesses and not to leave children or pets in cars.

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