CLARK COUNTY, Wash. — People in southwest Washington are being told to prepare for "dangerously hot conditions" starting July 4.
The National Weather Service upgraded a Heat Watch to an Excessive Heat Warning that goes into effect from noon July 4 to 11 p.m. July 7.
High temperatures during those days could exceed 100 degrees during the day. Overnight temperatures will remain warm, with lows ranging from the mid-60s to low 70s, according to the Weather Service.
The hottest temperatures are expected to be July 5-6.
There is a 10-15% chance temperatures will exceed 110 degrees on July 5 and 7 and a 25-35% chance that temperatures will exceed 110 in some areas on July 6, according to the Weather Service.
The Heat Warning also includes portions of northwest and west central Oregon.
An Excessive Heat Warning will also be in effect for portions of central and eastern Washington beginning this weekend and lasting into next week.
Heat-related illnesses increase during extreme heat events, according to the Weather Service.
The Weather Service suggests people living in impacted areas drink plenty of fluids, stay in air-conditioned rooms and stay out of the sun. Children and pets should not be left in unattended vehicles.
Western Washington Forecast
High pressure building off the coast will drift east toward Washington state by mid-week, according to KING 5's meteorologists, bringing summer conditions to western Washington.
Current forecast models show sunny skies and high temperatures in the upper 70s to low 80s by Thursday.
By Friday, the high pressure settles in along the coast, pushing highs into the mid-80s for many areas.
The warmest conditions will be over the weekend, with hotter temperatures in the upper 80s to low 90s.
Forecast models are showing temperatures beginning to cool off a bit by Monday, with highs in the mid-80s.
Download the KING 5 app to check the interactive radar near you, as well as the latest forecast, cameras and current conditions.
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