WALLA WALLA — Break out the sunblock, the vacation of summer is about to end.
The cool, wet weather of late will soon give way to a heat wave with highs hitting 100 degrees by Monday, the National Weather Service warned today.
The mercury will begin to rise Friday as a ridge of high pressure pushes into the Pacific Northwest. The high pressure will bring increasingly hotter temperatures throughout the Walla Walla Valley and the Columbia River Basin.
Locally, daytime highs are expected to climb into the high 90s by this weekend with clear skies in the forecast. The sunny, hot weather will continue into next week with triple-digit days forecast for Monday and Tuesday.
While it will be hot here, denizens in the Tri-Cities area will be even hotter with a high of 103 degrees predicted by Tuesday. In fact, the area will be one of the hotter places in the region, weather service forecasters said.
People living in or visiting the mountain areas will enjoy somewhat cooler weather, with highs expected to climb into the upper 80s and 90s by the first of next week.