A high pressure ridge (the shaded area off shore) will strengthen over the Pacific Northwest bringing back the summer heat.

High Pressure Ridge building offshore

After some AM clouds, today will be mostly sunny and warmer with Willamette Valley highs at 85. It will be warmer yet Friday and Saturday with highs of 90 and 92 respectively. Warmer in the Umpqua Basin. An upper level trough of low pressure will send a cold front through the state late Saturday night and Sunday cooling us down to highs of 82 on Sunday and 76 by Monday.

Front moves in to cool us off

That will bring at least a slight chance of showers Monday night through Wednesday with temperatures cooling of to the mid 70s.

Don’t forget this week’s weather quiz. How have athletic shoes been used in charting ocean currents? Please place your answer as a response. The first person to correctly answer the question will win on one week of free weather forecasts. You can win only one time per year. Good luck.