An upper level low (shaded area) is still bringing cold modified Arctic air through Canada to us. The colder weather will last into the weekend, but it will slowly warm up a bit.

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For the Willamette Valley: Look for a mix of clouds and sun today high near 29-32. Partly cloudy at night low still very cold near 10-13. Wednesday mostly sunny  high 30-33 and mostly clear and not quite as cold overnight  low 16-20. There  will be a mix of clouds & sun Thursday high 33-35 partly cloudy overnight low 17-19. Friday partly cloudy high near 40 mostly cloudy at night with a (40%) chance of rain and light freezing rain low 28-30. Mostly cloudy and warmer Saturday with a (60%) chance of rain and freezing rain in the morning with afternoon rain likely (60% chance) high near 45.  Saturday night through Monday will be mostly cloudy with rain likely (60%) chance of rain lows 35-38 high 44-46.

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For the Umpqua Basin: Partly cloudy in the AM Today then sunny this afternoon high in the low to mid mid 30s mostly clear at night low near 14-16. Sunny Wednesday morning and then partly cloudy high 36-38 low 16-18. Thursday partly cloudy in the AM then mostly cloudy by afternoon high 37-42 . Thursday night mostly cloudy low in the low 30s. Friday mostly cloudy with a (50%) chance of rain high low to mid 40s.  Rain will be likely (60%) Friday night through Monday highs mid to upper 40s lows near 40.

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Advisories: For the South Oregon Coast:   A FREEZE WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 9 AM WEDNESDAY. A FREEZE WATCH IS IN EFFECT WEDNESDAY EVENING THROUGH THURSDAY MORNING .

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Forecast for the South Coast: Skies will be sunny today and mostly clear tonight high 34-37 low 20-23. Sunny  Wednesday highs will be in the low 40s and low near 30. Thursday partly cloudy n the AM, then mostly cloudy at night high rising to the mid 40s. Mostly cloudy Friday with a (70%) chance of rain high 47. Mostly cloudy rain and breezy Friday night through Saturday night high 48 low 42. Rain likely (60%) Sunday through Monday high in the low 50s low near 45.

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For the Cascades:  The free air freezing level will be at the surface today through Wednesday night, staying below pass levels through Thursday. The free air freezing level will be at 2,500′ Thursday night & Friday, 3,500′ Friday night. The snow level will be at 4,000′  Saturday and  Saturday night & 3,500′ Sunday. The level will be at 4,500′ Sunday night and 4,000′ Monday.