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An upper level low is moving closer from the West (see the blue arrows moving in a counterclockwise direction) as high pressure East of us moves farther away. A frontal system will bring back the rain Monday and Monday night. High pressure will return about mid week to dry us a bit, but it won’t last long as another frontal system will move into the Pacific Northwest.

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Advisories: NONE AT THIS TIME.

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Here are your detailed forecasts. **

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy tonight and mostly cloudy and cooler with rain becoming likely (60%) Monday low 48 high 65. Evening rain then rain likely (60%) and cooler late Monday night low 44. Showers likely (60%) Tuesday then mostly cloudy in the evening and partly cloudy with a (30%) chance of showers at night high 55 low 35. Mostly cloudy with a slight (20%) chance of showers Wednesday through Thursday highs 56-60 low 36. Mostly cloudy with a (30%) chance of showers Thursday night through Saturday night  lows 37-40 highs 60-63. Partly cloudy with a (30%) chance of showers Sunday high 63.

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Forecast for the Umpqua Basin including Roseburg:  Becoming partly cloudy tonight, then mostly cloudy with rain likely (60%) Monday, rain Monday night , and showers likely (60%)Tuesday lows 46-44 highs 68-55. Look for a (40%) chance of showers Tuesday night  snow level 3,500′ and mostly cloudy Wednesday and Wednesday night with a (30%) chance of showers lows 40-36 high 56. Just a slight (20%) chance of showers Thursday through Friday night highs 62-66 low 36. Mostly cloudy with a (30%) chance of showers Saturday and Saturday night and a slight (20%) chance of showers Sunday highs 67-63 low 40.

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Partly cloudy this evening then mostly cloudy tonight low 46. Rain likely (60%) Monday morning then rain and cooler in the afternoon and Monday night high 57 low 44. Mostly cloudy with showers likely (60%) Tuesday and a (30%) chance Tuesday night high 54 low 40. Mostly cloudy with a (30%) chance of showers Wednesday and Wednesday night and a slight (20%) chance of showers Thursday through Friday night highs 53-57 lows 39-35. Mostly cloudy with a (30%) chance of showers Saturday and Saturday night and a slight (20%) chance of showers Sunday highs 54-57 low near 40.

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Forecast for the Cascades of Lane County:  Partly cloudy tonight free air freezing level 9,000′  low 38. Mostly cloudy with a (40%) chance of AM rain Monday then likely (60%) and cooler Monday afternoon snow level 8,000′ falling to 7,000′ in the afternoon high 56. Rain Monday night snow level 5,500′ falling to 5,000′ late at night low 28. Mostly cloudy rain and snow showers likely (60%) Tuesday and a (40%) chance Tuesday night snow level 4,500′ falling to 4,000′ high 39 low 23. Mostly cloudy with a (30%) chance of rain and snow showers Wednesday through Thursday night snow level 4,500′ highs 43-54  lows 24-26. Partly cloudy with a (30%) chance of rain and snow showers Friday and Friday night snow level 4,500′ high 50 low 26. Mostly cloudy with a (40%) chance of rain and snow showers Saturday and Saturday night, then partly cloudy with a (30%) chance of rain and snow showers Sunday snow level 4,500′ falling to 4,000′ Sunday highs 45-43 low 24.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.