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The jet stream shows a high pressure ridge ( “arch” shaped area over the Pacific Northwest) that has kept us under a relatively calm weather pattern is moving Eastward away from us.  The next frontal system (shown offshore) will start moving through with other frontal systems following behind it (positions shown are for Tuesday). Remember that, particularly this time of the year, often when it’s not raining it is usually fogging.

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFET FROM 8 PM TONIGHT UNTIL 4 AM SUNDAY ABOVE  5,000 FT. FOR THE NORTH CASCADES NOT INCLUDING THE CASCADES OF LANE COUNTY. A HIGH WIND WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE BEACHES AND HEADLANDS OF THE NORTH AND CENTRAL OREGON COAST AND THE NORTH AND CENTRAL COAST RANGE. A HIGH WIND WATCH IS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A HIGH WIND WATCH IS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY EVENING FOR JACKSON COUNTY. A HIGH WIND WATCH IS IN EFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.

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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: Mostly cloudy with rain beginning this evening and increasing tonight (0.50 in. of rain possible), mostly cloudy with rain likely (60%) Sunday, a (30%) chance of rain Sunday evening (0.10 in. of rain possible) and again Monday AM, rain likely (60%) Monday afternoon (0.25 in. of rain possible), then rain Monday night (0.50 in. of rain possible) and windy (wind: S 15-25 mph gusts to 35 mph), periods of rain Tuesday, and showers likely (60%) Tuesday night lows 40-33 highs 53-45. Mostly cloudy with showers likely (60%) Wednesday and Wednesday night, then a good (50%) chance of showers Thursday through Saturday highs 49-44 lows 34-30. (seasonal  averages high 50 low 35)

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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with a good (50%) chance of rain this evening, rain late tonight and breezy (wind: S 15-25 mph decreasing to S 10-15 mph very late), cloudy with rain likely (60%) Sunday AM, a (40%) chance of rain Sunday afternoon, mostly cloudy Sunday night, mostly cloudy with a slight (20%) chance of AM rain Monday, rain likely (60%) in the afternoon, rain and breezy (wind: S 15-25 mph gusts to 40 mph in the evening) Monday night (snow level 3,500 ft. falling to 3,000 ft. late) lows 45-38 highs 58-53. Mostly cloudy with rain Tuesday, rain and snow showers Tuesday evening, rain and snow showers likely (60%) Tuesday night through Thursday, rain and snow showers likely (60%) Thursday night and Friday AM, then a good (50%) chance of rain and snow showers Friday night and  and a (30%) chance Saturday highs 45-42 rising to near 50 Saturday lows 37-32. (seasonal averages high 54 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a (30%) chance of rain this evening, rain late tonight and windy (wind: S 20-30 mph decreasing to S 15-20 mph late at night), cloudy with AM coastal rain Sunday, AM rain likely (60%) inland, a good (50%) chance of rain Sunday afternoon, a slight (20%) chance of coastal rain Sunday evening, a slight (20%) chance of rain Monday AM, then rain and windy (wind: S 20-30 mph gusts to 45 mph in the afternoon) Monday afternoon, and  rain and windy (wind: S 25-35 mph gusts to 50 mph shifting SW 20-25 mph gusts to 40 mph late at night) Monday night, mostly cloudy with rain and breezy Tuesday, evening showers, then showers likely (60%) Tuesday night lows 49-38 highs 56-45. Mostly cloudy with showers likely (60%) Wednesday, rain and snow showers likely (60%) Wednesday night, showers likely (60%) Thursday,  a (40%) chance of rain and snow showers Thursday night and a good (50%) chance Friday, then a  good (50%) chance of showers Friday night, and a (30%) chance of showers Saturday highs 44-50 lows 35-39. (seasonal averages high 54 low 41).

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Forecast for the Cascades of Lane County:  Cloudy with a (30%) chance of rain this evening, rain and snow late tonight (2-4 in. of snow possible), periods of AM rain and snow, then rain likely (60%) Sunday afternoon (1-2 in. of snow possible), a slight (20%) chance of rain Sunday evening, then just mostly cloudy, mostly cloudy with a slight (20%) chance of rain Monday AM, rain and snow likely (60%) Monday afternoon, rain and snow Monday night (3-7 in. of snow possible) and breezy (wind: SW 15-25 mph gusts to 35 mph), periods of snow Tuesday, and snow showers likely (60%) Tuesday night snow level 5,000 ft. falling to 4,500 ft. late tonight, 4,500 ft. rising to 6,000 ft. Sunday, 6,000 ft. Sunday night, 5,000 ft. Monday afternoon, 3,500 ft.  Monday night, 3,000 ft. Tuesday, and 2,500 ft. Tuesday night lows 30-24 highs 43-33. Mostly cloudy with a snow showers  likely (60%) Wednesday through Thursday, mostly cloudy with snow showers likely (60%) Thursday, then a good (50%) chance of snow showers Thursday night through Saturday snow level 2,500 ft. Wednesday and Saturday, at the surface Thursday night through Friday night highs 34-40 lows 23-27.

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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.