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Advisories: NONE AT THIS TIME.
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A high pressure ridge (“Arch” shape on the jet stream) is moving away from us and the airflow behind it will feed moisture our way. A frontal system (shown offshore) will push through Sunday bringing back the rain, then a break as high pressure takes over again. Upper air low pressure (“U” shape on the jet stream) will return the moisture flow Wednesday sending more rain into the Pacific Northwest.
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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 this evening, mostly cloudy tonight, cloudy with a slight (20%) chance of rain Sunday AM, rain (0.15 in. of rain possible) Sunday afternoon, rain in the evening, partly cloudy with a (40%) chance of showers late Sunday night (0.20 in. of rain possible), a mix of clouds and sun Monday AM, mostly sunny in the afternoon, partly cloudy with areas of fog late Monday night and Tuesday AM, partly cloudy in the afternoon, then mostly cloudy with a (30%) chance of showers Tuesday night lows 40-29 warming to 35 Tuesday night highs 54-45. Mostly cloudy with a (30%) chance of showers Wednesday, partly cloudy Wednesday night through Thursday night, a mix of clouds and sun Friday, then partly cloudy Friday night and Saturday highs 48-43 warming to 46 Saturday lows 34-29. (seasonal averages high 49 low 36)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with patchy fog late tonight, cloudy with patchy fog Sunday AM, rain likely (60%) Sunday afternoon ( under 0.10 in. of rain possible), rain in the evening, a good (50%) chance of rain late Sunday night (0.25 in. of rain possible), partly cloudy Monday AM, becoming sunny in the afternoon, mostly clear in the evening, partly cloudy with areas of patchy fog late Monday night, mostly cloudy with patchy fog Tuesday AM, partly cloudy in the afternoon, then mostly cloudy with a slight (20%) chance of rain Tuesday night lows 40-36 warming to 39 Tuesday night highs 54-52. Mostly cloudy with a (30%) chance of showers Wednesday, partly cloudy with areas of fog Wednesday night through Thursday night, then mostly cloudy with areas of early AM and late night fog and some lingering fog Friday through Saturday highs near 50 lows 38-33 warming to 36 Friday night. (seasonal averages high 50 low 39)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy tonight, cloudy with patchy AM fog inland, rain Sunday afternoon (0.25 in. of rain possible) and evening, a (40%) chance of rain late Sunday night (0.30 in. of rain possible), partly cloudy Monday AM, sunny in the afternoon, partly cloudy Monday evening, mostly clear Monday night, mostly cloudy Tuesday AM, partly cloudy in the afternoon and evening, then becoming mostly cloudy with a slight (20%) chance of rain Tuesday night lows 46-39 highs 56-52. Mostly cloudy a (40%) chance of showers Wednesday, partly cloudy with areas of late night and early AM fog with some lingering fog Wednesday night through Saturday highs 53-56 lows 42-35. (seasonal averages high 53 low 41).
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Forecast for the Cascades of Lane County: Partly cloudy tonight, a mix of clouds and sun in the AM, becoming cloudy with a good (50%) chance of rain (0.25 in. of rain possible) Sunday afternoon, rain in the evening, rain and now showers likely (60%) late Sunday night (0.25 in. of rain possible), partly cloudy with a slight (20%) chance of rain and snow showers Monday AM, becoming mostly sunny in the afternoon, just mostly clear Monday night, mostly sunny Tuesday AM, partly cloudy in the afternoon, then mostly cloudy with a slight (20%) chance of rain and snow showers Tuesday night free air freezing level 9,000 ft. tonight, snow level 6,500 ft. Sunday, 5,500 ft. Sunday night, 4,500 ft. Monday AM, then free air freezing level 7,000 ft. Monday night and Tuesday, 5,500 ft. Tuesday night lows 34-27 warming to 30 Tuesday night highs 44-40 warming to 45 Tuesday. Mostly cloudy with a slight (20%) chance of rain and snow showers Wednesday, partly cloudy Wednesday night through Thursday night, a mix of clouds and sun Friday, partly cloudy Friday night, then a mix of clouds and sun Saturday free air freezing level 4,000 ft. Wednesday, 4,500 ft. Wednesday night, 5,500 ft. Thursday, 6,500 ft. Thursday night, 9,000 ft. Friday, 7,500 ft. Friday night, then 8,000 ft. Saturday highs 37-45 lows near 28.
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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.
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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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