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Upper level low pressure (“U” shape offshore), that will follow the one that’s leaving to the East, is going to be controlling our weather for the near future keeping clouds, cooler temperatures, and showers over the Pacific Northwest. There will be a series of frontal systems including this frontal system (position shown on Wednesday) pushing through Oregon.
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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: Mostly cloudy with a slight (20%) chance of thunderstorms this evening, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible, more in thunderstorms), mostly cloudy and cooler Monday with a slight (20%) chance of showers (under 0.10 in. of rain possible) , just mostly cloudy Monday night, mostly cloudy with a slight (20%) chance of rain Tuesday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Tuesday night, a slight (20%) chance of showers Wednesday, then mostly cloudy Wednesday night lows 52-42 highs near 66. A mix of clouds and sun Thursday and Friday, partly cloudy Thursday night, mostly cloudy Friday night through Saturday evening, then partly cloudy Saturday night and Sunday highs near 70 lows 42-48. (seasonal averages high 71 low 45)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy a slight (20%) chance of scattered thunderstorms this evening, a slight (20%) chance of showers late tonight through Monday night, mostly cloudy with a slight (20%) chance of rain Tuesday AM, a slight (20%) chance of showers in the afternoon, partly cloudy in the evening, mostly cloudy Tuesday night with a slight (20%) chance of showers, mostly cloudy Wednesday AM, partly cloudy with a slight (20%) chance of showers Wednesday afternoon, partly cloudy in the evening, mostly cloudy Wednesday night lows 56-47 highs 72-69. Becoming partly cloudy partly cloudy Thursday through Friday, just mostly cloudy Friday night and Saturday, then partly cloudy Saturday night and Sunday highs 75-79 cooling to near 70 Sunday lows 50-55. (seasonal averages high 75 low 49)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of isolated coastal showers this evening and isolated inland showers this evening and tonight, a slight (20%) chance of showers Monday, a slight (20%) chance of showers Monday night, mostly cloudy with a slight (20%) chance of rain Tuesday AM, a slight (20%) chance of showers Tuesday afternoon, a slight (20%) chance of coastal showers Tuesday night, mostly cloudy Wednesday AM, partly cloudy with a slight (20%) chance of showers Wednesday afternoon and evening, just mostly cloudy Wednesday night lows 54-47 highs 60-56. Partly cloudy Thursday through Friday AM, mostly cloudy Friday afternoon through Saturday night, then just partly cloudy Sunday highs 63-58 lows near 49. (seasonal averages high 63 low 49).
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Forecast for the Cascades of Lane County: Mostly cloudy with thunderstorms likely (60%) this evening , a (40%) chance of showers late tonight (0.25 in. of rain possible, more in thunderstorms), cloudy with a good (50%) chance of showers and cooler Monday (0.10 in. of rain possible), a (40%) chance of showers Monday evening, colder at night (under 0.10 in. of rain possible), a mix of clouds and sun Tuesday with a slight (20%) chance of rain, partly cloudy Tuesday evening, mostly cloudy with a (30%) chance of showers Tuesday night, a mix of clouds and sun with a (30%) chance of showers Wednesday, then a slight (20%) chance of showers Wednesday night snow level 8,000 ft. tonight through Tuesday, 7,000 ft. Tuesday night, 6,000 ft. Wednesday, then 7,000 ft. Wednesday night lows 43-33 highs 50-58 cooling to near 50 Wednesday. A mix of clouds and sun Thursday, Friday, and Saturday, partly cloudy Thursday night, partly cloudy Friday evening, mostly cloudy Friday night, mostly cloudy in the evening, then partly cloudy Saturday night and Sunday with a slight (20%) chance of showers free air freezing level 9,000 ft. Thursday and Thursday night, 10,000 ft. Friday through Saturday, then above 8,000 ft. Saturday night and Sunday highs 56-62 lows 32-40.
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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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