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A high pressure ridge (“Arch” shape in the jet stream) has brought sunshine to the Pacific Northwest and is warming us up. A weak frontal system will move through Oregon today, but it won’t change the weather for very long. Yet another frontal system will approach the state Wednesday bringing back a chance of cooler Autumn weather again for the end of the week.
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Advisories: A HIGH SURF ADVISORY IS IN EFFECT FROM 5 AM TODAY UNTIL 5 AM MONDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.
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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 with a slight (20%) chance of rain this AM, mostly cloudy in the afternoon through Monday AM, then a mix of clouds and sun Monday afternoon, and partly cloudy at night highs 77-83 lows 53-55. A mix of clouds and sun Tuesday through Thursday with partly cloudy nights highs 80-74-77 lows 53-47. Mostly clear Thursday night, mostly sunny Friday, partly cloudy at night, and a mix of clouds and sun Saturday lows near 50 highs 82-75. (seasonal averages high 73 low 45)
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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with a slight (20%) chance of AM rain today,mostly cloudy this evening, partly cloudy at night and Monday AM, sunny Monday, and partly cloudy Monday night through Tuesday night highs 82-86 lows 57- 54. Partly cloudy with a slight (20%) chance of showers Wednesday AM, partly cloudy Wednesday night through Friday night, and partly cloudy Saturday AM, then mostly cloudy with a slight chance of rain Saturday afternoon highs 80-75 lows 52-55. (seasonal averages high 78 low 48)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy with a slight (20%) chance of AM showers today, mostly cloudy tonight high 67 low 56. AM clouds, sunny Monday, partly cloudy Monday night through Tuesday night, mostly cloudy Wednesday with a slight (20%) chance of AM showers, partly cloudy Wednesday afternoon through Thursday, mostly clear in the evening, partly cloudy Thursday night through Saturday morning, then mostly cloudy with a slight (20%) chance of rain Saturday highs 70-64 lows 55-50. (seasonal averages high 66 lows 49).
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Forecast for the Cascades of Lane County: Mostly cloudy with a slight (20%) chance of rain today, and partly cloudy tonight, a mix of clouds and sun Monday through Thursday, with partly cloudy nights snow level above 8,000 ft. today and free air freezing level 15,000 ft. tonight, 16,000 ft. Monday and Monday night, 15,000 ft. Tuesday falling to 13,000 ft. Wednesday and Wednesday night, back to 15,000 ft. Thursday highs 68-75-70-67-75 lows 42-44. Mostly sunny Friday, partly cloudy Friday night, and a mix of clouds and sun Saturday, and partly cloudy Friday night free air freezing level 15,000 ft. Friday, 13,000 ft. Friday night and 14.000 ft. Saturday highs 74-62 low near 45.
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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.