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Advisories: NONE AT THIS TIME.
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An upper level trough of low pressure (“U” shape) has moved through the Pacific Northwest, but a series of ripples in that flow will be followed by an even stronger low that will slide along the coast. That will keep us alternating between periods of clouds and cooler temperatures, and even some light rain or drizzle, then back to some more sunshine and warming temperatures. A frontal system has pushed through the Pacific Northwest spreading showers throughout. Another frontal system approaches the coast Friday (position shown is Saturday) that will bring a chance of showers Saturday with clearing and warming behind it for the rest of the weekend into next week.
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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 through Friday evening, mostly cloudy with a (30%) chance of showers late Friday night (under 0.10 in. of rain possible), mostly cloudy Saturday AM, a mix of clouds and sun with a good (50%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy late Saturday night through Sunday evening, then mostly cloudy Sunday night lows 47-55 cooling to 50 Sunday night highs 78-70 warming to 74 Sunday. A mix of clouds and sun Monday, then partly cloudy Monday night through Thursday highs 76-72 warming to 78 by Thursday lows near 50. (seasonal averages high 82 low 51)
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The Pollen forecast for the Eugene/Springfield Area is for trees and weeds to be low, and Grass to be moderste. (Provided by Allergy and Asthma Research Group)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, mostly cloudy tonight and Friday AM, mostly sunny Friday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers Friday night, a (30%) chance of showers Saturday, a slight (20%) chance of evening showers, just mostly cloudy late Saturday night through Sunday night lows 53-59 cooling back to 52 Sunday night highs 80-72 warming back up to near 80 Sunday. Mostly cloudy with a slight (20%) chance of showers Monday and Monday night, mostly cloudy Tuesday AM, partly cloudy with a slight (20%) chance of showers Tuesday afternoon, partly cloudy with a slight (20%) chance of showers and drizzle Tuesday night and Wednesday, mostly clear in the evening, then partly cloudy with a slight (20%) chance of showers late Wednesday night through Thursday AM, then just partly cloudy Thursday afternoon lows 56-52 highs 81-86. (seasonal averages high 85 low 55)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy this evening, mostly cloudy Friday AM, partly cloudy Friday afternoon, mostly cloudy with a good (50%) chance of showers Friday night, a (30%) chance of showers Saturday, a slight (20%) chance of showers in the evening, mostly cloudy with patchy fog late Saturday night and Sunday AM, just mostly cloudy Sunday afternoon, then mostly cloudy with a slight (20%) chance of showers Sunday night lows 52-57 cooling to near 50 Sunday night highs near 65. Mostly cloudy with a slight (20%) chance of showers Monday through Tuesday, mostly cloudy with a slight (20%) chance of showers and drizzle Tuesday night and Wednesday, a slight (20%) chance of showers Wednesday night and Thursday AM, then partly cloudy Thursday afternoon highs near 65 lows near 53. (seasonal averages high 67 low 53).
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Forecast for the Cascades of Lane County: Mostly cloudy tonight, partly cloudy Friday and Friday evening, mostly cloudy with a (40%) chance of showers late Friday night and Saturday AM, partly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon and evening, partly cloudy with a slight (20%) chance of showers late Saturday night and Sunday, then partly cloudy Sunday night free air freezing level 9,000 ft. tonight, 10,000 ft. Friday, snow level above 8,000 ft. Friday night through Sunday, then a free air freezing level of 11,000 ft. Sunday night lows 40-42 highs 69-57 warming to 65 Sunday. Partly cloudy with a slight (20%) chance of rain Monday, then just partly cloudy Monday night through Thursday snow level above 8,000 ft. Monday, free air freezing level 12,000 ft. rising to 13,000 ft. Monday night through Thursday highs 68-58 warming to near 70 Thursday lows 42-45.
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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.
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Get your local Eugene /Springfield news on-line at EugeneDailyNews.com.
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