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Advisories: NONE AT THIS TIME.
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A trough of low pressure (“U” shape shaded in grey with blue arrows) has moved across Oregon while a low off the Northern California coast (shaded area with blue arrows) is moving up and into Oregon bringing the chance of thunderstorms back to the Cascades and foothills and Southern Oregon. The weather will pretty much be perfect for the rest of the Eugene Celebration through Sunday. A new frontal system will enter the Pacific Northwest early next week returning some clouds and cooler temperatures.
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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 showers late tonight, a mix of clouds and sun in the AM, mostly sunny Sunday afternoon, mostly clear Sunday evening, cloudy Sunday night and Monday AM, mostly sunny in the afternoon, mostly clear in the evening, cloudy late Monday night and Tuesday AM, a mix of clouds and sun Tuesday afternoon, partly cloudy in the evening, then cloudy late Tuesday night lows 55-48 highs 88-70. Cloudy Wednesday AM, a mix of clouds and sun in the afternoon, mostly cloudy Wednesday night and Thursday AM, mostly sunny Thursday afternoon through Saturday with mostly clear nights highs 70-82 lows near 48. (seasonal averages high 81 low 50)
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Forecast for the Umpqua Basin including Roseburg: A slight (20%) chance of isolated thunderstorms this evening, mostly clear late tonight, partly cloudy in the AM, sunny Sunday afternoon, mostly clear in the evening, partly cloudy with patchy fog late Sunday night, mostly cloudy with patchy fog Monday AM, mostly sunny in the afternoon, partly cloudy in the evening, cloudy with patchy fog late Monday night, mostly cloudy with patchy fog Tuesday AM and Tuesday night lows 55-52 highs 90-76. Mostly cloudy with patchy AM fog Wednesday AM, then mostly sunny Wednesday afternoon, mostly cloudy Wednesday night and Thursday, mostly clear Thursday night, mostly sunny Friday and Saturday with mostly clear skies Friday night highs 77-86 lows 52-56. (seasonal averages high 83 low 54)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly clear this evening, increasing clouds to cloudy with patchy fog late tonight and Sunday AM, partly cloudy Sunday afternoon, partly cloudy in the evening then mostly cloudy inland, cloudy at the beaches, patchy fog late Sunday night through Monday AM, partly cloudy in the afternoon and evening, patchy fog late at night and early AM Monday night through Tuesday night lows near 53 highs 67-62. Patchy AM and late night fog Monday through Wednesday, mostly cloudy Wednesday night through Friday AM, then partly cloudy Friday afternoon through Saturday highs 63-67 lows near 52. (seasonal averages high 66 low 52).
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Forecast for the Cascades of Lane County: Partly cloudy with a (30%) chance of scattered thunderstorms tonight, a slight (20%) chance of isolated thunderstorms Sunday afternoon, a slight (20%) chance isolated showers in the evening, mostly clear Sunday night, mostly sunny Monday, mostly clear in the evening, mostly cloudy Monday night, a mix of clouds and sun Tuesday, partly cloudy in the evening, then cloudy Tuesday night free air freezing level 14,000 ft. tonight and Sunday, snow level above 8,000 ft. Sunday night, free air freezing level 14,000 ft. Monday, 13,000 ft. Monday night, 12,000 ft. Tuesday, then 10,000 ft. Tuesday night lows 53-43 highs 76-64. Mostly cloudy with a slight (20%) chance of rain Wednesday afternoon and evening, partly cloudy late at night and Thursday AM, mostly sunny Thursday afternoon, mostly clear Thursday evening, partly cloudy at night and Friday AM, then mostly sunny Friday afternoon and Saturday with mostly clear skies Friday night snow level above 8,000 ft. Wednesday and Wednesday night, free air freezing level 11,000 ft. Thursday, 12,000 ft. Thursday night, 13,000 ft. Friday through Saturday highs 67-74 lows 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.
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Get your local Eugene-Springfield news on-line at EugeneDailyNews.com.
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