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Advisories: NONE AT THIS TIME.
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An upper air trough of low pressure (“U” shape over the Pacific Northwest) has ushered in a moist marine airflow pushing many more clouds our way. A frontal system fell apart as it moved into Oregon and produced some light showers or sprinkles, the closest mainly in the South Hills for Eugene, but another one right behind it will spread more precipitation over the Pacific Northwest overnight and for your Sunday. More frontal systems will approach next week giving us the Autumn weather that comes with the season and the Autumnal Equinox which occurs at 2:05 AM PDT Thursday. I don’t know about you, but I have been seeing trees turning colors and losing their leaves for the past month which seems to indicate that Autumn-like cloud cover and low temperatures that we had for the latter part of this Summer triggered an early start to the Fall season for at least some of the trees.
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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 tonight with a slight (20%) chance of rain, mostly cloudy with a (30%) of rain Sunday AM and a slight (20%) chance in the afternoon, a slight (20%) chance of showers Sunday evening, mostly cloudy late Sunday night and Monday AM with patchy AM fog, partly cloudy Monday afternoon and Monday night with patchy fog late at night and early Tuesday AM, mostly sunny Tuesday afternoon, then partly cloudy Tuesday night lows 50-54 cooling to near 50 Tuesday night highs 76-83. Partly cloudy Wednesday and Wednesday night, then a mix of clouds and sun Thursday through Saturday with partly cloudy nights highs 85-80 lows 50-55 then back to 55 Friday night. (seasonal averages high 77 low 47)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, mostly cloudy tonight and Sunday AM, partly cloudy Sunday afternoon, mostly cloudy Sunday night and Monday AM, mostly sunny Monday afternoon, partly cloudy in the evening, mostly clear Monday night, mostly sunny Tuesday, then mostly clear Tuesday night lows 46-55 highs 78-84. Partly cloudy Wednesday through Saturday highs 85-80 lows 52-55. (seasonal averages high 78 low 51)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy tonight, cloudy Sunday AM, partly cloudy Sunday afternoon, mostly cloudy Sunday night, mostly cloudy at the shore with patchy fog and a slight (20%) chance of showers late at night and early Monday AM, partly cloudy Monday afternoon and evening, then mostly cloudy with patchy fog late Monday night and Tuesday AM, then partly cloudy Tuesday afternoon and night lows 48-53 highs near 65. Partly cloudy Wednesday and Wednesday night, then mostly cloudy Thursday through Saturday highs 66-62 lows 50-55. (seasonal averages high 65 low 50).
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Forecast for the Cascades of Lane County: Mostly cloudy tonight through Sunday evening, partly cloudy late Sunday night, a mix of clouds and with a slight (20%) chance of showers Monday AM, mostly sunny Monday afternoon, partly cloudy Monday night, mostly sunny Tuesday, then partly cloudy Tuesday night free air freezing level 10,000 ft. rising to 12,000 ft. late tonight through Sunday night, 13,000 ft. rising to 14,000 ft. Monday through Tuesday night lows 40-47 highs 64-72. Partly cloudy Wednesday AM, mostly sunny Wednesday afternoon, partly cloudy Wednesday night through Saturday AM, then mostly sunny Saturday afternoon free air freezing level 14,000 ft. Wednesday through Friday, then 15,000 ft. Friday night and Saturday highs 73-67 warming to near 75 Saturday lows near 46.
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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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