An upper level trough of low pressure (the “U” shaped dip in the yellow line) is moving in and will cool a bit Wednesday. It will warm up later in the week into the weekend as high pressure builds in and it should stay dry. Look for another weak cold front to brush by next weekend and then waffle and get pushed back as a warm front and then move through again. Still no rain. There could be some sprinkles along the South coast tonight and the Northern coast and interior Thursday.

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Advisories:   NONE AT THIS TIME.

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The Updated Pollen Count Forecast for the Eugene-Springfield area : Trees LOW, Grass HIGH, and weeds LOW. Data from Allergy and Asthma Research Group.

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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, mostly cloudy Wednesday  AM, then mostly sunny and a bit cooler in the afternoon, and partly cloudy Wednesday night lows 47-52 highs 84-80. Mostly sunny Thursday, clear at night, sunny and warmer Friday, then mostly clear Friday night highs 80-89 lows 49-52. Mostly sunny Saturday through Tuesday with mostly clear to partly cloudy nights highs 93-83 lows 56-50. (seasonal averages high 83 low 51)

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Forecast for the Umpqua Basin including Roseburg: Mostly clear tonight,  AM clouds then mostly sunny Wednesday,  clear Wednesday night and Thursday night and sunny Friday lows 52-58 highs 85-95. Partly cloudy Friday night,  AM clouds Saturday then sunny with a slight (20%) chance of afternoon thunderstorms with a continued chance of thunderstorms and cooler Sunday and Sunday evening, then partly cloudy at night lows near 58  highs 98-89 . Partly cloudy Monday through Tuesday highs 88-85  low 55. (seasonal averages high 87 low 55)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Clear this evening then becoming cloudy tonight and Wednesday AM inland and cloudy at the shore with patchy fog and drizzle late at night and early Wednesday AM,  mostly sunny inland in the afternoon, and mostly clear Wednesday evening and mostly cloudy at night  lows 49-52 high 64. AM clouds, then mostly sunny Thursday, mostly clear in the evening, then partly cloudy at night high near 64 low 49. Partly cloudy Friday, then mostly cloudy Friday night  and Saturday highs 66-64 low near 52. Partly cloudy with patchy late night and AM fog Saturday night and Sunday, then just mostly cloudy Sunday night through Tuesday (a bit cooler Monday and Tuesday) lows 54-49 highs 67-63. (seasonal averages high 67 low 49).

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Forecast for the Cascades of Lane County:  Mostly clear tonight, then mostly sunny Wednesday, mostly clear Wednesday night, AM clouds and sun Thursday, then sunny in the afternoon and clear at night free air freezing level  13,000 ft. rising to 14,000 ft. Wednesday, back down to 13,000 ft. at night, 14,000 ft. Thursday rising to 15,000 ft. Thursday night lows 43-46-43 highs 80-76. Sunny Friday, mostly clear at night, mostly sunny Saturday and Sunday, mostly clear Saturday night and Sunday night  free air freezing level 15,000 ft. Friday rising to 16,000 ft. at night,  falling to 15,000 ft. Saturday, and rising back to 16,000 ft. Sunday night highs 84-89 cooling to 80 Sunday  lows 48-52-46. Mostly sunny Monday with just a slight (20%) chance of afternoon and evening thunderstorms, then mostly clear Monday night and a mix of clouds and sun and cooler Tuesday free air freezing level 15,000 ft. Monday and Monday night falling to 14,000 ft. Tuesday highs 77-73 low 44.

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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.