An  upper level High Pressure ridge (the “arch” shaped portion of the yellow lines) is slowly moving away from us. A trough of low pressure is slidding down from the Gulf of Alaska and it will move eastward just to the north of us. That will increase the onshore airflow and cool us off some more . A cold front will drop down from the northwest mid to late in the week and it looks like it will have little or no effect.

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Advisories:   NON AT THIS TIME.

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The Updated Pollen Count Forecast for the Eugene-Springfield area : Trees LOW, Grass VERY 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: Mostly clear tonight, AM clouds and a mix of clouds and sun and cooler Monday, partly cloudy in the evening, mostly cloudy Monday night, AM clouds and a mix of clouds and sun Tuesday,  and partly cloudy Tuesday night lows 54-50 highs 77-81. Mostly sunny Wednesday through Sunday and mostly clear at night highs 83-87 lows 49-52. (seasonal averages high 81 low 51)

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Forecast for the Umpqua Basin including Roseburg:  Clear this evening, back to mostly cloudy  tonight low 62. AM clouds then mostly sunny Monday through Wednesday, and mostly clear at night highs varying from 80-88 lows near 52-54. Clear nights and sunny Thursday through Sunday highs 89-82 lows 56-52. (seasonal averages high 85 low 54)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with more patchy coastal fog late tonight, clear this evening and cloudy tonight inland, patchy AM fog and light drizzle then mostly cloudy at the shore Monday and AM clouds then mostly sunny inland low 56 highs 65. AM clouds then mostly sunny Tuesday, mostly cloudy Tuesday night and Wednesday AM, sunny Wednesday afternoon and mostly clear at night  highs 66-67 lows 50-53. Mostly sunny to sunny Thursday through Sunday, and clear each night highs varying from 62-66 lows near 50. (seasonal averages high 66 low 52).

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Forecast for the Cascades of Lane County:  Partly cloudy tonight, a mix of clouds and sun Monday, and partly cloudy and cooler Monday night, a mix of clouds and sun Tuesday, and partly cloudy at night  free air freezing level rising to 15,000 ft. falling to 14,000 ft. late tonight, 15,000 ft. Monday and Monday night, and back down to 14,000 ft. Tuesday and Tuesday night lows 53-42 highs 69-72. Mostly sunny Wednesday through Sunday, and mostly clear at night free air freezing level  15,000 ft. falling to 13,000 ft. Thursday, rising to 14,000 ft. Friday through Sunday highs 74-79 lows 46-48.

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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.