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An upper level low over Washington and Oregon (see “U” shape formed by the blue arrows) is increasing the onshore air flow as it moves to the East.. That means more clouds and even a chance of some light rain or drizzle along the Oregon coast. A weak cold front moved down  from the Northwest Saturday causing some minor precipitation mainly in the mountains. There is still smoke high in the atmosphere over us from Canadian fires. So far that smoke has not come down to the surface. Smoke is still collecting over the Deschutes National Forest near Sisters and could slowly move toward us if and when the offshore airflow returns pushing the smoke from East to West.

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Advisories: NONE AT THIS TIME.

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The summer Pollen Count Forecast season for the Eugene-Springfield area is over. 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 cloudy this AM, a mix of clouds and sun in the afternoon, partly cloudy in the evening, mostly cloudy tonight and Monday AM, a mix of clouds and sun in the afternoon, then partly cloudy Monday night highs 77-80 lows 54-50. A mix of clouds and sun and warmer Tuesday through Friday, and partly cloudy each night highs 82-86 lows 50-53. Mostly clear Friday night and mostly sunny Saturday low 53 high 86. (seasonal averages high 83 low 51)

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Forecast for the Umpqua Basin including, Roseburg:  Mostly cloudy with a slight (20%) chance of drizzle this AM, sunny in this afternoon, mostly clear this evening, then mostly cloudy at night and Monday morning, mostly sunny and a bit warmer Monday afternoon, becoming mostly cloudy Monday night highs 80-83 lows 60-53. AM clouds then mostly sunny Tuesday,  partly cloudy Tuesday night and Wednesday, mostly clear Wednesday night and Thursday night, mostly sunny and a bit warmer Thursday, AM clouds then sunny and warmer Friday, and partly cloudy Friday night and a bit warmer yet Saturday highs 83-92 lows holding at 55-58. (seasonal averages high 87 low 55)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Mostly cloudy with areas of drizzle this AM,  then mostly cloudy this afternoon and tonight with patchy fog and drizzle late night and Monday morning, partly cloudy and cooler Monday afternoon and evening, then mostly cloudy with patchy fog at night highs 65-60 lows 52-48. AM fog and clouds then mostly cloudy and a bit warmer Tuesday through Saturday with lingering patchy fog highs 60-64 lows near 49-54. (seasonal averages high 68 low 53).

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Forecast for the Cascades of Lane County:  Mostly cloudy with a slight (20%) chance of sprinkles or drizzle this AM,  a mix of clouds and sun today, partly cloudy tonight, and a mix of clouds and sun and a bit cooler Monday  snow level above 8,000 ft. today rising to a free air freezing level of 13,000 ft. tonight and Monday highs 73-70 lows 47- 43. Mostly cloudy Monday night with a slight (20%) chance of showers late mainly North, partly cloudy Tuesday with a slight (20%) chance of afternoon and evening showers, and mostly clear Tuesday night free air freezing level 12,000 ft. Monday night falling to a snow level above 8,000 ft. Tuesday and Tuesday night lows 44-46 high 72-69. Mostly sunny and a bit warmer Wednesday through Friday, mostly sunny and a bit cooler Saturday, and mostly clear each night free air freezing level 10,000 ft. Wednesday rising to 16,000 ft. Thursday night and Friday, and lowering to 15,000 ft. Friday night and Saturday highs 73-77 (cooling to 73 Saturday) lows 45-50.

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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.