The combination of an upper level trough of low pressure (the “U” shaped dip in the yellow line) is moving in to be replace the high pressure that warmed us back up. That means it will cool things off a bit Friday, then back up again Saturday, you can see the pattern, but it should stay dry.
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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 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, mostly sunny but cooler Friday, and mostly clear Friday night, AM clouds and mostly sunny and cooler Saturday, and partly cloudy Saturday night lows 47-45-49 highs 85-80. AM clouds and sun then mostly sunny Sunday and mostly clear Sunday night high 82 low near 50. AM clouds then a mix of clouds and sun and warmer Monday through Thursday, partly cloudy Monday evening, mostly cloudy at night and Tuesday AM, and partly cloudy Tuesday night and Wednesday night highs 77-80 lows near 50. (seasonal averages high 82 low 51)
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Forecast for the Umpqua Basin including Roseburg: Clear tonight, sunny Friday, clear Friday evening then partly cloudy at night and Saturday AM, sunny and cooler in the afternoon, mostly clear in the evening, then mostly cloudy Saturday night lows 56-54 highs 88-84. AM clouds then sunny and cooler Sunday and Monday, mostly clear in the evening and mostly cloudy Sunday night highs 83-79 low 53. Mostly clear Monday evening, then mostly cloudy Monday night and Tuesday AM with a slight (20%) chance of drizzle, then mostly sunny Tuesday afternoon, partly cloudy in the evening, mostly clear at night and mostly sunny Wednesday and Thursday, mostly clear at night lows 52-55 highs 80-84. (seasonal averages high 86 low 55)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy this evening and mostly cloudy tonight, patchy coastal fog late this evening through Friday AM, patchy late night and early AM fog inland, then mostly sunny Friday afternoon low 52 high 63. Mostly clear Friday evening, mostly cloudy Friday night and Saturday morning with patchy coastal fog, then mostly sunny Saturday and Sunday, mostly cloudy at night with patchy coastal fog again lows near 50 highs 64 . Mostly cloudy with patchy areas of drizzle or light rain Monday through Tuesday highs 65 low 53. Partly cloudy Tuesday night through Thursday lows near 50 highs near 64. (seasonal averages high 67 low 53).
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Forecast for the Cascades of Lane County: Mostly clear tonight Friday night and Saturday night , mostly sunny and cooler Friday, Saturday and Sunday free air freezing level 15,000 ft. falling to 14,000 ft. Friday night and down to 13,000 ft. Sunday night lows 47-44 highs 78-70. A mix of clouds and sun Monday and Tuesday, partly cloudy Monday night and Tuesday night free air freezing level 13,000 ft. falling to 12,000 ft. Monday night and above 8,000 ft. Tuesday night highs 69 Monday, 64 Tuesday lows 40-42. Partly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday through Thursday snow level above 8,000 ft. highs 67-70 low 38.
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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.