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Advisories: NONE AT THIS TIME.
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An upper air trough of low pressure (“U” shape on the brown line) brought us enough marine air to cool our high temperatures down to more comfortable levels. With high pressure (“Arch” shape on brown line) over southern Canada and the low offshore we will warm up for the weekend. A weak cold front will slide by mainly north of us next Tuesday not having any effect on our weather. Another high pressure ridge will build up next week for another round of increasing temperatures.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly clear tonight, sunny and warmer Saturday, clear Saturday night, sunny and a bit warmer Sunday, clear Sunday night, sunny and a bit cooler Monday, then clear Monday night lows 48-55 highs 90-93 cooling to 87 Monday. Sunny Tuesday through Friday with clear nights highs 86-92 lows 54-50 warming to 55 Thursday night. (seasonal averages high 84 low 52)
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Forecast for the Umpqua Basin including Roseburg: Clear tonight, sunny and warmer Saturday, clear Saturday night, sunny and hot Sunday, mostly clear Sunday night, mostly sunny and a bit cooler Monday, then mostly clear Monday night lows 55-58 cooling to 55 Monday night highs 95-96 cooling to near 90 Monday. Mostly sunny and warmer Tuesday through Thursday with mostly clear nights, then sunny and cooler Friday highs 92-96 lows 54-58. (seasonal averages high 86 low 56)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly clear this evening, partly cloudy with patchy coastal fog tonight and Saturday AM, sunny Saturday afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late Saturday night, mostly cloudy Sunday AM with patchy coastal fog, sunny Sunday afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late Sunday night and Monday AM, partly cloudy in the afternoon and Monday night lows near 55 highs 66-63. Partly cloudy Tuesday through Friday AM, then sunny Friday afternoon highs 65-68 lows near 55. (seasonal averages high 65 low 53).
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Forecast for the Cascades of Lane County: Clear tonight, sunny and warmer Saturday and Sunday with clear nights, sunny and a bit cooler Monday, then clear Monday night free air freezing level 15,000 ft. tonight and Saturday, 16,000 ft. Saturday night, then 15,000 ft. Sunday through Monday night lows 44-50 cooling to 46 Monday night highs 80-85 cooling to 78 Monday. Sunny Tuesday through Thursday with clear nights, then mostly sunny Friday free air freezing level 15,000 ft. Tuesday through Friday highs 75-84 cooling to near 80 Friday lows 47-50 cooling to near 47 Thursday night.
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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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