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Advisories: A FREEZE WARNING IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 9AM MONDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FREEZE WATCH IS IN EFFECT FROM MONDAY NIGHT THROUGH TUESDAY MORNING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 6 PM MONDAY FOR THE ENTIRE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH EUGENE. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM WEDNESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
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A high pressure ridge (“Arch” shape on the jet stream) is planted offshore and the airflow will keep us in the sunshine, as long as the fog clears. So, for all of the work week we’ll see sunshine after the late night and early AM fog and/or freezing fog clear out. That also means that our air quality is suffering with the sinking air of high pressure holding on to the pollutants at the surface.
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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 with patchy fog this evening, areas of fog late tonight and Monday AM, mostly sunny in the afternoon, mostly cloudy with patchy fog in the evening, cloudy with increasing areas of fog late Monday night and Tuesday AM, mostly sunny in the afternoon, clear with patchy evening fog, then partly cloudy with increasing areas of fog late Tuesday night and Wednesday AM, partly cloudy in the afternoon and evening, then mostly cloudy with areas of fog again late Wednesday night lows 28-32 highs near 39-44. AM clouds and patchy fog then a mix of clouds and sun Thursday through Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night, then a mix of clouds and sun with a slight (20%) chance of showers Sunday highs near 46 lows near 32. (seasonal averages high 47 low 35)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, clearing with patchy fog and freezing fog late tonight and Monday AM, mostly sunny with patchy fog in the afternoon, clear in the evening, mostly cloudy with patchy fog late Monday night and Tuesday AM, mostly sunny in the afternoon, patchy evening fog, mostly cloudy with patchy fog and areas of freezing fog late Tuesday night, patchy fog and sunny Wednesday, then partly cloudy Wednesday night lows 28-32 highs 42-47. Partly cloudy with patchy fog Thursday, mostly clear Thursday night, mostly sunny with patchy fog Friday, mostly clear Friday night, partly cloudy Saturday and Saturday night, then mostly cloudy Sunday highs 43-48 cooling to near 44 Sunday lows 34-30. (seasonal averages high 48 low 37)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Clear with patchy fog and areas of freezing fog late tonight and Monday AM, sunny Monday afternoon, clear with patchy coastal fog Monday night and Tuesday AM, sunny Tuesday afternoon, mostly clear with patchy evening fog, then areas of freezing fog late Tuesday night, partly cloudy with patchy fog Wednesday and Wednesday night lows 30-36 highs 52-49. Partly cloudy with patchy fog Thursday and Thursday night, sunny with patchy fog Friday, partly cloudy Friday night, then mostly cloudy Saturday through Sunday highs 47-50 lows 34-38. (seasonal averages high 51 low 40).
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Forecast for the Cascades of Lane County: Clear tonight, sunny Monday and Tuesday with clear nights, mostly sunny Wednesday, then partly cloudy Wednesday night free air freezing level 6,500 ft. tonight, 7,000 ft. Monday, 9,000 ft. Monday night, 10,000 ft. Tuesday and Tuesday night, 9,000 ft. Wednesday, then 7,000 ft. Wednesday night lows 20-28 highs 38-44 cooling to 39 Wednesday. Mostly sunny Thursday, mostly clear Thursday night, partly cloudy Friday and Friday night, a mix of clouds and sun Saturday, partly cloudy with a slight (20%) chance of snow showers Sunday, then partly cloudy with a slight (20%) chance of rain and snow showers Sunday night free air freezing level 6,500 ft. Thursday, 7,000 ft. Thursday night and Friday, 7,500 ft. Friday night, 6,500 ft. Saturday, snow level 4,000 ft. Saturday night, then 4,500 ft. Sunday highs 36-40 lows 26-23.
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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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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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