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The upper level airflow is coming from over the Pacific Ocean into the Pacific Northwest. A frontal system will be moving through tonight and on the Memorial Day Holiday itself bringing more rain and cooler temperatures. Yet another storm system will be upon us for Wednesday.
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Advisories: NONE AT THIS TIME.
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The Updated Pollen Count Forecast for the Eugene-Springfield area : Trees LOW, Grass MODERATE, and weeds ABSENT. 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 cloudy with evening rain becoming likely and rain tonight low near 50. Mostly cloudy (Memorial Day) with a periods of early morning rain, showers likely (60%) late morning, then a (20%) chance of showers in the afternoon and a slight (20%) chance at night high 65 low 47. Mostly cloudy with a slight (20%) chance of showers Tuesday, a (40%) chance of evening rain, then rain late at night high 67 low 52. Mostly cloudy with rain Wednesday, likely Wednesday night , and showers likely (60%) Thursday highs 68-62 low 55. Mostly cloudy with a (40%) chance of showers Thursday night through Friday, a good (50%) chance Friday night and Saturday, (30%) Saturday night and a slight (20%) chance of showers Sunday lows 52 highs 65.
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy rain likely (60%) this evening, rain tonight, showers likely (60%) Monday (Memorial Day) morning with a slight (20%) chance of rain in the afternoon and Monday night and Tuesday lows 54-49 highs 70-66. Cloudy with a (30%) chance of rain Tuesday evening, and rain likely (60%) late at night, rain Wednesday morning, then rain likely (60%) Wednesday afternoon through Thursday lows 54-57 highs 67-73. Mostly cloudy with a (40%) chance of rain Thursday night through Saturday lows 52-55 highs 74-76. Mostly cloudy with a slight (20%) chance of rain Saturday night and Sunday low 52 high 72 .
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain tonight, showers likely (60%) Monday (Memorial Day) morning, then a slight (20%) chance of showers at night lows 50-48 high 56. Mostly cloudy with a slight (20%) chance of showers Tuesday, rain in the evening and late Tuesday night and Wednesday morning low 52. Rain likely (60%) and breezy Wednesday afternoon through Thursday highs 60-63 low 51. Cloudy with a good (50%) chance of rain Thursday night and Friday low 52 high 63 . Mostly cloudy with a (50%) chance of rain Friday night and Saturday low 53 high 65. Mostly cloudy just a (30%) chance of rain Saturday night and Sunday low 49 high 60 .
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Forecast for the Cascades of Lane County: Mostly cloudy with evening rain likely (60%), rain late tonight and early Monday (Memorial Day), then showers in the afternoon snow level 8,000 ft. falling to 7,000 ft. Monday low 36 high 55 . Mostly cloudy with a (20%) chance of evening showers, a slight (20%) chance of showers late Monday night, a slight (20%) chance of showers Tuesday, a good (50%) chance of evening showers, then rain likely (60%) Tuesday night snow level 7,000 ft. rising to 8,000 ft. Tuesday night lows 35-38 high 60. Mostly cloudy with rain Wednesday, likely (60%) Wednesday night, and showers likely (60%) Thursday snow level near 8,000 ft. highs 62-57 low 40. Mostly cloudy with a (40%) chance of showers Thursday night and (30%) Friday through Sunday snow level holding above 8,000 ft. lows 36-42 highs 55-60.
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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.